HomeMy WebLinkAbout20230208ExhibitsABC.pdf
PacifiCorp’s Planned Changes to Wattmart Homes in Idaho
May 2021
PacifiCorp is planning modifications to the Wattmart Homes program (“Program”) for residential
customer energy efficiency offered through Schedule 118. Consistent with the flexible tariff
process,1 notice of changes will be posted on the Program website2 at least 45 days prior to
implementation. Proposed changes to the incentive tables are included in Exhibit A.
DESCRIPTION OF PLANNED WATTSMART HOMES CHANGES
Proposed adjustments are listed below, with further explanation provided in subsequent sections.
1. Miscellaneous updates to incentives and eligibility criteria for the following measure
categories:
a. Appliances;
b. Weatherization;
c. HVAC;
d. Lighting; and
e. New Homes.
MEASURE UPDATES
As a result of the Company’s ongoing analysis of its programs, savings assumptions, and incentive
levels, several proposed changes have been identified to improve Program offerings. The purpose
of these changes is to better align with current measure research, market conditions, and cost-
effectiveness thresholds. Accordingly, it is proposed to make the following adjustments:
Table 1 – Appliance Incentives
• Evaporative Coolers, Room Air Conditioners, and Smart Thermostats – These
measures are being shifted to Table 3 under HVAC Incentives. No other changes are being
made to these offerings, except for Evaporative Coolers, as described under the Table 3
section below.
• Advanced Power Strips – This offering is being retired due to little applicability and
participation in the market, and lack of cost effectiveness.
• Room Air Cleaner – This is a new measure being added to the Program that will be
initially available through the mid-market, instant rebate, and post-purchase application
channels. Room air cleaners/purifiers are commonly used in residences to remove fine
particles such as dust, pollen, smoke, and pet dander from indoor air. This offering will
incentivize customers to replace their existing equipment with ENERGY STAR certified
equipment, which are 40 percent more efficient than non-certified air cleaner models. The
maximum incentive for this new offering will be $25. The initially offered incentive
amount will be set at $25 for equipment with a Clean Air Delivery Rating of 30-200.
1 Order 29976 in Case No. PAC-E-05-10
2 https://www.wattsmarthomes.com/
PacifiCorp’s Planned Changes to Wattsmart Homes in Idaho
May 2021
Page 2
• Heat Pump Clothes Dryer – This is a new measure being added to the Program that will
be initially available through the instant rebate channel. Heat pump clothes dryers make
use of an integrated heat pump system, unlike traditional, less energy efficient electric
dryers that use a heating element. Initial minimum requirements for eligible dryers will be
a Utility Combined Energy Factor range of 3.00 – 8.00 and 4 cubic feet or greater. The
maximum and initially offered incentive amounts will be set at $230 per unit.
• Dishwasher – This is a new measure being added to the Program that will be initially
available through the instant rebate and post-purchase application channels. The initial
minimum requirement for eligible units will be ENERGY STAR certification. The
maximum and initially offered incentive for this new offering will be set at $20.
• Freezer – This is a new measure being added to the Program that will be initially available
through the instant rebate and post-purchase application channels. Initial minimum
requirements for eligible units will be ENERGY STAR certification, chest type and 7.75
cubic feet or greater. The maximum and initially offered incentive for this new offering
will be set at $20.
• Refrigerator – This is a new measure being added to the Program that will be initially
available through the instant rebate and post-purchase application channels. Initial
minimum requirements for eligible units will be ENERGY STAR certification, side
mounted freezer and 7.75 cubic feet or greater. The maximum and initially offered
incentive for this new offering will be set at $50.
• WiFi Smart Plug – This is a new measure being added to the Program that will be initially
available through the instant rebate and post-purchase application channels. WiFi smart
plugs will enable customers to control and schedule the energy usage from their electrical
outlets to be more energy efficient. The maximum and initially offered incentive amounts
will be set at $10 per plug.
• Smart Home Energy Management System – This is a new measure being added to the
Program that will be initially available through the mid-market and post-purchase
application channels. This offering will incentivize customers to gain more control over
their energy use by enabling them to better control and schedule usage from their electrical
outlets and lighting systems with a central hub. Incentives for this offering will be based
on the smart equipment bundled, with a maximum incentive set at $275. The initially
offered incentive amount will be $150 for bundles consisting of 1 hub, 3 smart switches,
and 10 smart plugs. A $235 incentive will be offered to customers who also include a smart
thermostat in the bundle.
• Engine Block Heater Control – This is a new measure being added to the Program that
will initially be available through the mid-market and post-purchase application channels.
Customers who use engine block heaters tend to plug them in the night to keep their engine
block from freezing overnight. Heater controls will give customers the ability to schedule
the heater and reduce using more energy consumption than is necessary to heat the engine
block. The maximum incentive for this new offering will be $200. Initially offered
incentives will be set at $200 for heater controls that are mounted to the engine or hard
wired, and $150 for heater controls requiring an extension cord to use.
PacifiCorp’s Planned Changes to Wattsmart Homes in Idaho
May 2021
Page 3
Table 2 – Weatherization Incentives
• Infiltration Control (Air Sealing) – This is a new measure being added to the Program
that will initially be available through the post-purchase application channel. Lowering the
air infiltration rate by sealing small leaks around window frames, doorframes, power
outlets, plumbing, and wall corners can provide significant energy savings. The maximum
incentive for this new offering will be $0.30 per square foot. The initially offered incentive
will be set at $0.10 per square foot.
• Rooftop Heat Tape Controller – This is a new measure being added to the Program that
will initially be available through the post-purchase application channel. Heat tape timers
are designed to reduce the run time of rooftop heat cables for snow melt and de-icing. The
maximum and initially offered incentive for this new offering will be $100.
