20050315DSM Annual Report.pdf

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An iDACORP Companv
(8)
Demand-Side Management
Annual Report
March 2005
To request additional copies
Please write or call
Darlene Nemnich
Idaho Power Company
O. Box 70
Boise, I D 83707
[phone]
Pri nted on recycled paper
TABLE OF CONTENTS
EXEC UTIVE SU MMARY
........................ .................................. .....
....... .............. ............ 3
DEMAND SIDE MANAGEMENT TERMS...................................... ................. ................ 5
DEMAN D RESPONSE PROG RAMS...................................... ...... ........ ................ .......... 7
AIR CONDITIONING CYCLING PILOT (AiC COOL COMFORT)................................................
IRRIGATION PEAK CLIPPING PILOT (IRRIGATION PEAK REWARDS)
......................................
RESIDENTIAL CUSTOMER PROGRAMS ...................................................................
ENERGY STARCB) HOMES NORTHWEST
........................................................................
REBATE ADVANTAGE....................................... .............................................................
ENERGY HOUSE CALLS ................................................................................................
Low-INCOME WEATHERIZATION ASSISTANCE (LIWA) .....................................................
OREGON RESIDENTIAL WEATHERIZATION (SCHEDULE 78) ...............................................
COMMERCIAL CUSTOMER PROGRAMS ..................................................................
BUILDING EFFICIENCY (COMMERCIAL CONSTRUCTION ENERGY EFFICIENCY PROGRAM) .... 19
OREGON COMMERCIAL AUDIT (SCHEDULE 82) ............................................................... 20
INDUSTRIAL CUSTOMER PROGRAMS .....................................................................
INDUSTRIAL EFFICIENCY PROGRAM ...............................................................................
DISTRIBUTION EFFICIENCY INITIATIVE PILOT ...................................................................
IRRIGATION CUSTOMER PROGRAMS...................................................................
IRRIGATION EFFICIENCY PROGRAM.
.................... ... ................... ....... .......... ....... ".' ..... ....
SMALL PROJECTS AND EDUCATION FUNDS .........................................................
SUMMARY ...................................................................................................................
SMALL PROJECT FUNDS ...............................................................................................
EDUCATION FUNDS ......................................................................................................
TRAI N NG P ROG RAMS ...... ........
....................................... ................................. .........
NORTHWEST BUILDING OPERATOR TRAINING
.................................................................
MARKET TRANSFORMATION........................................ ................................. ........... 33
NORTHWEST ENERGY EFFICIENCY ALLIANCE................................................................. 33
ENERGY EFFICIENCY ADVISORY GROUP ACTIVITIES (EEAG) .............................
ENERGY EFFICIENCY ADVISORY GROUP RECOMMENDATIONS.......................................... 35
REG U LA TORY APPEN DIX
........................................................................... ...............
DA T A AP PEN D IX.....................................................
.......... ....................... ...................
FUNDING FROM ENERGY EFFICIENCY RIDER AND BPA.................................................... 43
EXPENDITURES FOR ENERGY EFFICIENCY IN 2004.......................................................... 44
PROGRAM ACTIVITY-CURRENT DSM 2004 ..................................................................
PROGRAM ACTIVITY-HISTORICAL ................................................................................
Demand Response, Residential Efficiency.................................................. 46
LIWA ..................................................................................................................
Commercial , Industrial , Irrigation , Education ........................................... 48
FINANCIAL FACTORS ....................................................................................................
In an ongoing commitment to customers , Idaho Power develops and implements
programs to help in managing energy demand. These Demand Side Management (DSM)
programs help participants to save money and allow Idaho Power to more efficiently
manage resources. Programs are designed to reduce overall energy demand, to manage
peak demand loads, and to reduce the need to buy energy from the open market.
Idaho Power relies on the input of the Energy Efficiency Advisory Group (EEAG) to
provide customer and public interest review of DSM programs. Formed in 2002 and
meeting quarterly, the EEAG consists of 18 members spanning a cross-section of
customers including residential , industrial, commercial, irrigation , the elderly, low income
state agencies, the environment, the IPUC , and representatives from Idaho Power.
In 2004 , Demand Side Management programs at Idaho Power continued to grow and to
show steady improvement in customer satisfaction. Two pilot programs were conducted
to impact peak demand; the Irrigation Peak Clipping Program, and a second year of the
Air Conditioning Cycling Program. Participation increased in existing programs including
new home and manufactured home efficiency programs, Industrial Commercial and
Irrigation Programs. Participation in the Low-Income Weatherization Program (LlWA) also
grew in 2004 as funding increased by about $1 million per year. Furthermore, Idaho
Power s customer satisfaction surveys show steady improvement in the percent of
customers whose needs are met with energy conservation.
In 2004 Idaho Power realized energy savings of
507 MWh and peak savings of 6.83 MW from its energy
efficiency and demand response programs. Additionally,
savings were realized from market transformation efforts
which are reported by the Northwest Energy Efficiency
Alliance (Alliance) and summarized later in this document.
In 2004, Demand Side
Programs saved
23,507 MWh of energy
and 6.83 MW of peak
energy.
During the course of the year, Idaho Power spent over
$4.2 million promoting energy efficiency, including payments of $1.million to the
Alliance , $1.million in spending for programs funded through the Idaho Energy
Efficiency Rider (Rider), and $0.95 million in spending on Idaho Power Programs funded
by the Bonneville Power Administration s Conservation and Renewable Discount Program
(BPA C&RD). Funding and expenditure details are shown in the Data Appendix.
Summary: DSM Costs* and Energy Savings 2004
Pro ram Cate 0
Programs funded through the Rider
Programs funded through SPA
Northwest Energy Efficiency Alliance (Alliance)
Low-Income Weatherization Assistance (LlWA)
Oregon programs
Other DSM Costs and Administration
Program
Spending
$ 1 222 670
$ 949 898
$ 1 244 790
$ 509 133$ 1 057
$ 276 900Total $ 4,204,448
* Further details shown in Data Appendix - "Expenditures for Energy Efficiency in 2004" Table.
SavingsMWh Peak MW806 6.
808
593
300
23,507 MWh 83 MW
The 2004 Integrated Resource Plan (IRP) was published and filed with Idaho Power s twostate regulatory commissions. The plan calls for savings from demand side programs in
the 2004-2013 horizon totaling 124 MWof peak capacity and 48 average MW of energy.Six programs in 2005 will contribute to these savings. Some programs will be expanded
some pilots developed into full programs , and other programs will be newly developed.
During the fall of 2004, applications were filed with the (IPUC) for full implementation ofthe AlC Cycling Program and Irrigation Peak Clipping Programs (now called Irrigation
Peak Rewards). In addition, Idaho Power filed an application
with the IPUC to increase the Energy Efficiency Rider for
funding to implement the energy efficiency levels called for inthe Integrated Resource Plan and to continue our
participation in the Alliance. Idaho Power and otherinterested groups participated in a series of workshops in
Idaho to examine utility disincentives to DSM.
In the future, DSM
programs are
scheduled to save
48 MWa from
2004-2013
Additionally, Idaho Power has added four new full-time staff and has continued to develop
internal systems to operate more efficiently.
The year 2004 marked the final year in an agreement to fund the Northwest EnergyEfficiency Alliance for five years. The Alliance s efforts in the Pacific Northwest impactIdaho Power s customers by providing behind-the-scenes market changes as well
providing leverage to Idaho Power local programs. Idaho Power, with valuable input fromthe EEAG analyzed the benefits of continued funding and , on September 30 , 2004signed an agreement to continue support of the Alliance through 2009. Idaho Powerworked closely with the Alliance and will use the research and infrastructure developed by
the Alliance in local programs.
In 2004, Idaho Power was in its fourth year of a five-year agreement with the (BPAC&RD). Idaho Power directs the BPA C&RD funds to programs that serve lower-incomeresidential customers.
This Annual Demand-Side Management Report has been prepared in response to
Order No. 29419 from IPUC. This document reports the energy efficiency and demand
response achieved by Idaho Power programs and activities in 2004. The Appendixcontained in this document reports current and historical program data, and a separateAppendix document contains the full report of the AlC Cycling Pilot as requested by theIPUC in Order No. 29207.
AlC
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.EMii tiS 19EMiNAGEMEN TTE RMS
Air Conditioning
Alliance Northwest Energy Efficiency Alliance
BPA
C&RD
CFL
CSR
DLC
DSM
EEAG
HVAC
lED
IPUC
IRP
LIWA
Bonneville Power Administration
Conservation and Renewable Discount Program
- Compact Fluorescent Lamp
Customer Service Representative
Direct Load Control
- Demand-Side Management
Energy Efficiency Advisory Group
Heating Ventilation and Air Conditioning
Idaho Energy Division
Idaho Public Utilities Commission
Integrated Resource Plan
- Low-ncome Weatherization Assistance
NWBOA Northwest Building Operators Association
OPUC
PTCS
Rider
- Oregon Public Utilities Commission
Performance Tested Comfort Systems
Energy Efficiency Rider
Program Spending Costs other than administrative costs associated with a
particular program. Administrative and miscellaneous costs
are provided as a line item.
Total Utility Costs ID Power monetary costs associated with a particular program.
Used in Appendix tables and program summaries.
Total Resource Costs Total Utility Costs combined with the incremental monetary
expense incurred by customer.
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~.N.II...)RESPO..N..S..E ..R.OG..O.MS
AIR CONDITIONING CYCLING PILOT (AIC COOL COMFORT)
DESCRIPTION
In March 2003 , the Idaho Public Utilities Commission (IPUC) issued Order No. 29207
approving a request by Idaho Power to conduct a two-year Air Conditioning Cycling
Pilot Program (AIC Pilot Program). This voluntary program for residential customers
enabled Idaho Power to directly address summer peaking requirements by reducing
the air conditioning load of program participants.