Table 3 – HVAC Incentives
• Heat Pumps – There are new and existing offerings that fit under the heat pump category
and will be consolidated into a single line item in Table 3. The maximum incentive for the
heat pump category will be set at $4,500. The offered incentives will be broken out as
follows:
o Heat Pump Upgrade – This is a current offering set at $500 and will remain
unchanged as part of these measure updates.
o Heat Pump Conversion – This is a current offering divided into two tiers, but is
being consolidated into a single tier as part of these measure updates. Customers
will receive a $650 incentives and contractors will receive a $100 incentive.
o Heat Pump Best Practices Installation and Proper Sizing – This is a current offering
set at $250 and will remain unchanged as part of these measure updates.
o Ductless Heat Pump – This is a current offering set at $800 and will remain
unchanged as part of these modifications.
o Ductless Heat Pump Conversion – This is a new offering being added under the
Heat Pump category that will initially be available through the post-purchase
application channel. This incentivizes customers to convert from forced air to
ductless systems. The initially offered incentive amounts will be set at $750 for
customers and $50 for contractors.
o Ground Source Heat Pump Upgrade (from air source heat pump) – This is a current
offering set at $2,000 and will remain unchanged as part of these modifications.
o Ground Source Heat Pump Conversion from Forced Air Furnace – This is a current
offering set at $3,000 and will remain unchanged as part of these modifications.
o Variable Capacity Heat Pump – This is a new offering being added under the Heat
Pump measure category that will initially be available through the post-purchase
application channel. Variable capacity heat pumps allow equipment to operate at
the actual load, at lower outdoor temperatures, and not cycle on/off. The initially
offered incentive amounts for this new offering will be set at $300 for customers
and $100 for contractors.
PacifiCorp’s Planned Changes to Wattsmart Homes in Idaho
May 2021
Page 4
o Supplemental Ductless Heat Pump – This is a new offering being added under the
Heat Pump category that will initially be available through the post-purchase
application channel. Supplemental ductless heat pumps will help heat and cool
bonus rooms and unconditioned spaces. The initially offered incentive amounts will
be set at $150 for customers and $50 for contractors.
o Dual Fuel Heat Pump – Dual fuel heat pumps are being added to the Program as a
new offering under the Heat Pump measure type that will initially be available
through the post-purchase application channel. Dual-fuel heat pumps work in
conjunction with gas furnaces to deliver high efficiency air conditioning and
heating in the spring, summer, and fall. During the coldest months, gas furnaces
provide backup heat, if necessary. Dual fuel technology combines the cooling and
heating performance from a heat pump with the consistent heating capacity of a gas
furnace. What makes this system so precise and energy efficient for heating is that
it seamlessly alternates between the two energy sources for heating comfort. The
initially offered incentives for this new offering will be set at $2,000 and $300 for
customers and contractors, respectively.
• 95% Gas Furnace Equipped w/ Electronically Commutated Motor – This offering is
being retired due to electronically commutated motors being adopted as a federal standard
as of July 3, 2019.
• Whole Home Upgrade Package – This offering is being retired due to it no longer being
cost effective.
• Line Voltage Thermostat – This is a new measure being added to the Program that will
initially be available through the post-purchase application channel. Line voltage
thermostats are designed for use with an electric baseboard, wall, and zonal heated homes.
The maximum incentive for this offering will be set at $50. The initially offered incentives
will be set at $30 for thermostats that are UL or CSA listed models, and $50 for UL or CSA
models that are also WiFi enabled.
• Evaporative Coolers, Room Air Conditioner, and Smart Thermostats – As mentioned
above, these measures shifted from Table 1 to Table 3. No other changes are being made
to these offerings, except for Evaporative Coolers, which will have a new offering added
for lower Cubic Feet per Minute (CFM) models ranged between 500-1,999 CFM. The
initially offered incentive for this new offering will be set at $50. The maximum incentive
amount for the Evaporative Cooler category will remain at $150 as part of these
modifications.
• Bathroom Exhaust Fan – This is a new measure being added to the Program that will
initially be available through the instant rebate and post-purchase application channels. The
maximum and offered incentive amounts for this new offering will be set at $10 for
ENERGY STAR fans, which will use less energy than standard models, reducing start up
and steps while still maintaining adequate ventilation.
PacifiCorp’s Planned Changes to Wattsmart Homes in Idaho
May 2021
Page 5
Table 4 – Lighting Incentives
• LEDs (General, Specialty, Downlight, Fixture) – The maximum incentive amounts for
these offerings will be reduced to $3 per bulb/fixture in order to maintain cost-
effectiveness. It should be noted that all current offered lighting incentives are either at or
below the $3 amount, so lowering this maximum incentive will not impact current
customer offerings.
• Smart Light Switch – This is a new measure being added to the Program that will be
initially available through the instant rebate, mid-market, and post-purchase application
channels. Smart light switches will enable customers to control and schedule their lighting
operations to be more efficient and reduce lighting usage when it is not needed. The
maximum and initially offered incentive amounts will be set at $10 per switch.
Table 5 – Plumbing Incentives
• No changes are being made to this table.
Table 6 – New Homes Incentives
• New Homes Heat Pumps – There are new and existing offerings that fit under the new
homes heat pump category and will be consolidated into a single line item in Table 6. The
maximum incentive for the new homes heat pump category will be set at $4,500. The
offered incentives will be broken out as follows:
o New Homes Heat Pump – This is a current offering set at $500, but will be reduced
to $400 based on a decreased savings value from the measure analysis.
o New Homes Ductless Heat Pump – This is a current offering set at $1,300. This
offering will be updated to be split between single and multi-head equipment.
Single head equipment will receive a $750 incentive while a multi-head unit will
receive a $1,300 incentive.
o New Homes Supplemental Ductless Heat Pump – This offering will also be added
to the New Homes Table as a standalone offering, as described in the Table 3
section above. The maximum and initially offered incentive amounts will be set at
$100.
o Dual Fuel Heat Pump – This offering will also be added to the New Homes Table
as a standalone offering, as described in the Table 3 section above. The initially
offered incentive amounts will be set at $2,000 for customers and $300 for
contractors.
• New Homes Heat Pump Water Heater – This is a current offering set at $700 for
Northwest Energy Efficiency Alliance (NEEA) Tier 3 - 4 equipment. A lower $600
incentive will be offered going forward under this category for NEEA Tier 1 – 2 equipment.
• New Homes Whole Home Performance Path, High Performance Manufactured
Homes, and Manufactured Home Eco-rate – These are current offerings that are being
retired due to little or no applicability in the market. These offerings will be replaced with
the new offerings described below.
PacifiCorp’s Planned Changes to Wattsmart Homes in Idaho
May 2021
Page 6
• New Homes Energy Star Certification – This is a new offering being added to the
Program, which requires new homes to be built above prescriptive building code
requirements. The maximum and initially offered incentive amounts will be set at $25.
• New Homes Northwest Energy Efficient Manufactured (NEEM) – This is a new
offering being added to the Program, which requires new homes to be built with additional
insulation, high efficiency ventilation and appliances, and smart thermostats in order to
meet NEEM housing certification. The maximum incentive for this new offering will be
set at $1,500. The initially offered incentive amounts will be divided into two tiers: Tier 1
– Energy Star with NEEM 2.0 and Tier 2 – Energy Star with NEEM 2.0 and ductless heat
pump. The initially offered incentive amounts for Tier 1 will be set at $1,050 for customers
and $200 for contractors, and Tier 2 will be set at $1,300 for customers and $200 for
contractors.
• New Homes Home Energy Rating System (HERS) – This is a new offering being added
to the Program based on the HERS index. New homes will be incentivized to meet the
various HERS tiers, which measure a home’s level of energy efficiency. For new homes
with electric heat, the maximum incentive will be set at $1,200. The initially offered
incentive amounts for electrically heated homes will be set at $400, $800, and $1,200 for
homes meeting HERS index ranges of 70-63, 62-54, or 53 and lower, respectively. For new
homes with gas heat, the maximum incentive will be set at $600. The initially offered
incentive amounts for gas heated homes will be set at $200, $400, and $600 for homes
meeting HERS index ranges of 70-63, 62-54, or 53 and lower, respectively.
COST-EFFECTIVENESS
Cost effectiveness analyses for these changes are attached hereto as Exhibits B and C, and were
based on the maximum “up to” incentive levels listed in the flexible tariff tables. The Tables below,
pulled from Exhibits B and C, present the expected cost-effectiveness for 2021-2022 assuming
these proposed changes become effective. Additional details and inputs are included in Exhibits
B and C. The Program is expected to remain cost-effective from the Utility Cost Test perspective
at 1.04 and 1.08 for 2021 and 2022, respectively.
Table 5 (Exhibit B) – Wattsmart Homes Program (without NEBs) Cost Effectiveness PY2021
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net Benefits
Benefit
/Cost
Ratio
Total Resource Cost Test (PTRC)
+ Conservation Adder $0.0937 $1,819,757 $1,216,356 -$603,401 0.67
Total Resource Cost Test (TRC)
No Adder $0.0937 $1,819,757 $1,105,778 -$713,979 0.61
Utility Cost Test (UCT) $0.0545 $1,058,428 $1,105,778 $47,351 1.04
Rate Impact Test (RIM) $3,226,205 $1,105,778 -$2,120,427 0.34
Participant Cost Test (PCT) $1,458,662 $2,967,012 $1,508,350 2.03
Lifecycle Revenue Impacts
($/kWh) $0.0000008435
PacifiCorp’s Planned Changes to Wattsmart Homes in Idaho
May 2021
Page 7
Table 5 (Exhibit C) – Wattsmart Homes Program (without NEBs) Cost Effectiveness PY2022
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net Benefits
Benefit
/Cost
Ratio
Total Resource Cost Test (PTRC)
+ Conservation Adder $0.0849 $1,792,822 $1,382,786 -$410,035 0.77
Total Resource Cost Test (TRC)
No Adder $0.0849 $1,792,822 $1,257,079 -$535,743 0.70
Utility Cost Test (UCT) $0.0549 $1,159,515 $1,257,079 $97,563 1.08
Rate Impact Test (RIM) $3,572,505 $1,257,079 -$2,315,427 0.35
Participant Cost Test (PCT) $1,401,196 $3,328,951 $1,927,756 2.38
Lifecycle Revenue Impacts
($/kWh) $0.0000009124
Exhibits Provided
Exhibit A – Clean/Redlined Wattsmart Homes incentive tables.
Exhibit B – Wattsmart Homes Program Cost Effectiveness 2021.
Exhibit C – Wattsmart Homes Program Cost Effectiveness 2022.
Exhibit A
Exhibit A - Idaho WSH Program Incentive Tables – Effective June 21, 2021September 3, 2018 Page 1 of 3
EXHIBIT A
Idaho Wattsmart Homes Program –
Current Offerings with Proposed Changes to Measures, Incentives, and Qualifications
This document includes the following three sections:
• Definitions of terms used in program documents
• Incentives – General Information
• Incentive tables
Definitions
Customer: Any party who has applied for, been accepted and receives service at the real property, or
is the electricity user at the real property.
Energy Efficiency Incentive: Payments of money made by Company to Owner or Customer or other
approved party for installation of an Energy Efficiency Measure pursuant to an approved Energy
Efficiency Incentive Application.
Energy Efficiency Incentive Application: An application submitted by Owner or Customer to Rocky
Mountain Power for Energy Efficiency Incentives.
Energy Efficiency Measure (EEM): A permanently installed measure which can improve the
efficiency of the Customer's electric energy use.
New Home: A newly constructed residence.
Mid-Market: An approved third party (typically a contractor, manufacturer, or retailer) who installs
Energy Efficiency Measures at the real property or sells Energy Efficiency Measures.
Owner: The person who has both legal and beneficial title to the real property, and is the mortgager
under a duly recorded mortgage of real property, the trustor under a duly recorded deed of trust.
Prescriptive incentives: Maximum per unit incentives are listed in the program incentive tables for
specific EEMs. Incentives are subject to change and current incentives can be found at
http://www.homeenergysavings.net/Idaho.
Qualification and Installation Requirements: Requirements that must be met in order to receive an
incentive for any EEM. Requirements are subject to change and current requirements can be found at
http://www.homeenergysavings.net/Idaho.
Exhibit A - Idaho WSH Program Incentive Tables – Effective June 21, 2021September 3, 2018 Page 2 of 3
Table 1 - Appliance Incentives
Measure Customer/Mid-Market Incentive
“Up To”
Clothes Washer $50
Evaporative Cooler Tier 1 - $75
Tier 2 - $150
Room Air Conditioner $20
Heat Pump Water Heater Tier 1 - $600
Tier 2 and above - $700
Advanced Power Strips $60
Smart Thermostat $100
Room Air Cleaner $25
Heat Pump Clothes Dryer $230
Dishwasher $20
Freezer $20
Refrigerator $50
Wifi Smart Plug $10
Smart Home Energy Management System $275
Engine Block Heater Control $200
Table 2 - Weatherization Incentives
Measure Customer/Mid-Market Incentive
“Up To”
Insulation – Attic $0.50/sf.
Insulation – Floor $0.50/sf.
Insulation – Wall $0.65/sf.