The primary goal of the AIC Pilot Program was to assess the effectiveness of air
conditioning control on reducing peak load. Specific 2004 objectives were:
Assess effect of air conditioning control on reducing household peak demand
(kW) and energy use (kWh)
Refine methodology for measuring and evaluating effects
Integrate AIC Pilot Program processes into Idaho Power operations
Test equipment
Several design changes were made during the second year of the Air Conditioning
Pilot Program to attain these goals. Specific changes included the following:
~ Amended contract with Cannon Technologies to purchase 200 Direct Load
Control (DLC) switches and test switch installation, performance and
maintenance compare to that of thermostats.
Developed a direct mail application targeted to a random sample of customers
in Boise and Meridian in order to analyze response rates.
Developed an improved customer database to track installations , equipment
and maintenance.
Installed 35 demand meters and 78 data loggers in randomly selected
households to improve data collection and evaluation.
Designed a Voice Response Unit system and trained 10 company Customer
Service Representatives (CSRs) to assist with program-related telephone
. .
inqUIries.
Tested two cycling schedules (50010 and 67010) to determine differences in
demand and temperature gain within the households.
Approximately 120 hours of cycling occurred during 30 test days in June, July, and
Aug ust.
RESULTS
Peak Demand Effects: At 50010 cycling across all temperatures , the programproduced a substantive and measurable effect of approximately .83 kW reduction per
participant in air conditioning load during cycling periods, with a larger increase of16 kW reduction per participant during cycling when the outside temperature was
950 or greater.
Energy Effects: The reduction in air conditioning load during cycling results
participants shifting usage to non-cycling periods. Overall , this results in a slight net
decrease in energy usage of 0.8 kWh during a typical cycling day.
Comfort: About 90010 of participants experienced little or no discomfort from cycling,
and the overall average home temperature increase was between 1 to 2 degrees over
the four-hour cycling period.
Customer Satisfaction: A survey taken after the cycling season indicated high levels
of customer satisfaction on measures including information provided , cooling comfort
customer service and overall program management.
NEXT STEPS
On November 15, 2004 Idaho Power filed for approval to implement a system-wide
Air Conditioning Cycling Program in Idaho. This application was approved onFebruary 4, 2005 through IPUC Order No. 29702.
The 2005 program implementation is underway. Approximately 2000 participants will
be recruited in Ada and Canyon counties and the city of Emmett. Within the Emmettarea, the program will utilize Power Line Carrier communications through the
Advanced Meter Reading (AMR) system to control switches, while within Ada and
Canyon counties the program will use switches activated by a paging system and
dispatched through a web-based interface.
Further program integration is planned within Idaho Power and contractors will be
hired to provide the equipment and manage an end-to-end installation process.
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RE'S..P.DN.SE,P..RD..RaM,
IRRIGATION PEAK CLIPPING PILOT (IRRIGATION PEAK REWARDS)
DESCRIPTION
The 2002 and 2004 Integrated Resource Plans (IRP) for Idaho Power identified peak
resource deficiencies in upcoming years. As a result, Idaho Power determined it
would target demand-side resources to reduce system peak demand. Since the
summer irrigation loads are a major component of the summer peak demand , the
Irrigation Peak Clipping Pilot Program was developed. The purpose of this program
was to test the potential reduction of summer peak loads by interrupting service to
participating irrigation customers. Through the use of electronic timers on the
customers' irrigation equipment , service was cycled off during peak weekday hours
from 4 p.m. to 8 p.m. (The program was designed to interrupt irrigation service during
the 2004 summer irrigation season beginning on June 1 2004 and ending on
August 31 2004.
Participants in the program were given the choice of three interruption options: either
one twq, or three weekdays per week for the months of June, July, and August.
Electronic timers were programmed to interrupt electrical service to the specified
irrigation equipment for the hours of 4 p.m. to 8 p.m. Mountain Daylight Time (MDT)
on the regularly scheduled weekdays. The following interruption options were
available to the customers along with the corresponding incentive amounts:
One weekday per week, 4 p.m. to 8 p.
. Two weekdays per week, 4 p.m. to 8 p.
Three weekdays per week, 4 p.m. to 8 p.
$1.75 per kW Demand
$1.88 per kW Demand
$2.00 per kW Demand
The actual incentive amount to customers was calculated for each metered service
point by multiplying the billing demand for the months of June, July, and August by the
incentive corresponding to the interruption option the customer selected.
RESULTS
Participation: Out of the 310 eligible customers , 55 customers-or 190/0-
chose to participate in the program. Of the 1 100 eligible service points
148 service points-or 13.5OIo-were enrolled in the program.
Peak Demand Effects: The program produces substantive and measurable
impacts on peak demand. The total demand reduction associated with the
program averaged 4 345 kW from 4-8 p.m. over the course of the summer.
The maximum reduction occurred during the last half of June, when an
estimated 5,597 kW in demand reduction was achieved. The minimum
reduction of 2 833 kWoccurred in late August.
Energy Effects: The program achieved significant load shifting from peak to
off-peak periods. That is, the program was successful in reducing demand
without any statistically significant change in overall energy consumption.
Customer Satisfaction: Over 77010 of the participants were satisfied with the
program and approximately 64010 of the participants reported that the
incentive amount was what initially persuaded them to participate.
Moreover, nearly 77010 of the participants said they probably or definitely
would participate in the program again.
NEXT STEPS
On November 1 2004, Idaho Power filed to implement a system-wide Irrigation Peak
Rewards Program in Idaho with the Idaho Public Utilities Commission. This filing was
approved on December 22, 2004 through Order No. 29665. The company plans to
implement this program in 2005 with a peak savings goal of 30 MW.
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IIGGUSI10MERPROG.-MS
ENERGY STAR(B) HOMES NORTHWEST
DESCRIPTION
The ENERGY STARCB) Homes Northwest Program is a regionally coordinated initiative
supported in partnership by the Northwest Energy Efficiency Alliance, Idaho Power
and the Idaho Energy Division to support the construction of single-family homes that
are 30010 more energy efficient than those built to standard Idaho residential code.
Idaho Power s primary objective with this program is to reduce future peak summer
demand by increasing the efficiency of residential building envelope construction
practices and air conditioner usage. The company is providing consumer marketing,
$750/per home-builder incentive, and program management to the partnership.
The following are among the activities Idaho Power completed in 2004:
Developed programs logos and collateral material
Placed 9 print advertisements in Boise and Nampa real estate publications
Sponsored 7 Parade Home entries in Ada and Canyon counties
Sent out 6 press releases about the program
Scheduled several radio and television interviews to promote program and
events
Sent out 430 "Homebuyer s Kits" to customers
Placed bill stuffers in March and December power bills
Organized major public relations event for the first 100010 Energy Star
subdivision in Idaho
Marketed builder training workshops in Boise and Pocatello
NEXT STEPS
Plans are underway to expand the program in Twin Falls and Pocatello in 2005 , and a
comprehensive communications plan addresses future program roll-outs to coincide
with local Parade Home events in those communities.
Idaho Power also intends to formalize an agreement with the Idaho Energy Division
assist their efforts in managing workload and home certification.
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UCIJStrSMERRILOGUMS
REBATE ADVANTAGE
DESCRIPTION
In 2003, Idaho Power launched a program to encourage manufactured home buyers
to purchase energy-efficient electrically heated Super Good Cents/ENERGY STARCB)homes. The program, formerly called Energy Efficient Manufactured Home
Incentives , was renamed Rebate Advantage at the start of 2004. The goal of the
program is to help buyers purchase Super Good Cents/EN ERGY ST ARCB) homes and
to encourage salespeople to discuss energy efficiency with potential home buyers.
Customers who purchase a Super Good Cents/ENERGY STARCB) home and site it in
Idaho Power s service territory are eligible for a $300 incentive. In addition , the
salesperson receives a $75 incentive. The BPA's C&RD program funds this effort.
Idaho Power relies on the Northwest Energy Efficiency Manufactured Homes Program
(NEEM) for the specifications and quality control associated with the program. NEEMis a consortium of manufacturers and state energy offices in the Northwest.
addition to specifications and quality control NEEM tracks the production and
performance of Super Good Cents/ENERGY STARCB) homes.
RESULTS
The program performed steadily throughout the year. A majority of the homes were
sited in more rural areas throughout the service area. The number of dealers and
salespeople participating in the program are as follows:
Towns with Homes Sited
Dealers
Salespeople
NEXT STEPS
In 2005, Idaho Power will develop a marketing plan to highlight the ENERGY STARCB)
qualified home. The new ENERGY STARCB) specifications, which were anticipated in
2004, are expected to be completed in early 2005. These new specifications will
make it easier for manufacturers to build ENERGY STARCB)qualified homes for
customers in our service area. An increase in the incentives for ENERGY STARCB)
qualified homes will also be considered.
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DJIAcIJrCUS'I'OME RRROG. RAMS
ENERGY HOUSE CALLS
DESCRIPTION
Idaho Power launched a pilot program in October 2002 to provide duct sealing and
additional efficiency services to customers living in electrically heated manufactured
homes. Upon successful completion of the pilot program, Idaho Power rolled the
program out to the entire service area. At that time the program was renamed Energy
House Calls for Manufactured Homes (formerly known as Manufactured Home
Energy Checkups). The program is funded by the BPA through C&RD dollars.
The services are free to customers and include the following:
Duct testing and sealing according to Performance Tested Comfort System
(PTCS) specifications endorsed by the BPA and Idaho Power
3 CFL bulbs
2 furnace filters along with replacement instructions
Hot water temperature test
Energy efficiency materials
The program is managed under contract by Ecos Consulting in partnership with
Delta- T, both of whom have experience and expertise in managing duct sealing
programs. Ecos and Delta- T rely on local weatherization and energy services
providers to market and perform the services. Quality assurance is provided by a
third-party in compliance with the BPA's C&RD guidelines and Idaho Power.
RESULTS
Work in 2004 progressed at a pace significantly higher than initially predicted due to
the productivity of the local technicians and the speed at which they were trained and
certified in the program.