Windows Tier 1- $1.00/sf
Tier 2- $3.00/sf
Infiltration Control (Air Sealing) $.30/SqFt
Rooftop Heat Tape Controller $100
Table 3 - HVAC Incentives
Measure Customer/Mid-Market Incentive
“Up To”
Central Air Conditioner $100
Duct Sealing and Insulation $450
Duct Sealing Only – Pre-Insulated Ducts $250
Heat Pump Upgrade $4,500
Heat Pump Conversion Tier 1 - $750
Tier 2 - $850
Heat Pump Best Practices Installation
and Proper Sizing $250
Ductless Heat Pump $800
95% Gas Furnace Equipped w/
Electrically Commutated Blower Motor $250
Ground Source Heat Pump Upgrade
from Air Source Heat Pump (ASHP) $2,000
Ground Source Heat Pump Conversion
from Forced Air Furnace $3,000
Whole Home Upgrade Package $1,000
Exhibit A - Idaho WSH Program Incentive Tables – Effective June 21, 2021September 3, 2018 Page 3 of 3
Measure Customer/Mid-Market Incentive
“Up To”
Manufactured Homes Duct Sealing $750
Line Voltage Thermostat Tier 1: $30
Tier 2: $50
Smart Thermostat $100
Room Air Conditioner $20
Bathroom Exhaust Fan $10
Evaporative Cooler $150 500 to 1999 CFM - $50
Table 4 - Lighting Incentives
Measure Customer/Mid-Market Incentive
“Up To”
LEDs (Light Emitting Diodes) - General $13.00
LED – Specialty $39.00
LED – Downlight $13.00
LED Fixture $310
Smart Light Switch $10
Table 5 - Plumbing Incentives
Measure Customer/Mid-Market Incentive
“Up To”
Low Flow Showerheads $31
Low Flow Faucet Aerators $5
Table 6 - New Homes Incentives
Measure Customer/Mid-Market Incentive
“Up To”
New Homes Heat Pumps $4,500
New Homes Ductless Heat Pumps $1,300
New Homes Heat Pump Water Heater $700
New Homes Windows $3.00/sf.
New Homes Whole Home Performance Path $5000
New High Performance Manufactured Homes $2,000
New Manufactured Homes ENERGY STAR $1,000
New Manufactured Homes Eco-rated Homes $1,250
New Homes Energy Star v3.0 Certification $25
New Homes NEEM 2.0 Manufactured $1,500
New Homes HERS $1,200
Exhibit A - Idaho WSH Program Incentive Tables – Effective June 21, 2021 Page 1 of 3
EXHIBIT A
Idaho Wattsmart Homes Program –
Current Offerings with Proposed Changes to Measures, Incentives, and Qualifications
This document includes the following three sections:
• Definitions of terms used in program documents
• Incentives – General Information
• Incentive tables
Definitions
Customer: Any party who has applied for, been accepted and receives service at the real property, or
is the electricity user at the real property.
Energy Efficiency Incentive: Payments of money made by Company to Owner or Customer or other
approved party for installation of an Energy Efficiency Measure pursuant to an approved Energy
Efficiency Incentive Application.
Energy Efficiency Incentive Application: An application submitted by Owner or Customer to Rocky
Mountain Power for Energy Efficiency Incentives.
Energy Efficiency Measure (EEM): A permanently installed measure which can improve the
efficiency of the Customer's electric energy use.
New Home: A newly constructed residence.
Mid-Market: An approved third party (typically a contractor, manufacturer, or retailer) who installs
Energy Efficiency Measures at the real property or sells Energy Efficiency Measures.
Owner: The person who has both legal and beneficial title to the real property, and is the mortgager
under a duly recorded mortgage of real property, the trustor under a duly recorded deed of trust.
Prescriptive incentives: Maximum per unit incentives are listed in the program incentive tables for
specific EEMs. Incentives are subject to change and current incentives can be found at
http://www.homeenergysavings.net/Idaho.
Qualification and Installation Requirements: Requirements that must be met in order to receive an
incentive for any EEM. Requirements are subject to change and current requirements can be found at
http://www.homeenergysavings.net/Idaho.
Exhibit A - Idaho WSH Program Incentive Tables – Effective June 21, 2021 Page 2 of 3
Table 1 - Appliance Incentives
Measure Customer/Mid-Market Incentive
“Up To”
Clothes Washer $50
Heat Pump Water Heater $700
Room Air Cleaner $25
Heat Pump Clothes Dryer $230
Dishwasher $20
Freezer $20
Refrigerator $50
Wifi Smart Plug $10
Smart Home Energy Management System $275
Engine Block Heater Control $200
Table 2 - Weatherization Incentives
Measure Customer/Mid-Market Incentive
“Up To”
Insulation $0.65/sf.
Windows $3.00/sf
Infiltration Control (Air Sealing) $.30/SqFt
Rooftop Heat Tape Controller $100
Table 3 - HVAC Incentives
Measure Customer/Mid-Market Incentive
“Up To”
Central Air Conditioner $100
Duct Sealing and Insulation $450
Duct Sealing Only – Pre-Insulated Ducts $250
Heat Pump $4,500
Manufactured Homes Duct Sealing $750
Line Voltage Thermostat $50
Smart Thermostat $100
Room Air Conditioner $20
Bathroom Exhaust Fan $10
Evaporative Cooler $150
Table 4 - Lighting Incentives
Measure Customer/Mid-Market Incentive
“Up To”
LEDs (Light Emitting Diodes) - General $3
LED – Specialty $3
LED – Downlight $3
LED Fixture $3
Smart Light Switch $10
Exhibit A - Idaho WSH Program Incentive Tables – Effective June 21, 2021 Page 3 of 3
Table 5 - Plumbing Incentives
Measure Customer/Mid-Market Incentive
“Up To”
Low Flow Showerheads $31
Low Flow Faucet Aerators $5
Table 6 - New Homes Incentives
Measure Customer/Mid-Market Incentive
“Up To”
New Homes Heat Pumps $4,500
New Homes Heat Pump Water Heater $700
New Homes Windows $3.00/sf.
New Manufactured Homes ENERGY STAR $1,000
New Homes Energy Star v3.0 Certification $25
New Homes NEEM 2.0 Manufactured $1,500
New Homes HERS $1,200
Exhibit B
Memorandum
1375 Walnut Street
Suite 100 | Boulder, CO 80302
303.728.2500 main
guidehouse.com
To: Jillian Fredrickson, PacifiCorp
From: David Basak, Guidehouse
Date: April 16, 2021
Re: Cost-Effectiveness Results for the Wattsmart Homes Program PY2021 – Idaho
Guidehouse estimated the cost-effectiveness results for the Idaho Wattsmart Homes Program, based
on 2021 costs and savings estimates provided by PacifiCorp. This memo provides the cost-
effectiveness results for the overall program and for the 6 measure categories.
Cost-effectiveness was tested using the 2019 IRP decrement for all measure categories. The
program passes the cost-effectiveness for the UCT and PCT test. The memo consists of the following
tables.
Table 1 - Wattsmart Homes Program Inputs
Table 2 – Wattsmart Homes Annual Program Costs
Table 3 – Wattsmart Homes Program – Savings by Measure Category
Table 4 - Benefit/Cost Ratios by Measure Category
Table 5 – Wattsmart Homes Program Level (without NEBs) Cost-Effectiveness Results
Table 6 - Wattsmart Homes Appliances Cost-Effectiveness Results
Table 7 - Wattsmart Homes Building Shell Cost-Effectiveness Results
Table 8 - Wattsmart Homes HVAC Cost-Effectiveness Results
Table 9 - Wattsmart Homes Lighting Cost-Effectiveness Results
Table 10 - Wattsmart Homes New Homes Cost-Effectiveness Results
Table 11 - Wattsmart Homes Water Heating Cost-Effectiveness Results
Table 12 - Wattsmart Homes Non-Energy Benefits by Measure
Table 13 - Wattsmart Homes Program (with NEBs) Cost-Effectiveness Results
Table 14 - Wattsmart Homes HVAC (with NEBs) Cost-Effectiveness Results
Table 15 - Wattsmart Homes Lighting (with NEBs) Cost-Effectiveness
PY2021 Idaho Cost-Effectiveness Results – Wattsmart Homes Program
April 16, 2021
Page 2 of 6
Table 1 - Wattsmart Homes Program Inputs
Parameter Value
Discount Rate 6.92%
Residential Line Loss 9.06%
Residential Energy Rate ($/kWh)¹ $0.1036
Inflation Rate 2.28%
¹ Future rates determined using a 2.28% annual escalator.
Table 2 – Wattsmart Homes Annual Program Costs
Measure Group Engineering
Costs
Utility
Admin
Program
Delivery
Program
Dev. Incentives Total Utility
Costs
Gross
Customer
Costs
Appliances $0 $2,219 $52,713 $0 $56,800 $111,732 $85,682
Building Shell $0 $624 $14,818 $0 $27,471 $42,913 $93,473
HVAC $0 $10,452 $248,244 $0 $324,924 $583,620 $703,900
Lighting $0 $6,000 $33,430 $0 $103,658 $143,088 $29,910
New Homes $0 $2,479 $58,888 $0 $97,794 $159,162 $529,903
Water Heating $0 $225 $5,338 $0 $12,350 $17,913 $15,793
Total $0 $22,000 $413,430 $0 $622,998 $1,058,428 $1,458,662
Table 3 – Wattsmart Homes Program – Savings by Measure Category
Measure Group Gross kWh
Savings
Realization
Rate
Adjusted
Gross kWh
Savings
Net to
Gross
Ratio
Net kWh
Savings
Measure
Life
Appliances 275,725 80% 221,386 97% 213,902 8
Building Shell 77,508 100% 77,508 91% 70,532 45
HVAC 1,298,494 95% 1,233,849 98% 1,208,391 11
Lighting 419,138 100% 419,138 78% 326,927 12
New Homes 308,028 84% 257,900 93% 239,854 32
Water Heating 27,921 100% 27,921 100% 27,921 13
Total 2,406,813 93% 2,237,701 93% 2,087,527 15
PY2021 Idaho Cost-Effectiveness Results – Wattsmart Homes Program
April 16, 2021
Page 3 of 6
Table 4 - Benefit/Cost Ratios by Measure Category
Measure Group PTRC TRC UCT RIM PCT
Appliances 0.57 0.51 0.63 0.26 2.57
Building Shell 0.86 0.78 1.83 0.41 2.03
HVAC with NEBs 0.65 0.59 0.96 0.34 2.01
HVAC 0.65 0.59 0.96 0.34 2.01
Lighting with NEBs 6.20 5.96 1.06 0.32 23.48
Lighting 2.67 2.42 1.06 0.32 17.69
New Homes 0.46 0.42 1.44 0.38 1.08
Water Heating 0.67 0.61 0.73 0.27 2.67
Total with NEBs 0.79 0.73 1.04 0.34 2.15
Total 0.67 0.61 1.04 0.34 2.03
Table 5 – Wattsmart Homes Program Level (without NEBs) Cost-Effectiveness Results
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.0937 $1,819,757 $1,216,356 -$603,401 0.67
Total Resource Cost Test (TRC)
No Adder $0.0937 $1,819,757 $1,105,778 -$713,979 0.61
Utility Cost Test (UCT) $0.0545 $1,058,428 $1,105,778 $47,351 1.04
Rate Impact Test (RIM) $3,226,205 $1,105,778 -$2,120,427 0.34
Participant Cost Test (PCT) $1,458,662 $2,967,012 $1,508,350 2.03
Lifecycle Revenue Impacts ($/kWh) $0.0000008435
Table 6 through Table 11 provides cost-effectiveness results without NEBs for all 6 measures.