The need for duct sealing continues to be apparent. In the homes tested and sealed
to the BPA and Idaho Power standards, an average of 62% reduction of air leakage
was achieved. Of all homes tested , less than 100/0 met the BPA and Idaho Power
standards without sealing.
Energy House Calls in 2004
Table 2.
Measures & Participants
Furnace Filters
Number
964
Savings
kWh
Homes Tested & Sealed
Homes Tested Only
Homes Not Able to Seal
Total Homes
497
114
1 ,708 035,792 kWh
CFL bulbs 667 313 991 kWh
Total 349 783 kWh
NEXT STEPS
The program will continue to operate in its current form throughout the service area in
2005. Particular focus will be placed on colder-climate areas in an effort to reach
customers who would receive greater benefit from these services. The program
contractors , Ecos Consulting and Delta-, are working to complete 1 000 additional
homes added to their contract in the fall of 2004, bringing the program total to nearly
000 homes.
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~titI..lSTBM ..E..
....
...PROG..RAM.
Low-INCOME WEATHERIZATION ASSISTANCE (LIWA)
DESCRIPTION
Since 1989, Low-Income Weatherization Assistance has been a public-purpose
program to make energy services more affordable to low-income customers. Idaho
Power provides grants to local non-profit agencies participating in state-run
weatherization programs in Idaho and Oregon to supplement federal funding of
weatherization projects. The agencies recruit candidates and qualify households for
the program using the state eligibility requirements. The state programs are
administered in Idaho by the Department of Health and Welfare, Bureau of Benefit
Program Operations, and in Oregon by the Department of Human Resources, State
Housing & Community Services Department.
For all Agency weatherization jobs , the dwellings must be electrically heated and
provide cost-effective electricity savings. In Idaho, the program allows health and
safety measures costing up to 15 percent of the total job, in addition to weatherization
measures.
In Order No. 29505 issued in Case No. IPC-03-, the Commission directed Idaho
Power to increase annual LlWA funding by $1 000 000 for three years. Idaho Power
hired a program manager to manage the program with the Community Action
Partnership (CAP) Agencies and to assist them in completing additional
weatherization jobs. Changes were implemented in Idaho to align Idaho Power
program with the Department of Energy (DOE) weatherization program. Changes
included a consistent 1.0 savings to investment ratio 10010 administrative fee, and
changes in invoice billing procedures in order to simplify the process for CAP
agencies. Idaho Power also increased the amount of funding available for each job
from 50010 to a maximum of 85010 with a minimum funding contribution of 15010 from the
DOE. The program also changed from a fuel blind program to reimbursing for
electrically heated homes only. Funds to be utilized by non-profit organizations were
increased from $15 000 to $36 250. Additionally, an allowance was made for the
remaining funds at the end of the contract year to be rolled over into the following
year s contract.
RESU L TS
LIWA activity by agency and state is shown in Table 3. Included in the 309 jobs
completed in Idaho were 40 electrically heated homes that were weatherized using
$49 886 provided through the C&RD from the BPA to save an estimated
125 919 kWh. The remaining 269 non-C&RD funded jobs in Idaho saved
271 677 kWh. In Oregon , 17 weatherization jobs were completed and are estimated
to save 28 436 kWh.
The non-profit pool fund for weatherization of buildings occupied by tax-exempt
organizations provided $16 284 to help four Idaho non profit organizations in 2004.
Jointly, the estimated savings per year for all four organizations is 103 956 kWh.
NEXT STEPS
A LlWA database is in the process of being developed in order for agencies to
transmit job invoices for payment electronically. A LIWA satisfaction survey is being
distributed to a minimum of 10% of customers receiving weatherization services.
Inspections by Idaho Power personnel will continue on 5010 of all weatherization jobs.
In addition , Idaho Power plans to implement in Oregon the program changes adopted
in Idaho upon approval by the Oregon Public Utility Commission.
Low-Income Weatherization Assistance in 2004
Table 3.
Weather-
ization Spending Program
Agency Jobs Vendor BPA funds Spending
Canyon County Organization on Aging 150 945 601 164 546
Eastern Idaho Special Services Agency 439 600 039
EI-Ada Community Action Agency 142 569 159 164 728
Central Community Action Agency 109 776 786 117 562
Eastern Idaho Community Action Agency 651 740 391
Idaho Nonprofit Pool Fund 284 284
Idaho Subtotal 309 495,664 * $49,886 545,550
Malheur Council on Aging (Oregon)13,469 * $13,469
Total 326 509,133 * $49,886 559,019
Misc. program expenditures & admin 524
Total UtilitY Cost 578.543
* Correlated to Expenditures Table in Appendix, line item LlWA Idaho.
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iEJ~I!CIlSTOMERARQGRAMS.
OREGON RESIDENTIAL WEATHERIZATION (SCHEDULE 78)
DESCRIPTION
This statutory program requires the annual notification of all residential customers in
Oregon to inform them how to obtain energy audits and financing for energy
conservation measures. To qualify for an Idaho Power audit or financing, customers
must have electric space heat. The program offers loans at 5010 interest or cash
payments of 25% of the cost-effective portion of recommended measures. Loans for
measures that are not cost-effective are also available at a higher interest rate , but
the maximum total loan amount is $5 000 per dwelling, and loans are subject to credit
approval. The maximum cash payment is the installed cost of the measures excluding
labor by the owner, up to $1 000 per dwelling.
RESULTS
Program costs shown above were from 4 jobs completed in 2003 and paid in 2004.
2004, there were 34 inquiries regarding residential audits; 17 audits were performed
with jobs to be performed in 2005. Idaho Power will be providing a payment for one
customer that completed a weatherization job on a triplex in early 2005.
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~eCU5TGMISR.P.ROG.RA.
BUILDING EFFICIENCY (COMMERCIAL CONSTRUCTION ENERGY EFFICIENCY PROGRAM)
DESCRIPTION
Idaho Power is committed to expanding the Rider energy efficiency services to the
commercial market sector. As a starting point, Idaho Power has created a new
program focused on commercial construction (new buildings, expansions, or major
renovations). Input and recommendations were solicited from the Energy Efficiency
Advisory Group during 2004.
The target for this program will be Schedule 7 and 9 customers in Idaho. The primary
focus of this new program will be on lighting and air conditioning efficiency measures
that will have the greatest impact on summer peak.
The program development activities started in mid-2004 with the assistance of an
outside consultant to help define initial direction. Full-time staff was hired
December. The current plan is to have this program ready for customer participation
in the second quarter of 2005.
Beginning in October 2004, Idaho Power partnered with the Northwest Energy
Efficiency Alliance and the University of Idaho to open the Integrated Design Lab in
downtown Boise. This facility will provide day-lighting design modeling and other
energy efficiency advice to local developers and design professionals.
RESULTS
In addition to the opening the Integrated Design Lab, results in 2004 include obtaining
internal approval to proceed with this program and hiring staff to manage the program
development and implementation.
NEXT STEPS
In 2005, the company will finalize program details, market the program to commercial
developers and to the design community (architects and engineers), and manage the
incentive application process.
The goals for 2005 are energy savings of 389 000 kWh/year and a peak demand
reduction of 100 kW.
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aSirDMEftRROGlmMS
OREGON COMMERCIAL AUDIT (SCHEDULE 82)
DESCRIPTION
This statutory program requires that all commercial customers in Oregon be notified
every year that information about energy saving operations and maintenance
measures for commercial buildings is available and that commercial energy audit
services can be provided , normally at no charge. Customers using more than
000 kWh per month may receive a more detailed audit but may be required to pay a
portion of the costs.
RESU L TS
In 2004 , there were 18 inquiries about commercial audits, and 10 audits were
performed. Employees conducted seven audits, and EnerTech Services carried out
three audits on behalf of the company at a cost of $1 200, paid and reflected in
2005 accounting. Idaho Power does not monitor audit recommendation
implementation and does not estimate energy savings for this Program.
In addition to the annual notification , the company is considering offering our Oregon
customers a small business energy saving booklet in 2005.
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. 1i!t!.JlI.t...C.USI/QM.E...R.ROG..IlAM.
INDUSTRIAL EFFICIENCY PROGRAM
DESCRIPTION
The primary purpose of this program is to acquire peak kW and kWh savings from
projects at industrial customer sites and to assist industrial customers in reducing
energy costs. The program is marketed to approximately 300 qualifying customers.
The program provides training and education to customers, auditing services for
project identification and evaluation , and financial incentives to help with project
implementation.
Customers are required to identify a project applicable to their own facilities , provide
sufficient information to Idaho Power to establish a basis for a viable conservation
project and complete an application. The customer also must allow for on-site power
monitoring where practical and enter into an incentive agreement. Idaho Power will
then review submittals to determine kWh and kW savings and whether the proposal
meets other program requirements. It may take up to two years for an industrial
custome~ to select a project, budget for it, assemble the project information, allow
Idaho Power to analyze it, execute an agreement and implement the project.
RESULTS
There were four projects completed in 2004 which had a combined savings of
252 533 kWh/yr and total incentive payments of $96 292. Three additional projects
are in the installation phase with signed contracts in place. Five additional projects
are nearly to the contract signing phase.
Idaho Power increased activity in audits and education opportunities in 2004. A total
of 15 walk-through energy audits were conducted by company personnel. The
businesses participating in these free audits ranged from the food processing sector
to the manufacturing sector. In addition two audits were performed for a food
processing company by a energy services company. The Industrial Assessment
Center from the University of Utah also provided audit services for three food
processing businesses. In the training arena , Idaho Power sponsored one
Compressed Air Challenge workshop, and one Electric Motor Management workshop
for our customers. The company also co-sponsored one Pumping System
Assessment Training workshop as well in 2004.