Table 6 - Wattsmart Homes Appliances Cost-Effectiveness Results
(Load Shape – Residential_Dryer_7P, Residential_HPWH_7P, ID_Single_Family_Plug)
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.0950 $136,456 $77,154 -$59,302 0.57
Total Resource Cost Test (TRC)
No Adder $0.0950 $136,456 $70,140 -$66,316 0.51
Utility Cost Test (UCT) $0.0778 $111,732 $70,140 -$41,592 0.63
Rate Impact Test (RIM) $271,647 $70,140 -$201,507 0.26
Participant Cost Test (PCT) $85,682 $220,405 $134,723 2.57
Lifecycle Revenue Impacts ($/kWh) $0.0000006790
PY2021 Idaho Cost-Effectiveness Results – Wattsmart Homes Program
April 16, 2021
Page 4 of 6
Table 7 - Wattsmart Homes Building Shell Cost-Effectiveness Results
(Load Shape – ID_Single_Family_Heat_Pump)
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.0765 $100,503 $86,293 -$14,209 0.86
Total Resource Cost Test (TRC)
No Adder $0.0765 $100,503 $78,448 -$22,054 0.78
Utility Cost Test (UCT) $0.0326 $42,913 $78,448 $35,535 1.83
Rate Impact Test (RIM) $190,826 $78,448 -$112,378 0.41
Participant Cost Test (PCT) $93,473 $190,013 $96,540 2.03
Lifecycle Revenue Impacts ($/kWh) $0.0000000903
Table 8 - Wattsmart Homes HVAC Cost-Effectiveness Results
(Load Shape – ID_Single_Family_Cooling, ID_Single_Family_Heat_Pump, ID_DHP_COOL_7P)
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.1004 $951,580 $619,064 -$332,517 0.65
Total Resource Cost Test (TRC)
No Adder $0.1004 $951,580 $562,785 -$388,795 0.59
Utility Cost Test (UCT) $0.0616 $583,620 $562,785 -$20,835 0.96
Rate Impact Test (RIM) $1,640,004 $562,785 -$1,077,219 0.34
Participant Cost Test (PCT) $703,900 $1,413,196 $709,296 2.01
Lifecycle Revenue Impacts ($/kWh) $0.0000025338
Table 9 - Wattsmart Homes Lighting Cost-Effectiveness Results
(Load Shape – Residential_Lighting_7P)
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.0211 $62,760 $167,358 $104,598 2.67
Total Resource Cost Test (TRC)
No Adder $0.0211 $62,760 $152,144 $89,384 2.42
Utility Cost Test (UCT) $0.0480 $143,088 $152,144 $9,056 1.06
Rate Impact Test (RIM) $474,966 $152,144 -$322,822 0.32
Participant Cost Test (PCT) $29,910 $529,142 $499,232 17.69
Lifecycle Revenue Impacts ($/kWh) $0.0000026404
PY2021 Idaho Cost-Effectiveness Results – Wattsmart Homes Program
April 16, 2021
Page 5 of 6
Table 10 - Wattsmart Homes New Homes Cost-Effectiveness Results
(Load Shape – ID_Single_Family_Whole_House)
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.1390 $547,103 $252,190 -$294,913 0.46
Total Resource Cost Test (TRC)
No Adder $0.1390 $547,103 $229,264 -$317,840 0.42
Utility Cost Test (UCT) $0.0404 $159,162 $229,264 $70,101 1.44
Rate Impact Test (RIM) $600,966 $229,264 -$371,703 0.38
Participant Cost Test (PCT) $529,903 $572,022 $42,120 1.08
Lifecycle Revenue Impacts ($/kWh) $0.0000010154
Table 11 - Wattsmart Homes Water Heating Cost-Effectiveness Results
(Load Shape – Residential_HPWH_7P, Residential_ERWH_7P)
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.0797 $21,356 $14,297 -$7,058 0.67
Total Resource Cost Test (TRC)
No Adder $0.0797 $21,356 $12,997 -$8,358 0.61
Utility Cost Test (UCT) $0.0668 $17,913 $12,997 -$4,915 0.73
Rate Impact Test (RIM) $47,796 $12,997 -$34,798 0.27
Participant Cost Test (PCT) $15,793 $42,233 $26,440 2.67
Lifecycle Revenue Impacts ($/kWh) $0.0000005909
In addition to the energy benefits reported above, HVAC and Lighting in the Wattsmart Homes
program offer significant non-energy benefits (NEBs). Table 12 through Table 15 detail the non-
energy benefits and cost-effectiveness results.
Table 12 - Wattsmart Homes Non-Energy Benefits by Measure
Measure Name
Non-Energy
Benefits
Water
($/yr)
Non-Energy
Benefits
Other
($/yr)
Quantity Measure
Life
Total
NEBs
($/yr)
Discount
Rate
Total Net
Present
Value
Benefits
HVAC $0.00 $3.78 8 15 $30 6.92% $296.17
Lighting - General $0.00 $0.75 29,708 12 $22,281 6.92% $190,026.76
Lighting - Specialty $0.00 $0.92 4,078 12 $3,735 6.92% $31,857.45
The following tables provide the cost-effectiveness results after adding in the non-energy benefits
detailed above beginning with the overall program results.
PY2021 Idaho Cost-Effectiveness Results – Wattsmart Homes Program
April 16, 2021
Page 6 of 6
Table 13 - Wattsmart Homes Program (with NEBs) Cost-Effectiveness Results
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.0937 $1,819,757 $1,438,537 -$381,221 0.79
Total Resource Cost Test (TRC)
No Adder $0.0937 $1,819,757 $1,327,959 -$491,799 0.73
Utility Cost Test (UCT) $0.0545 $1,058,428 $1,105,778 $47,351 1.04
Rate Impact Test (RIM) $3,226,205 $1,105,778 -$2,120,427 0.34
Participant Cost Test (PCT) $1,458,662 $3,140,378 $1,681,716 2.15
Lifecycle Revenue Impacts ($/kWh) $0.0000008435
Table 14 - Wattsmart Homes HVAC (with NEBs) Cost-Effectiveness Results
(Load Shape – ID_Single_Family_Heat_Pump)
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.1004 $951,580 $619,360 -$332,220 0.65
Total Resource Cost Test (TRC)
No Adder $0.1004 $951,580 $563,081 -$388,499 0.59
Utility Cost Test (UCT) $0.0616 $583,620 $562,785 -$20,835 0.96
Rate Impact Test (RIM) $1,640,004 $562,785 -$1,077,219 0.34
Participant Cost Test (PCT) $703,900 $1,413,492 $709,592 2.01
Lifecycle Revenue Impacts ($/kWh) $0.0000025338
Table 15 - Wattsmart Homes Lighting (with NEBs) Cost-Effectiveness
(Load Shape – Residential_Lighting_7P)
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.0211 $62,760 $389,243 $326,482 6.20
Total Resource Cost Test (TRC)
No Adder $0.0211 $62,760 $374,028 $311,268 5.96
Utility Cost Test (UCT) $0.0480 $143,088 $152,144 $9,056 1.06
Rate Impact Test (RIM) $474,966 $152,144 -$322,822 0.32
Participant Cost Test (PCT) $29,910 $702,212 $672,302 23.48
Lifecycle Revenue Impacts ($/kWh) $0.0000026404
Exhibit C
Memorandum
1375 Walnut Street
Suite 100 | Boulder, CO 80302
303.728.2500 main
guidehouse.com
To: Jillian Fredrickson, PacifiCorp
From: David Basak, Guidehouse
Date: April 16, 2021
Re: Cost-Effectiveness Results for the Wattsmart Homes Program PY2022 – Idaho
Guidehouse estimated the cost-effectiveness results for the Idaho Wattsmart Homes Program, based
on 2022 costs and savings estimates provided by PacifiCorp. This memo provides the cost-
effectiveness results for the overall program and for the 6 measure categories.