NEXT STEPS
The program is being significantly revised for 2005 following input from Industrial
customer representatives, IPUC staff, and company personnel. Audit funding is being
increased and the rules simplified , incentive amounts are being increased and the
calculations simplified , and funding for training and education is being increased.
addition, beginning on June 1 2005 (pending IPUC approval) Schedule 19 and
special contract customers will have the ability to participate in a new self-directed
option. Customers who choose the self-directed option will be able to use up to 100010
of the funds that they contribute through the Energy Efficiency Rider for projects at
their facilities.
The current program goals included in the IRP are for 9 427 000 kWh/yr in energy
savings from the industrial sector in 2005. Customers have indicated wide
acceptance of the program design and are working toward providing the necessary
information to have a viable project.
u. .
.... . .. ... .. .. ... .. . .. .
RI~l:llirCU STOME .RiPROGRAMS
DISTRIBUTION EFFICIENCY INITIATIVE PILOT
DESCRIPTION
The Distribution Efficiency Initiative (DEI) encourages the operation of the distribution
system at a lower average voltage, when possible , to reduce consumption of various
end-use loads. This research project developed by the Alliance, involves multiple
utilities and technologies to evaluate the cost effectiveness of different approaches.
This project will also assess the potential effects of this effort by quantifying the
achievable energy savings and demand reduction. This approach also has a direct
demand response component.
During 2004, Idaho Power planned to assist the Alliance in the research and
development phase of this pilot. The research and development phase was to consist
of an extensive load research and benefit study. Idaho Power s contribution to this
phase, expected to occur in 2004, would have included:
Assisting in developing customer selections and making customer
contacts.
Installation of home voltage regulator units.
Installation of meters.
Through this pilot , the Alliance and Idaho Power expect to determine the energy
savings and demand reduction potential through improved voltage regulation
providing lower average voltages while maintaining or improving service quality.
Because of manufacturing problems of the home voltage regulators , this program was
delayed by about 12 months. It was determined that these voltage regulators needed
Underwriters' Laboratories (UL) approval and the added time was necessary to obtain
the approval. The DEI will continue the research and development phase in 2005.
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. ..... .. .. ... ...... . - ... . .
CJNi.CU..5:;rO.M..E.R....PRO.G..RA.M .5
IRRIGATION EFFICIENCY PROGRAM
DESCRIPTION
The Irrigation Efficiency program is an incentive program for agricultural irrigation
customers to install more efficient irrigation systems. The program is available to both
existing and new customers. Modified systems are reviewed by Idaho Power
Agriculture Representatives to determine savings. The amount of the incentive to the
customer is calculated by multiplying the kWh savings by $.10 or the kW reduced by
$200, whichever is greater. The total incentive is limited to a cap of $5 000 or no
more than 25010 of the total costs for existing systems and $3 000 or no more than
10010 of the total costs for a new system.
The program provides customers with information and education through annual
workshops across our service territory. Idaho Power works with University of Idaho
Extension System , the Natural Resource Conservation Service and the Idaho Energy
Department (lED) to provide these workshops to customers. Idaho Power Agriculture
Representatives provide analysis , energy audits and expert advice to our irrigation
customers. To be a direct participant in this program the customer must identify a
project on their system, provide sufficient information to Idaho Power to establish a
basis for a viable conservation project and complete an application. The customer
also needs to enter into an incentive agreement with Idaho Power.
This program has been promoted to customers through a direct mailing. In addition
Idaho Power has promoted the program with advertisements in agricultural
publications and at various agricultural shows across our service territory. Also, Idaho
Power Agriculture Representatives periodically meet with agricultural irrigation
equipment dealers and promote the program to them.
RESULTS
Thirty-three payments to customers were made in 2004. This is an energy efficiency
program for irrigation customers; therefore, the savings from this program will occur
during the summer. Most projects that will make an irrigation system more efficient
will also reduce the peak demand of the irrigation system. Idaho Power calculates
energy savings for this program by looking at each project specifically. The systems
can range from very big to very small. Savings are calculated at each metered
service point.
NEXT STEPS
An expanded version of this program was selected by the 2004 IRP. It is anticipated
that this program will be modified in the third quarter of 2005 to increase participation
and savings.
... . . . . .. .. ... .. .-.. .. .. ... -.. .. .. . ... .
QDECmS~NIiEDUCATIO.NFaNDS
SUMMARY
In order to be able to respond to research requests, educational opportunities and
worthy small projects that are not eligible under other programs, Idaho Power, with
support of the EEAG , set aside two funds: the Small Project Fund and the EducationFund. Each was initially funded with 20/0 of the Rider funding which results in
approximately $54 000 available for each fund. In 2004, $17 578 was spent from the
Small Project fund and $5 834 from the Education Fund. Following is a list of the
specific items funded in 2004.
SMALL PROJECT FUNDS
Building Commissioning on Tumble Time Gymnastics Academy
As part of an innovative new building design/construction process , Idaho Power
agreed to co-fund the building commissioning process for Tumble Time Gymnastics inBoise. This commissioning ensures that the building lighting, heating, and air
conditioning systems were installed and will be operated as designed. This is a
smaller facility with complex lighting controls integrated in with their day lighting
design. The actual savings from the commissioning exercise will be estimated in the
final commissioning reports.
Total Cost: $6 500 (out of a 000 total commissioning expense)Sector: Commercial
Foothills Environmental Education Center
Idaho Power contributed $5 000 and project consultation to improve the energy
efficiency of the new Foothills Environmental Education Facility, located in Boise
Hulls Gulch Reserve. The funding was used for the installation of a day lighting
building feature, a clerestory, and other energy efficiency measures. Idaho Power
coordinated design consultation from the Northwest Energy Efficiency s BetterBricks
program to assist in heating and cooling enhancements and lighting decisions. Idaho
Power also facilitated the installation of a geothermal heat pump, donated in large
part, by Water Furnace. In addition to $5 000 paid from Energy Efficiency Rider
funds Idaho Power donated solar panels for a future rooftop system and IdaCorp
donated a fuel cell. The fuel cell technology demonstration will be the first of its kind
in a public facility in Boise.
Total Cost: $5 000Sector: Commercial
Indirect Evaporative Beta test
Idaho Power joined with the Northwest Energy Efficiency Alliance to beta test a new
indirect evaporative air conditioner from Desert Cool-air. Funding was requested to
perform an engineering study on a potential site in Boise. However, it was not
possible to install the unit in the fall of 2004 because of manufacturing difficulties.
Idaho Power is planning to continue this study in 2005.
Total Cost: $381Sector: Commercial
New Head Start Building
Idaho Power contributed $2 698 to the new Head Start building in Garden City. This
money is provided to offset the costs of installing a high efficient air conditioner that
will reduce summer usage by about 8 kW. Other innovative features of this building
include natural ventilation, day lighting, hydronic floor heat and the use of sustainable
building materials.
Total Cost: $2 698Sector: Commercial
EDUCATION FUNDS
Compressed Air Challenge Workshop
In conjunction with the Northwest Energy Efficiency Alliance, Idaho Power sponsored
a Compressed Air Challenge Workshop held in Boise on May 25 , 2004. Thirteen
attended this one-day workshop which provided customers with information on how to
improve their compressed air system performance and lower their energy use. Idaho
Power provided a $100 scholarship to any Idaho Power customer who wished to
attend, while the Alliance provided a 2-for-1 registration incentive for any company
sending more than one attendee.
Total Cost: $800Sector: Commercial and Industrial
USGBC Conference sponsor
Idaho Power was one of several sponsors of a US Green Building Council Idaho
chapter kick-off conference on August 24 , 2004 held in Boise. The conference was
attended by over 150 people interested in the Green Building/LEED concepts.
Total Cost: $250Sector: Commercial
One-Five Envinta Energy Diagnostic
One-Five Envinta Diagnostics is a survey of executive management
corporations to evaluate the climate for successful energy management.
Idaho Power paid for one One-Five diagnostic.
Total Cost: $2 400Sector: Industrial
at large
In 2004
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.. .. .. .. . . ....
T_INING eIiGGRAMS
NORTHWEST BUILDING OPERATOR TRAINING
DESCRIPTION
Idaho Power, in association with the Idaho Energy Division (lED) and the Northwest
Building Operators Association (NWBOA), continues to provide energy efficiency
training to building operators from public and private schools , universities, and
colleges within Idaho Power s service territory. NWBOA offers two levels of building
operator training that ranges from basic principles to advanced techniques in energy
efficient building operation. Level I training covers energy conservation techniques
HVAC and Air Systems , introduces automatic controls fundamentals and covers
energy efficient lighting fundamentals. Level II training covers energy efficient
operation of HV AC systems at an advanced level in addition to energy management
strategies and conservation methods. Building operators must hold a Levell
certification , or take a challenge test, in order to enroll in the Level II certification
course.
RESULTS
In 2004, Idaho Power sponsored Level II training for 26 Idaho school building
operators. All of the 26 training attendees completed the course and received
certification. Twelve of the 26 building operators actually attended training
December 2003; however, the associated training costs were not paid until
February 2004. Idaho Power quantifies DSM program participants in the year that the
related participation costs are paid by the company.
The company paid for registration fees of $550, lodging and meals for each attendee.
The participating school districts were required to cover any additional costs
associated with attending the training. The total utility cost of the training in 2004 was
$43 969, which was funded through the Rider.
The Northwest Energy Efficiency Alliance estimates annual energy savings of .5 kWh
per square foot of space managed by a certified building operator. Based on the
Alliance estimate , and the assumption that each attendee has impact on about 50 000
square feet of building space, the average 2004 attendee will save approximately
000 kWh annually for a combined annual energy savings of 650 000 kWh.
addition to the energy savings resulting in bill reductions , the school districts are
expected to receive additional benefits from the training in the form of increased
comfort in the heating and cooling months. Idaho Power expects that this training will
continue to provide a high level of customer satisfaction among this customer
segment while providing cost-effective energy savings.
. .. ... . ..