Cost-effectiveness was tested using the 2019 IRP decrement for all measure categories. The
program passes the cost-effectiveness for the UCT and PCT test. The memo consists of the following
tables.
Table 1 - Wattsmart Homes Program Inputs
Table 2 – Wattsmart Homes Annual Program Costs
Table 3 – Wattsmart Homes Program – Savings by Measure Category
Table 4 - Benefit/Cost Ratios by Measure Category
Table 5 – Wattsmart Homes Program Level (without NEBs) Cost-Effectiveness Results
Table 6 - Wattsmart Homes Appliances Cost-Effectiveness Results
Table 7 - Wattsmart Homes Building Shell Cost-Effectiveness Results
Table 8 - Wattsmart Homes HVAC Cost-Effectiveness Results
Table 9 - Wattsmart Homes Lighting Cost-Effectiveness Results
Table 10 - Wattsmart Homes New Homes Cost-Effectiveness Results
Table 11 - Wattsmart Homes Water Heating Cost-Effectiveness Results
Table 12 - Wattsmart Homes Non-Energy Benefits by Measure
Table 13 - Wattsmart Homes Program (with NEBs) Cost-Effectiveness Results
Table 14 - Wattsmart Homes HVAC (with NEBs) Cost-Effectiveness Results
Table 15 - Wattsmart Homes Lighting (with NEBs) Cost-Effectiveness
PY2022 Idaho Cost-Effectiveness Results – Wattsmart Homes Program
April 16, 2021
Page 2 of 6
Table 1 - Wattsmart Homes Program Inputs
Parameter Value
Discount Rate 6.92%
Residential Line Loss 9.06%
Residential Energy Rate ($/kWh)¹ $0.1060
Inflation Rate 2.28%
¹ Future rates determined using a 2.28% annual escalator.
Table 2 – Wattsmart Homes Annual Program Costs
Measure Group Engineering
Costs
Utility
Admin
Program
Delivery
Program
Dev. Incentives Total Utility
Costs
Gross
Customer
Costs
Appliances $0 $6,141 $57,801 $0 $59,300 $123,242 $90,445
Building Shell $0 $1,752 $16,487 $0 $28,843 $47,082 $96,253
HVAC $0 $27,411 $257,985 $0 $378,228 $663,624 $634,665
Lighting $0 $0 $33,000 $0 $104,300 $137,300 $30,100
New Homes $0 $6,463 $60,824 $0 $97,794 $165,081 $529,903
Water Heating $0 $733 $6,902 $0 $15,550 $23,186 $19,830
Total $0 $42,500 $433,000 $0 $684,015 $1,159,515 $1,401,196
Table 3 – Wattsmart Homes Program – Savings by Measure Category
Measure Group Gross kWh
Savings
Realization
Rate
Adjusted
Gross kWh
Savings
Net to
Gross
Ratio
Net kWh
Savings
Measure
Life
Appliances 292,715 80% 235,065 97% 227,581 8
Building Shell 83,495 100% 83,495 91% 75,980 45
HVAC 1,306,494 99% 1,296,855 95% 1,235,923 13
Lighting 418,700 87% 364,269 74% 269,559 12
New Homes 308,028 84% 257,900 93% 239,854 32
Water Heating 34,955 100% 34,955 100% 34,955 13
Total 2,444,386 93% 2,272,538 92% 2,083,851 16
PY2022 Idaho Cost-Effectiveness Results – Wattsmart Homes Program
April 16, 2021
Page 3 of 6
Table 4 - Benefit/Cost Ratios by Measure Category
Measure Group PTRC TRC UCT RIM PCT
Appliances 0.59 0.54 0.66 0.27 2.64
Building Shell 0.91 0.83 1.86 0.42 2.15
HVAC with NEBs 0.85 0.77 1.05 0.41 1.92
HVAC 0.85 0.77 1.05 0.35 2.78
Lighting with NEBs 6.71 6.47 0.98 0.32 21.52
Lighting 2.67 2.43 0.98 0.32 16.03
New Homes 0.48 0.43 1.45 0.39 1.10
Water Heating 0.69 0.63 0.75 0.28 2.71
Total with NEBs 0.90 0.83 1.08 0.35 2.49
Total 0.77 0.70 1.08 0.35 2.38
Table 5 – Wattsmart Homes Program Level (without NEBs) Cost-Effectiveness Results
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.0849 $1,792,822 $1,382,786 -$410,035 0.77
Total Resource Cost Test (TRC)
No Adder $0.0849 $1,792,822 $1,257,079 -$535,743 0.70
Utility Cost Test (UCT) $0.0549 $1,159,515 $1,257,079 $97,563 1.08
Rate Impact Test (RIM) $3,572,505 $1,257,079 -$2,315,427 0.35
Participant Cost Test (PCT) $1,401,196 $3,328,951 $1,927,756 2.38
Lifecycle Revenue Impacts ($/kWh) $0.0000009124
Table 6 through Table 11 provides cost-effectiveness results without NEBs for all 6 measures.
Table 6 - Wattsmart Homes Appliances Cost-Effectiveness Results
(Load Shape – Residential_Dryer_7P, Residential_HPWH_7P, ID_Single_Family_Plug)
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.0973 $150,228 $89,075 -$61,153 0.59
Total Resource Cost Test (TRC)
No Adder $0.0973 $150,228 $80,978 -$69,251 0.54
Utility Cost Test (UCT) $0.0798 $123,242 $80,978 -$42,264 0.66
Rate Impact Test (RIM) $299,091 $80,978 -$218,114 0.27
Participant Cost Test (PCT) $90,445 $238,924 $148,479 2.64
Lifecycle Revenue Impacts ($/kWh) $0.0000007279
PY2022 Idaho Cost-Effectiveness Results – Wattsmart Homes Program
April 16, 2021
Page 4 of 6
Table 7 - Wattsmart Homes Building Shell Cost-Effectiveness Results
(Load Shape – ID_Single_Family_Heat_Pump)
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.0750 $105,829 $96,411 -$9,418 0.91
Total Resource Cost Test (TRC)
No Adder $0.0750 $105,829 $87,647 -$18,182 0.83
Utility Cost Test (UCT) $0.0334 $47,082 $87,647 $40,564 1.86
Rate Impact Test (RIM) $209,494 $87,647 -$121,848 0.42
Participant Cost Test (PCT) $96,253 $207,318 $111,065 2.15
Lifecycle Revenue Impacts ($/kWh) $0.0000000970
Table 8 - Wattsmart Homes HVAC Cost-Effectiveness Results
(Load Shape – ID_Single_Family_Cooling, ID_Single_Family_Heat_Pump, ID_DHP_COOL_7P)
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.0788 $901,002 $766,559 -$134,443 0.85
Total Resource Cost Test (TRC)
No Adder $0.0788 $901,002 $696,872 -$204,130 0.77
Utility Cost Test (UCT) $0.0580 $663,624 $696,872 $33,248 1.05
Rate Impact Test (RIM) $1,968,325 $696,872 -$1,271,453 0.35
Participant Cost Test (PCT) $634,665 $1,763,535 $1,128,870 2.78
Lifecycle Revenue Impacts ($/kWh) $0.0000029627
Table 9 - Wattsmart Homes Lighting Cost-Effectiveness Results
(Load Shape – Residential_Lighting_7P)
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.0225 $55,274 $147,634 $92,360 2.67
Total Resource Cost Test (TRC)
No Adder $0.0225 $55,274 $134,213 $78,939 2.43
Utility Cost Test (UCT) $0.0559 $137,300 $134,213 -$3,087 0.98
Rate Impact Test (RIM) $417,187 $134,213 -$282,974 0.32
Participant Cost Test (PCT) $30,100 $482,526 $452,426 16.03
Lifecycle Revenue Impacts ($/kWh) $0.0000022930
PY2022 Idaho Cost-Effectiveness Results – Wattsmart Homes Program
April 16, 2021
Page 5 of 6
Table 10 - Wattsmart Homes New Homes Cost-Effectiveness Results
(Load Shape – ID_Single_Family_Whole_House)
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.1405 $553,022 $264,045 -$288,977 0.48
Total Resource Cost Test (TRC)
No Adder $0.1405 $553,022 $240,041 -$312,981 0.43
Utility Cost Test (UCT) $0.0419 $165,081 $240,041 $74,960 1.45
Rate Impact Test (RIM) $616,959 $240,041 -$376,917 0.39
Participant Cost Test (PCT) $529,903 $582,835 $52,932 1.10
Lifecycle Revenue Impacts ($/kWh) $0.0000010200
Table 11 - Wattsmart Homes Water Heating Cost-Effectiveness Results
(Load Shape – Residential_HPWH_7P, Residential_ERWH_7P)
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.0818 $27,466 $19,061 -$8,404 0.69
Total Resource Cost Test (TRC)
No Adder $0.0818 $27,466 $17,329 -$10,137 0.63
Utility Cost Test (UCT) $0.0691 $23,186 $17,329 -$5,857 0.75
Rate Impact Test (RIM) $61,449 $17,329 -$44,121 0.28
Participant Cost Test (PCT) $19,830 $53,814 $33,984 2.71
Lifecycle Revenue Impacts ($/kWh) $0.0000007422
In addition to the energy benefits reported above, HVAC and Lighting in the Wattsmart Homes
program offer significant non-energy benefits (NEBs). Table 12 through Table 15 detail the non-
energy benefits and cost-effectiveness results.
Table 12 - Wattsmart Homes Non-Energy Benefits by Measure
Measure Name
Non-Energy
Benefits
Water
($/yr)
Non-Energy
Benefits
Other
($/yr)
Quantity Measure
Life
Total
NEBs
($/yr)
Discount
Rate
Total Net
Present
Value
Benefits
HVAC $0.00 $3.78 12 15 $45 6.92% $444.26
Lighting - General $0.00 $0.75 30,000 12 $22,500 6.92% $191,894.54
Lighting - Specialty $0.00 $0.92 4,000 12 $3,680 6.92% $31,385.42
The following tables provide the cost-effectiveness results after adding in the non-energy benefits
detailed above beginning with the overall program results.
PY2022 Idaho Cost-Effectiveness Results – Wattsmart Homes Program
April 16, 2021
Page 6 of 6
Table 13 - Wattsmart Homes Program (with NEBs) Cost-Effectiveness Results
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.0849 $1,792,822 $1,606,511 -$186,311 0.90
Total Resource Cost Test (TRC)
No Adder $0.0849 $1,792,822 $1,480,803 -$312,019 0.83
Utility Cost Test (UCT) $0.0549 $1,159,515 $1,257,079 $97,563 1.08
Rate Impact Test (RIM) $3,572,505 $1,257,079 -$2,315,427 0.35
Participant Cost Test (PCT) $1,401,196 $3,494,623 $2,093,427 2.49
Lifecycle Revenue Impacts ($/kWh) $0.0000009124
Table 14 - Wattsmart Homes HVAC (with NEBs) Cost-Effectiveness Results
(Load Shape – ID_Single_Family_Heat_Pump)
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.0788 $901,002 $767,003 -$133,999 0.85
Total Resource Cost Test (TRC)
No Adder $0.0788 $901,002 $697,316 -$203,686 0.77
Utility Cost Test (UCT) $0.0580 $663,624 $696,872 $33,248 1.05
Rate Impact Test (RIM) $1,682,928 $696,872 -$986,056 0.41
Participant Cost Test (PCT) $920,062 $1,763,979 $843,918 1.92
Lifecycle Revenue Impacts ($/kWh) $0.0000022977
Table 15 - Wattsmart Homes Lighting (with NEBs) Cost-Effectiveness
(Load Shape – Residential_Lighting_7P)
Cost-Effectiveness Test Levelized
$/kWh Costs Benefits Net
Benefits
Benefit/Cost
Ratio
Total Resource Cost Test (PTRC) +
Conservation Adder $0.0225 $55,274 $370,914 $315,640 6.71
Total Resource Cost Test (TRC)
No Adder $0.0225 $55,274 $357,493 $302,219 6.47
Utility Cost Test (UCT) $0.0559 $137,300 $134,213 -$3,087 0.98
Rate Impact Test (RIM) $417,187 $134,213 -$282,974 0.32
Participant Cost Test (PCT) $30,100 $647,753 $617,653 21.52
Lifecycle Revenue Impacts ($/kWh) $0.0000022930