ETTbNSfOJlMATION
NORTHWEST ENERGY EFFICIENCY ALLIANCE
Idaho Power accomplishes market transformation programs in its service territory
being a member of the Northwest Energy Efficiency Alliance (Alliance) and working to
coordinate Alliance activities in Idaho. The Alliance is a regional group whose mission
is to catalyze the Northwest marketplace to embrace energy-efficient products and
services.
In 2004, Idaho Power concluded the fifth year of a five-year funding agreement with
the Northwest Energy Efficiency Alliance. The Board of Directors of the Alliance
concluded that there was still cost-effective market transformation work to be done in
the region and , based upon the effectiveness of the Alliance to capture this resource
for the region , agreed to request support from all of the funders and other interested
parties to continue in operation for another five years.
In order to evaluate whether Idaho Power should continue funding the Alliance, Idaho
Power worked with the Energy Efficiency Advisory Group to look at the cost-
effectiveness of the energy efficiency savings in the Idaho Power service territory
resulting from Alliance efforts. Idaho Power evaluated the cost of funding the Alliance
with the benefit of the energy savings coupled with the benefit of lowered
administrative costs resulting from the Alliance s support. The overall analysis showed
the Alliance is a cost-effective resource. Idaho Power management recommended
continued funding of the Alliance and the Energy Efficiency Advisory Group (EEAG)
also generally supported continued funding. Therefore , Idaho Power entered into a
five-year funding agreement with the Alliance for 2005-2009. Continued funding of
the Alliance by Idaho Power is contingent upon receiving favorable rate treatment by
the Idaho Public Utilities Commission. Idaho Power has proposed future funding of
the Alliance be included in the Idaho Energy Efficiency Rider. Idaho Power will be
working with the Oregon PUC on funding the Alliance during the next five years.
In 2004, Idaho Power paid $1 244 790 to the Alliance on a system basis. Idaho
share of the payments was $1 188 774 (95.5010) and Oregon s was $56 016 (4.5010).
These amounts do not include other costs to participate in the Alliance such as
employees' time and travel that were absorbed by the company in its general
operating expenses.
In Idaho, funding for Idaho Power participation in the Alliance was authorized
through 2004 by Order No. 28333 in Case No. I PC-99-13. The Oregon Public Utility
Commission has also approved the company s expenditures for the Alliance for 2004.
Preliminary estimates reported by the Alliance indicate that Idaho Power s share of
regional market transformation MWh savings for 2004 is 15 593 which is 1.78 MWa.
Idaho Power relies on the Alliance to report the energy savings and other benefits of
the Alliance s regional portfolio of initiatives. Highlights of the Alliance s activities in
Idaho in 2004 include:
Idaho Power is partnering with the Alliance and the Idaho Energy Division to
operate the ENERGY STARCB) Homes Northwest program. Idaho was one of
three "quick start" or pilot areas in the Pacific Northwest with this program.
The Alliance provided the primary support for the establishment of an
Integrated Design Lab in Boise that opened October, 2004.
The BetterBricks advisors provided multiple trainings in the Idaho Power
service territory and organized an effort to explore how High Performance
School construction may develop in Idaho.
The breadth of the Alliance portfolio can be found at www.nwalliance.orq
-. . .. ... .... ... . .. . . ,",p .
. ~cJ:~~JI;Jr;$(I;I3~fi.
The Energy Efficiency Advisory Group was formed in May 2002 to provide input on
formulating, implementing and evaluating energy efficiency and demand reduction
programs , which are funded by the Energy Efficiency Rider. The EEAG consists of
about 18 members across Idaho Power service territory and the Northwest.
Members span a cross-section of customers including residential , industrial
commercial , irrigation , the elderly, low income , state agencies, the environment , the
IPUC, and representatives from Idaho Power.
In 2004, the Energy Efficiency Advisory Group met January 14, April 14 , July 14 , and
October 20. In the meetings, Idaho Power provided a status of the Idaho Demand
Side Management (DSM) Rider funding and expenses, provided updates on on-going
programs and projects, requested recommendations on new program proposals and
provided information to the group on DSM issues.
One new member was added to the group in 2004 from the Twin Falls area. This
person was selected in order to maintain representation from customers and groups
across our service territory. Meeting minutes and other meeting materials are
provided to all EEAG members, including Idaho Public Utilities Commission (IPUC)
staff, and are available upon request.
There were several larger issues reviewed by the EEAG in 2004. These include the
renewal of Idaho Power funding of the Northwest Energy Efficiency Alliance for the
next funding cycle, 2005-2009; the selection of six major DSM programs in the
2004 Integrated Resource Plan , and the subsequent funding increase proposal for
this higher level of DSM expenditures through a Rider increase.
ENERGY EFFICIENCY ADVISORY GROUP RECOMMENDATIONS
Following is a review of the direction provided to Idaho Power by EEAG for major
program or research expenditures and general policy or operational issues.
IRRIGATION PEAK CLIPPING PILOT PROGRAM (PEAK REWARDS)......................
Idaho Power presented a proposal to the EEAG during the January meeting to
conduct a irrigation peak clipping pilot program during the summer of 2004. The pilot
would reduce summer demand by installing timer switches on customer irrigation
facilities that would automatically turn equipment off during prescribed hours of the
week. The EEAG had the following guidance:
There were several different suggestions for how to structure hours of
operation. Some members suggested increasing the hours of clipping to more
that four per day; others were more cautious and wanted to stay with four
hours per day.
Idaho Power implemented the program with four-hour interruption period
per day.
~ A suggestion was made to provide a tiered incentive to the number of hours
interrupted.
Idaho Power implemented tiered incentive structure where the customer
could get higher incentive when selecting to interrupt two or three days
week instead of one.
There was a suggestion to allow the farmer to select the number of hours
interrupted.
Idaho Power did not provide complete flexibility; instead as a way to keep
the program administratively manageable, the company offered three
options per service point.
Many suggestions centered on providing education to farmers.
Idaho Power mailed individual packets with tailored offerings to potential
customers, described the programs during workshops and shows, and also
provided one-on-one explanations for customers.
Several members suggested that the company implement a full-scale program
instead of a pilot in 2004.
In order to determine the cost-effectiveness of the program and the best
implementation practices, Idaho Power chose to conduct pilot in 2004 in
combination with rigorous evaluation. Due to the 2004 pilot success, the
peak clipping pilot expanded into full scale program in 2005.
There was a suggestion to put some burden on participants to bear the cost of
opting out of the program before the season was over.
Idaho Power instituted $100 opt-out fee based on this recommendation.
EEAG expressed a general consensus to move ahead with this pilot program.
In late spring, Idaho Power solicited EEAG input during a conference call discussing
early low participation rates. During the summer, Idaho Power conducted a pilot
program and the pilot results were presented to EEAG during the October meeting.
PEAK DEMAND REDUCTION ASSESSMENT STUDY
..............................................
During the January EEAG meeting, Quantum Consulting, a consultant to Idaho
Power, presented findings of the Peak Demand Reduction Assessment study. This
study estimated the DSM peak reduction potential in the residential and commercial
sectors in the Idaho Power service territory. Idaho Power used this information as
DSM option inputs to the 2004 Integrated Resource Plan (IRP).
During the April EEAG meeting, Idaho Power proposed that this study be
expanded to include an energy efficiency assessment in the commercial and
residential sectors as well as the peak demand assessment. The group
supported proceeding with the expanded study. The final report of the
expanded study was presented to the EEAG during the October meeting.
Idaho Power contracted with Quantum Consulting to expand the study.
COMMERCIAL SECTOR UMBRELLA PROGRAM
....................................................
During the April meeting, Idaho Power proposed an overall Commercial sector
umbrella effort addressing both new and existing customers. The proposal included
technical and financial assistance as well as efficiency information and targeted
demonstration efforts. It was discussed that the IRP was , at that time, analyzing new
and existing commercial DSM options. This umbrella effort could be expanded or
reduced depending upon funding. Several suggestions were made by the EEAG:
~ A suggestion was made that commissioning and retro-commissioning be
evaluated and included in the program.
Idaho Power will assess these measures in the final program design.
~ A few members suggested exploring shared staffing with other energy
efficiency entities in the state.
Idaho Power has hired one full-time staff for this program and will work
closely with other state entities to leverage efficiencies in program
implementation.
It was recommended that incentives be provided only for measures exceeding
the existing commercial code.
Idaho Power will use, at minimum, the existing commercial code as a
baseline for determining measure savings.
Another suggestion was to consider including investment grade audits as a
part of the program.
Idaho Power will assess whether to include audits in final program design.
The group generally agreed to go ahead with the program as proposed to be
expanded if chosen by the I RP.
The 2004 IRP selected the new commercial option for implementation, and Idaho
Power will be launching that program in the first half of 2005. The existing
construction commercial program was not selected in the 2004 IRP and will be re-
evaluated at a later time.
RENEWAL OF NORTHWEST ENERGY EFFICIENCY ALLIANCE.................................
During the July meeting, Idaho Power presented a cost-effective analysis of the
Northwest Energy Efficiency Alliance using 2003 costs and benefits along with other
information on Alliance activities. With the EEAG endorsement, Idaho Power
proposed to renew funding for the Alliance for the next five-year funding cycle. All
members were asked to support the following statement:
By endorsing NEEA (the Alliance), you are stating that you believe NEEA provides
value to IPCo s customers and you are willing to support funding necessary for IPCo
continued participation in NEEA.
After a long discussion, eight of the 12 available EEAG members were willing to agree
with the above statement. Four members needed more information. Idaho Power
sent more detailed information to those members. Subsequently, 10 members
endorsed continued funding, one member endorsed funding in part, and one member
decided to remain neutral.
AIR CONDITIONING CYCLING PILOT...............................................................
During the October EEAG meeting, Idaho Power presented preliminary findings of the
2004 AIC cycling pilot and indicated plans to file a full program with the IPUC.
Although full plans were not available at the time, the following suggestion was
received:
Idaho Power should work with builders in the future to add a switch during
construction of new homes.
At this time, Idaho Power is focusing on existing customers for this program
but will examine this suggestion in the future.
Idaho Power filed an application with the IPUC and plans full implementation of this
program in 2005.
Low INCOME WEATHERIZATION (LIWA) INCREASE.......................................
The Idaho Public Utilities Commission (IPUC) Order No. 29505 , issued May 25 , 2004
in Case No. IPC-03-, directed Idaho Power to increase funding of the Low
Income Weatherization Assistance program (LlWA) by $1 000 000 , increasing the
funding from approximately $212 000 to $1 212 000 per year. Costs associated with
LIWA are recovered through base rates and are not funded by the Rider.
Idaho Power presented EEAG with an update on changes made to the LIWA program
as a result of discussions with CAP agencies and the impact of funding increases of
the LIWA program during the July meeting.
INDUSTRIAL PROGRAM MODIFICATIONS (SCHEDULE 19)
.................................
In Order No. 29505, the IPUC directed Idaho Power to work with Schedule 19
customers to develop a proposal for a DSM program that allows Schedule 19
customers to determine appropriate energy conservation improvements to their own
facilities and receive matching funds from their contributions to Energy Efficiency
Rider program to install the improvements. Idaho Power convened a sub-set of
EEAG members, along with other industrial customers and representatives , including
IPUC staff to work in designing a program for the Schedule 19 customers.
Using the Industrial Efficiency Program as a base to start, Idaho Power received the
following recommendations:
Simplify the incentive qualification process.
Idaho Power eliminated two of the four criteria in the process in order to
create more easily understood qualifying process while still maintaining
desired controls.
Eliminate the one-year payback criteria.
Upon review of the actual payback levels of recent participants as well
participants in previous industrial programs, Idaho Power eliminated the two-
year payback criteria for trial period of one year. At the end of this period
Idaho Power will determine if the payback criteria needs to be reinstated to
reduce free riders.
Increase education opportunities.
Idaho Power increased the focus and budget for workshops and information
venues.
Offer audits.
Idaho Power added two audit features to the program.
Offer self-direction of funds.
Idaho Power created an option for customers to self-direct their funds and
requested commission approval of this option in its filing, requesting an
increase in Rider funding (Case No. IPC-O4-29).
These changes to the Industrial Efficiency Program are contingent upon receiving
increase Rider funding. Idaho Power is implementing this program as part of the
2004 IRP.
IDAHO DSM RIDER INCREASE PROPOSAL...
... .......... ... ...... ....... ....... .... ...........
Idaho Power discussed the plans and rational for proposing an increase in the Energy
Efficiency Rider with the EEAG at both the July and October meeting. The Rider
increase is necessary to implement the level of DSM selected in the 2004 RP and to
fund continued participation in the Northwest Energy Efficiency Alliance.
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. .. .... ... . . .. . .. . . ... .
.IIiEGIJI.:1\11DRVARPENDIX
This report satisfies the reporting requirements set out in IPUC Order No. 29419
dated January 14 , 2004. This Order combines the two previous reporting
requirements: the annual Conservation Plan (Order No. 22299) and the annual
DSM Plan (Order No. 29026).
Also included is information to respond to the reporting requirements under
Order No. 29702 (AIC Cycling Program) and Order No. 29505 (Low Income
Weatherization Assistance Program).
This page left blank intentionally.
Energy Efficiency Rider and BPA Accounts
2004
Beginning Balance January 2004 (carry over)
Funding + Interest 2004
Subtotal
$ 3 273 891
$ 2 687 340
$ 5 961 231
End of 2004 Balance
222 670)
$ 4,738,561
Expenditures - Idaho Rider Programs
Beginning Balance January 2004 (carry over)
Funding + Interest 2004
Subtotal
$ 653 139
$ 552 724
$ 1 205 863
Expenditures - BPA Conservation & Renewable Discount (C&RD)
End of 2004 Balance
949
255,965
Expenditures for Energy Efficiency in 2004
Program
ram Cate ory endin
Idaho Tariff Rider
Air Conditioning Cycling Pilot 273 973
Irrigation Peak Clipping 319,424
ENERGY STAR Homes Northwest 129 825
Commercial Building Efficiency Program 821
Air Care+ Pilot
Industrial Efficiency Program 187 473 **
Irrigation Efficiency Program , 188
School Building Operator Training 969
Small ProjecU Education Funds 449
EEAG Meetings 448
DSM Analysis & Accounting and Administration 138 249
Misc. Expenditures 779
Subtotal 222 670
BPA Conservation & Renewable Discount (C&RD)
Rebate Advantage (Energy Efficient Manufactured Home Incentive)946
Energy House Calls (Manufactured Home Energy Check-Ups)724 556
BPA Supplemental LlWA and Administration 409
Other C&RD Administration 103 987
Subtotal 949 898
Northwest Energy Efficiency Alliance
Idaho 1 188 774 ***
Oregon 016
Subtotal 1 ,244 790
Low Income Weatherization Assistance (LlWA)
LlWA - Idaho 495 664
LlWA - Oregon 13,469
Subtotal 509 133
Oregon Programs
Oregon Residential Weatherization (Schedule 78)057
Oregon Commercial Audits (Schedule 82)
Subtotal 057
Other DSM Costs and Administration
Subtotal 276 900
Total DSM Expenditures 204,448
* Program spending does not include administrative costs of existing Idaho Povver personnel and may differ from the
Total Utility Cost in the Data Appendix; hovvever, administrative costs are included in line items and thus included in
the Total DSM Expenditures.
** Includes payments for projects completed in 2004, but paid in 2005
*** Reflects a January 2005 update in the spending for ID and Oregon in 2004.
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Financial Factors for Demand-Side Management
13;48208
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Present Value Factor (PVF) for years = Adjustment Factor x (1 - ((1 + Rate) A -n)) + Rate
Real Discount Rate = ((1 + Nominal Rate) + (1 + Escalation Rate)) -
Nominal Adjustment Factor = (1 + Nominal Rate) A Nominal Timing Factor
Escalation Adjustment Factor = (1 + Escalation Rate) A Escalation Timing Factor
Real Adjustment Factor = Nominal Adjustment Factor + Escalation Adjustment Factor
For timing factors, use 0 for end of period (ordinary annuity), 1 for beginning of period (annuity due), and 0.5 for midpoint.
Updated February 2004
This page left blank intentionally.
N S U L T l G" L L C
LOAD REDUCTION ANALYSIS OF THE
2004 Air Conditioning Cycling Pilot Program
Final Report
Prepared for
Idaho Power Company
December 27 2004
Summit Blue Consulting
Boulder, Colorado
Phone [phone]
CONTENTS
Executive Summary
.......................................... ................... ...... .........
.............. ......... E-
Introduction
Background ....................................................................................................... 1-
Objectives of the Assignment......
...... .......... ....... .......... .........
................ .... ..... 1-
Load Reduction Analysis
Load Impacts..........
....... ... .......... .................. ................ ......... ...... .....
.................. 2-
Net kWh Impacts ...............................................................................................
Effect on Internal Termperature .............................................................. 2-
Conclusions and Recommendations ...................................................... 2-
Summit Blue Consulting 2004 Idaho Power Evaluation Final Report
EXECUTIVE SUMMARY
On March 17 2003 , the Idaho Public Utility Commission approved Idaho Power Company
(IPCo ' s) request to conduct the Program to test potential summer peak load reduction over two
summer seasons, 2003 and 2004. This report presents the results of the load reduction analysis of
IPCO's Air Conditioning Cycling Pilot Program (the "Program ) for the summer of 2004.
Similar to Summit Blue Consulting s (SBC's) analysis of the 2003 season, this analysis used
statistical modeling approaches that related metered electricity usage to weather conditions and
the cycling event. Several models were developed which investigated:
What effect did cycling have on reducing and/or shifting load?
Does AlC cycling reduce overall kWh, or simply shift usage to non-cycling hours? And
thus, what is the net effect on energy?
Does AlC cycling affect the internal temperature of participant's houses?
The models used in this load reduction analysis of the Pilot Program have shown the following:
The Program does produce substantive and measurable effect on AlC load during cycling
periods:
When the outside temperature exceeded 950, 67% cycling produced a savings of
1.32 kW for switches and 1.26 kW for thermostat participants. 50% cycling
produced 1.16 kW for switches and 0.86 kW savings for thermostat participants.
When the outside temperature was between 900 and 950 67% cycling produced a
savings of 0.89 kW for switches and 0.92 kW for thermostat participants. 500/0
cycling produced savings of 0.81 kW for switches and 0.77 kW savings for
thermostat participants
This reduction in AlC load during cycling results in participants shifting AlC usage to
non-cycling periods. Overall, this results in a slight net decrease in kWh usage of 0.
kWh during a typical cycling day.
Cycling does increase the internal temperature of the homes, particularly in the last hour
of a cycling period. However, this effect is relatively small, averaging less than 20
Based on the results of this analysis, the analysis of the 2003 program, and SBC's previous
experience with similar AlC cycling programs throughout the country, we have developed the
following list of recommendations:
Using AlC run-time loggers are a viable and cost-effective alternative to whole premise
and end-use demand meters. However, some end-use meters are necessary to calibrate
percentage on data from the loggers to kW demand.
Summit Blue Consulting 20041PCO AlC Pilot Draft Final Report
Efforts should be made to ensure the performance of the programmable thermostats. This
analysis found thermostat customers who were not controlled when they should have
been, controlled when they should not have been , early termination of the cycling event
(3 hours instead of 4 hours), and delayed starts during control periods. None of this
behavior was found in the participants with switches. When these problematic cases
where eliminated from the analysis, the thermostat participants had similar kW impacts
as participants with switches.
A 67% cycling scheme results in a significant decrease in kW savings, while the
aggregate effect on the temperature of the house is only 0.270 higher relative to 500/0
cycling. Therefore, IPCo should be comfortable with using this higher cycling rate when
the need arises.
Summit Blue Consulting 2004 IPCO AlC Pilot Draft Final Report
INTRODUCTION
This report presents the results of the load reduction
analysis of Idaho Power Company s (IPCo s) Air
Conditioning Cycling Pilot Program (the
Program ) for the summer of 2004.
1 Background on
1 .2 Objectives of the Assignment
In this chapter, Section 1.1 contains a brief
overview of the Program; Section 1.2 presents the
objectives of this evaluation.
Background
On March 17 , 2003, the Idaho Public Utility Commission approved IPCo s request to conduct
the Program to test potential summer peak load reduction over two summer seasons: 2003 and
2004. Summit Blue Consulting (SBC) analyzed the 2003 program in 2003. This report presents
the impact assessment of the 2004 cooling season.
During the summer of 2004, there were a total of over 100 hours of cycling from June to
Augustl Exhibit 1-1 presents the date and time of these cycling events. In 9 of these events, the
participants were cycled for 670/0 during a given half-hour (i.e., 20 minutes off during each half-
hour of the control period). On the remaining 21 control days, the units were cycled for 500/0
during a given half-hour (i.e., 15 minutes in each half-hour period).
1 There were several short term (-::::2 hours) cycling events during June 1st and 2nd, which were used to set and
test the system. These events were not included in this analysis.
Summit Blue Consulting 20041PCO AlC Pilot Draft Final Report
Exhibit 1-1: Summer 2004 Cycling Events
Date Cycling Start Duration Cycling
Time (MDT)(hours)
July 2 16:00 50%
June 3 15:00 50%
June 7 15:00 50%
June 8 15:00 50%
June 9 14:00 50%
June 22 15:00 50%
June 23 15:00 50%
June 24 15:00 67%
June 28 15:00 50%
June 30 14:00 50%
July 2 14:00 50%
July 6 15:00 50%
July 8 15:00 50%
July 12 15:00 67%
July 14 15:00 67%
July 16 15:00 50%
July 20 15:00 50%
July 22 15:00 67%
July 27 15:00 50%
July 28 15:00 67%
August 2 15:00 50%
August 4 15:00 67%
August 6 15:00 50%
August 10 15:00 67%
August 12 15:00 50%
August 17 15:00 50%
August 18 15:00 67%
August 19 15:00 50%
August 23 15:00 50%
August 25 15:00 67%
Total 30 events 117 Hours
Summit Blue Consulting 2004 ,pca AlC Pilot Draft Final Report
2 Objectives of the Assignment
The focus of this evaluation was to conduct a load reduction analysis ("LRA") of the Program
during the summer of 2004. The purpose of the analysis was to address the following issues:
What effect did cycling have on reducing and/or shifting load?
Does AlC cycling reduce overall kWh, or simply shift usage to non-cycling hours?
What is the net effect on energy?
Does household temperature change in response to cycling?
To address these issues, the LRA used the following data:
Interval whole-house metering data (from load research meters) for 174 participating
household
End-use (Air Conditioner) demand meter data for 34 participants
Data from Air Conditioner run-time loggers for 76 customers.
Hourly temperature and humidity data spanning the entire summer.
Records of cycling dates, intervals, and duration (Exhibit 1-1).
Hourly internal home temperature readings downloaded from participants ' thermostats.
Summit Blue Consulting 2004 IPCO AlC Pilot Draft Final Report
LOAD REDUCTION ANALYSIS
iWfttEWi1WNI'iWWijWSS1f:WM;M'M
Load Impacts
1 Load Impacts
2 Net kWh Effects
3 Effect on Internal Temperature
2.4 Conclusions and
Recom mendations
This chapter presents the results of the load
reduction analysis of the AlC cycling pilot program.
The simplest approach to determining impacts of a cycling day to the average load curve on a
similar non-cycling day and AlC cycling program is to compare the average load curve on the
cycling day to the average load curve on a similar non-cycling day. One problem with this
method is that it may be difficult to obtain a non-cycling day that matches the conditions of the
cycling day. In addition, this straightforward sampling approach using a sample of interval
meters is unlikely to produce high levels of accuracy. Instead, a slightly more sophisticated
approach is needed to produce levels of precision on which capacity and energy payments can be
justified. This is where the increase in precision of the fixed-effect model used in this analysis is
superior to other approaches.
As an illustration, suppose a recent evaluation of a direct load control program for air
conditioners in the Western United States produced a mean impact estimate ofO.71kW per
participant. There were a total of 600 participants in the program and metered data were obtained
on a sample of 50 participating customers. The standard deviation for this sample was 1.01 kW.
The reason the standard deviation is so large is that approximately 35 percent of the participants
had zero or minimal impacts from the program on control days, i., their AC unit was shut off
on that day, either because they were on vacation or because they were "free-riders" and
typically turned off their AC units during the day. The number of participants with near zero
impacts results in a bimodal distribution with a large variance and standard deviation for the
sample.
A 90 percent confidence interval with a standard deviation of 1.01 yields a confidence interval of
+/- .
24 kW or +/- 34 percent using the representative day approach calibrated to same day loads
and temperatures. This level of precision is common for this method and is generally accepted in
regulatory proceedings, but in some cases additional accuracy can be important. For example, if
the load impacts were part of a DR program with a regional reliability organization, it may not be
quite accurate enough for a settlement agent or to create a viable hedge product that can be used
as a tradable product in bilateral or even internal corporate transactions for capacity and reserves.
SBC's preferred approach is to directly model kW load, rather than relying upon simple or
calibrated representative day comparisons , or on approaches that model duty cycles as a stand-
alone estimation method. In this approach, the measured hourly kW load is the dependent
Summit Blue Consulting 2004 IPCO AlC Load Control Final Report
variable in a regression equation that includes weather terms, household demographics
appliance holding, and the cycling event. In essence, a structural model of the AlC load is
developed. The impact of the cycling is simply the coefficient on the cycling variable. This
approach is intuitively appealing, and has produced very precise estimates of program effects.
This analysis further refines this approach by using pooled time-series and cross-sectional data
(panel data). That is, all hourly observations over the summer for all households are combined
into the one model. In order to capture differences across households, the model includes a
constant term that is specific to each household (termed a fixed-effects model). This constant
term captures the effect on hourly AlC load of all the variables that do not change over time.
Thus, this model indirectly controls for such things as the orientation of the house, the size of the
house, and the characteristics of the AlC unit itself.
The first question addressed by this analysis is what effect cycling has on the load shape of
participating households. Exhibit 2-1 graphs the average load shape across all participants for
the 50% and 67% cycling days in July to the average non-cycling days. Clearly, the program
does affect the average load shape, with a drop in consumption during the cycling period. This
Exhibit also suggests that there may be an increase in consumption after the cycling period - the
snapback" effect. This effect will be investigated in the next section.
Exhibit 2-1: Average cycling load shape vs. non-cycling load shape
Average Control and Non-Control Days
in July
...
::J~ 2.
C1)
f! 1.
C1)
Average non-control days
--Ii- Average 50% control days
--.\-
Average 67% control days
13 15 17 19 21
Hour of the Day
In order to quantify the impacts of the Program, a fixed-effect panel data model was used that
combined weather data with the interval meter data. For this analysis, data are available both
across households (i., cross-sectional) and over time (i., time-series). The fixed effects model
Summit Blue Consulting 20041PCO AlC Load Control Final Report
can be viewed as a type of differencing model in which all characteristics of the home, which (1)
are independent of time and (2) determine the level of hourly electricity use, are captured within
the house-specific constant terms. In other words, differences in housing characteristics that
cause variation in the level of energy consumption, such as building size and structure, are
captured by constant terms representing each unique house.
Algebraically, the fixed-effect panel data model is described as follows:
Yit ai fJxit cit
Where:
Yit = C energy consumption for home during hour
ex; = constant term for home
j3 vector of coefficients
Xii vector of variables that represent factors causing changes in AC consumption for
home during hour (i., weather and control strategies)
Cit error term for home during hour
This hourly demand model was estimated over all metered participants during the months of
June through August. In order to combine the data from the load resear~h meters, the end-use
demand meters, and the AlC run-time loggers , SBC used the data from customers who received
all three meters to calibrate the run-time data from the loggers into kW demand. Thus, it was
possible to include all the different meter types into a single regression equation.
In estimating the regression equation, it was found that the initial results for thermostat
customers were not accurately reflecting the program s impact. Upon investigating the log files
from the thermostats, SBC found thermostat customers who were not controlled when they
should have been, controlled when they should not have been, early termination of the cycling
event (3 hours instead of 4 hours), and delayed starts during control periods. None of this
behavior was found in the participants with switches. There was no consistent pattern in these
errors across time or over customers. Therefore, in order to ensure that the thermostat data was
accurate, those observations where the AlC units were clearly not controlled during the control
event (i.e., their usage was 3.0 kW or more) were eliminated from the analysis.
Exhibit 2-2 presents the estimated panel model used to determine the effect on hourly kW usage
associated with AlC cycling. The weather variables include the current hour temperature and
humidity as well as non-linear temperature terms (to capture the non-linearity of AlC usage as
the temperature increases), and lagged weather variables to capture building thermodynamic
effects. The model also uses indicators for afternoon (1 pm to 8 pm) to capture general daily
usage patterns.
Summit Blue Consulting 2004/PCO AlC Load Control Final Report
Exhibit 2-2: Load Impacts Model- dependent variable is hourly kW usage, June 3rd
through August 2004.
Independent Variable Coefficient t-value
(t-value
67% cycling, 90-95 degrees, and customer has a switch 23.
67% cycling, 95+ and customer has a switch 1.32 26.
67% cycling, 90-95 degrees, and customer has a 45.
thennostat
67% cycling, 95+ and customer has a thennostat 45.
50% cycling, 90-95 degrees, and customer has a switch 18.
50% cycling, 95+ and customer has a switch 1.16 25.
50% cycling, 90-95 degrees, and customer has a 31.8
thennostat
50% cycling, 95+ and customer has a thennostat 30.
Current hour s temperature 117 44.
Currant hour s temperature squared 001 65.
Previous hour s temperature 017 12.
Current hour s humidity 002
Previous hour s humidity 005 10.
Indicator for month of June 021
Indicator for month of July 061 12.
Indicator for 12:00 006
Indicator for 13 :00 048
Indicator for 14:00 102
Indicator for 15:00 155 12.
Indicator for 16:00 176 13.
Indicator for 17:00 316 24.
Indicator for 18 :00 0.447 32.
Indicator for 18:00 542 38.
Indicator for 20:00 733 43.
Sample Size 211 ,735 (235 sites)
R-squared
Ignoring individual constants 29.
With individual constants 55.
The coefficients on the control hour variables indicate the kW savings associated with the
program at different cycling amounts and outdoor temperatures. The t-values on all these
variables show that the results are statistically significant at the 900/0 confidence level. Exhibit 2-
3 shows the savings estimate for the different cycling and outside temperatures.
Summit Blue Consulting 2004/PCO AlC Load Control Final Report
Exhibit 2-3: Program Impacts (average kW per hour)
Cycling and Temperature Switch Thermostat
67% cycling at 90-
67% cycling at 95+1.32 1.26
500/0 cycling at 90-
50% cycling at 95+1.16
This statistical model shows that the Program does indeed reduce the AlC load during a cycling
period. The next question to address is does this AlC cycling reduce overall kWh, or simply
shift energy usage to non-cycling hours? In other words, does participant's total energy usage
for the day increase (due to snapback) or decrease during days that have AlC cycling? This
question is addressed in the next section,
2 Net kWh Effects
The previous statistical model confirmed that the Program does result in a reduction of the AlC
load during a cycling period. The next question then becomes does this decrease in AlC demand
result in an overall decrease in the customers energy (kWh) usage over that day. To address this
issue, the statistical model presented in the previous section was expanded to look at hourly
effects during the cycling period as well as hours after the cycling period for all cycling
strategies at outside temperatures greater than 90 degrees. The estimated coefficients for this
model are presented in Exhibit 2-
2 The estimated equation includes the variables to control for weather and time of day that were used in Exhibit
2. For brevity, these coefficients are not included in Exhibit 2-
Summit Blue Consulting 20041PCO AlC Load Control Final Report
Exhibit 2-4: Net kWh Impacts Model- dependent variable is hourly kW usage, June
through August 2003.
Independent Variable Coefficient t-value
First hour of a cycling event 23.
Second hour of a cycling event 32.4
Third hour of a cycling event 33.
Fourth hour of a cycling event 32.
First hour after a cycling event 13.
Second hour after a cycling event 32.
Third hour after a cycling event 0.48 30.
Fourth hour after a cycling event 23.
Fifth hour after a cycling event 11.5
Sample Size 281 295 (235 households)
R -squared
Ignoring individual constants 26%
With individual constants 55%
This estimated model shows several interesting results. First, the change in AlC load during a
cycling period is very consistent for the second, third and fourth hours across the control period
at about 0.70 kW. After the cycling event there is a strong increase in electricity usage as the
aggregate AlC usage increases to recover the effects of cycling (this is termed "snapback"
The net result of cycling on kWh is found by summing the cycling coefficients and the post-
cycling coefficients. The result is that energy use has decreased, on average, by 0.89 kWh due to
cycling. Thus, cycling appears to shift some usage from cycling hours to non-cycling hours.
The net effect on kWh clearly depends upon the cycling percentage and the outside temperature
during and after the control event.
This statistical model shows that the Program does indeed reduce the AlC load during a cycling
period. The afore-mentioned analysis is based on actual results for cycling on actual temperature
days. However, the summers of 2003 and 2004 in Boise were not particularly hot, and it may be
useful for future dispatchers to estimate kW savings at different cycling rates for hotter
temperatures.
These estimates are shown in Exhibit 2-
Summit Blue Consulting 20041PCO AlC Load Control Final Report
Exhibit 2-5: Expected kW Impacts per Household at Different Temperatures.
Expected Impacts at Different Temperatures
(switches)
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67% Cylcling
Temperature
The next researchable issue for this LRA is to determine if there are any observable impacts on
the internal temperature of participant's houses associated with a control event. This issue is
addressed in the next section.
3 Effect on Internal Temperature
The previous analyses have shown that the Program produces a significant decrease in AlC load
during cycling periods. One question that arises is does this reduced AlC load result in a
significant increase in the internal temperature of the home? The hourly internal home
temperature readings collected by the programmable thermostats used in the Program were used
to address this issue. The results are discussed below.
The effect of cycling depends upon the cycling strategy, the length of cycling, the outside
temperature, and the thermostat setpoint, among other things. Therefore, in order to understand
the change in internal temperature, a regression model must be used to control for non-program
influences. Exhibit 2-5 presents the results of a regression analysis undertaken to quantify the
effect of the cycling on indoor air temperature.
In this model, the average indoor air temperature (for households with thermostats) for each hour
was the dependent variable. The independent variables consisted of outside temperature and
humidity variables. The effect of the program on indoor temperature was captured by the
cycling strategy (50% or 670/0) for each hour during the control period. To capture the delayed
effect on indoor temperature from cycling, variables were included which denoted hours that
were one, two, and three hours after the cycling period. For simplicity, the Exhibit does not
include the coefficients on the outside weather conditions or time of day variables.
Summit Blue Consulting 20041PCO AlC Load Control Final Report
Exhibit 2-6: Indoor Temperature Model - dependent variable is hourly indoor
temperature, June through August 2003.
Independent Variable Coefficient t-value
Cycle 67% first hour 1.05
Cycle 670/0 second hour
Cycle 67% third hour
Cycle 670/0 fourth hour 1.56 8.4
Cycle 50% first hour 1.13
Cycle 50% second hour 1.17
Cycle 500/0 third hour 1.16
Cycle 50% fourth hour 1.29
Sample Size 439,554 (143 sites)
R -squared
Ignoring individual constants 28%
With individual constants 35%
Exhibit 2-5 shows that during the cycling period, the average indoor temperature for all
thermostat participants increases throughout the period, reaching a maximum at the last hour of
control. This maximum is 1.60 with 67% cycling and 1.30 with 50% cycling. The clear
conclusion is that the effect of cycling on the internal temperature, even during 67% cycling
days, is small and is unlikely to be noticed by most customers.
To determine how many participants experience a greater- or less-than average temperature
change as a result of cycling, further analysis was conducted that looked at the difference
between the hourly temperature readings for a single cycling day to the same hours during a
similar non-cycling day.
The cycling day chosen was July14th (average outdoor temperature during cycling was 970 and
670/0 cycling was used) and the non-cycling day was July 9th (average outdoor temperature
during comparable time was also 970). Exhibit 2.6 presents a histogram of the difference
between the internal temperatures in each house between the two days (cycling on the 15th began
at 16:00 and lasted 4 hours).
Summit Blue Consulting 2004 IPCO AlC Load Control Final Report
Exhibit 2-7: Distribution of indoor temperature difference among homes, July 13th to July
14th.
Temp. Diff.Hour ending
2:00 PM
Hour
ending 3:00
Hour
ending
4:00 PM
Hour
ending
5:00PM
Hour
ending
6:00 PM
Hour
ending
7:00 PM
60 and
fewer
60 and
greater
Average 0.40
% of Homes
with:;:.4
degrees
temperature
gain 1 %120
These results show that there is an increase in indoor temperature during cycling, though this
difference is very small, averaging less than 20 . About 12% of homes experienced temperature
gains greater than 4 degrees at 7:00 p.m. at 67% cycling.
However, this analysis cannot control for the fact that the control day is the second day of relatively
high temperatures, so the house would be hotter on average than the previous day even if it was not
a control day.
Summit Blue Consulting 20041PCO AlC Load Control Final Report
4 Conclusions and Recommendations
In conclusion, this load reduction analysis of IPCo' s Air Conditioning Cycling Pilot Program for
the summer of 2004 has shown the following:
The Program does produce substantive and measurable effect on AlC load during cycling
periods:
When the outside temperature exceeded 950, 67% cycling produced a savings of
1.32 kW for switches and 1.26 kW for thermostat participants. 500/0 cycling
produced 1.16 kW for switches and 0.86 kW savings for thermostat participants.
When the outside temperature was between 900 and 950, 67% cycling produced a
savings of 0.89 kW for switches and 0.92 kW for thermostat participants. 50%
cycling produced savings of 0.81 kW for switches and 0.77 kW savings for
thermostat participants
This reduction in AlC load during cycling results in participants shifting AlC usage to
non-cycling periods. Overall, this results in a slight net decrease in kWh usage of 0.
kWh during a typical cycling day.
Cycling does increase the internal temperature of the homes, particularly in the last hour
of a cycling period. However, this effect is relatively small, averaging less than 20
Based on the results of this analysis, SBC's analysis of the 2003 program, and SBC's previous
experience with similar AlC cycling programs throughout the country, we have developed the
following list of recommendations:
Using AlC run-time loggers are a viable cost-effective alternative to whole premise and
end use demand meters. However, some end-use meters are necessary to calibrate
percentage on data from the loggers to k W demand.
Data from the thermostats again presented challenges, as was the case in the evaluation of
the 2003 program. This analysis found thermostat customers who were not controlled
when they should have been, controlled when they should not have been, early
termination of the cycling event (3 hours instead of 4 hours), and delayed starts during
control periods. None of this behavior was found in the participants with switches.
When these problematic cases where eliminated from the analysis, the thermostat
participants had similar kW impacts as participants with switches.
670/0 cycling scheme results in a significant increase in kW savings, while the
aggregate effect on the temperature of the house is only 0.270 relative to 50% cycling.
Therefore, IPCo should be comfortable with using this higher cycling rate when the need
anses.
Summit Blue Consulting 20041PCO AlC Load Control Final Report