200802052007 Energy Watch,Time-of-Day Report.pdf

REG£:
eslDA~POR(B
An IDACORP Company
3~ 45
Febru 5, 2008
Ms. Jean D. Jewell, Secreta
Idao Public Utilities Commission
P. O. Box 83720
Boise,ID 83720-0074
RE: 2007 Energy Watch and Time-of-Day Programs Anual Report
Case No. IPC-E-07-05
Dear Ms. Jewell:
Enclosed please find eight copies of Idaho Power Company's Energy Watch and Time-of-
Day Programs Anual Report. Ths report is filed in compliance with Idaho Public Utilities
Commission Order No. 30292.
If you have any questions regarding ths report, please direct them to me at 388-2848 or to
Courey Waites at 388-5612.
Sincerely,~~~
Maggie Brilz V
Director, Pricing
MB
Enclosures
c: Ric Gale
Courey Waites
P&RS/Lgal files
Pricing & Regulatory Serices
Voice: 208-388-2848
Fax: [phone]
mbrilz~idahopower.com
P.O. Box 70 (83707)
1221 W. Idaho St.
Boise, ID 83702
.
.
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REef:alDA~POR(B
An IDACORP Company
P. :i"~,' 3~ 45fEB~5
Tic -E -ò? - as-
2007 ENERGY WATCH AND TIME-Of-DAY
PROGRAMS ANNUAL REPORT
february 5, 2008
Background
On April 12, 2007, the Idaho Public Utilities Commission (IPUC) approved Idaho
Power's application to continue offering on an ongoing basis two time-variant energy
pricing programs for customers with Advanced Meter Reading (AMR) capability in the
Emmett and Letha areas: the Energy Watch program and the Time-of-Day program.
These two programs were initially approved as pilot programs in March 2005 and were
authorized by the Commission to continue through April 1, 2007.
Program Descriptions
Energy Watch - The Energy Watch program is a simplified critical peak pricing program
in which customers pay a flat energy rate in June, July and August other than during
Energy Watch events, when participants pay a significantly higher rate. The Energy
Watch events can be called on up to ten weekdays between June 15 and August 15. If
called, the Energy Watch event runs between the hours of 5:00-9:00 p.m. and the
electricity rate increases to 20Ø per kWh. During all other hours, participants pay a rate
equal to the 0-300 kWh energy rate under Schedule 1.
When an Energy Watch event was called, participants were notified by telephone and/or
email by 4:00 p.m. the day preceding the Energy Watch event. The Company utilzed
live operators for the notification call for the first Energy Watch event, notifying
customers of the Energy Watch event date and times. After the initial Energy Watch
event, the Company used the autodialing system to deliver recorded messages about
the next Energy Watch events.
Time-of-Day- The Time-of-Day program has two seasons: the summer season and the
non-summer season. The summer season runs June 1 through August 31 and has
three pricing blocks. There are no time differentiated blocks for the non-summer
season.
.
The following chart outlines the time blocks and pricing used during the summer of
2007:
Time-of-Dav Program Summer Pricing 2007
Price Block Days Hours CentslWh
On-Peak Mon - Fri 1 p.m. - 9 p.m.8.3279~ / kWh
Mid.Peak Mon - Fri 7 a.m. -1 p.m.6.1 060~ / kWh
Off-Peak Mon - Fri 9 p.m. - 7 a.m.4.5145~ / kWh
Off-Peak Sat, Sun, July 4th All hours 4.5145~ / kWh
On the Time-of-Use program, customers who shift their energy consumption from the
daytime hours to the late evening and weekend hours are rewarded by paying the
lowest rate for electricity.
Program Enrollment
As of September 2007, Idaho Power had 58 customers participating in the Energy
Watch program and 86 customers participating in the Time-of-Day program. The
participation rate for summer 2007 showed a decrease of 4.6% over the 2006 summer
season. However, 80% of the customers currently enrolled in one of the programs have .
been participants since 2005 when the programs were first offered.
Program Operation
The Energy Watch and Time-of-Day programs were operated in the same way during
2007 as they were in previous years. The Company notified all program participants of
the Idaho Public Utilities Commission's approval of Idaho Power's application to
continue offering the programs on an ongoing basis in April, reminding customers of
ideas to reduce energy usage during the summer months. Likewise, in May, bill inserts
were sent to all customers living in the Emmett and Letha areas soliciting their
participatiòn in one of the programs.
The Company continues to face the challenge of the manual intervention involved when
moving a customer on or off of one of these programs. As has been noted in previous
reports, this process requires a 'virtual' meter exchange within the Company's Customer
Information System and is very time consuming for our Customer Service
Representatives. However, the Meter Data Management System (MDMS) that required
manual intervention during the 2005 and 2006 seasons passed acceptance testing in
early 2007 and successfully validated, estimated, and aggregated the hourly meter
data.
For the Energy Watch program, Idaho Power's program managers met on a daily basis
between June 15th and August 15th to analyze forecasted temperatures and system load .
or supply side issues to determine if an event would be called the next da~. The
Company called ten Energy Watch events between June 15th and August 15t. One
Page 20f9
event was called in June, six in July and three in August, with two instances of
consecutive events. The following is a list of the event days called:
JUNE JULY AUGUST
June 22no July 11th August 8m
July 12th August 14m
July 18th August 15m
July 20th
-:
July 26th
July 31sT
When an event was called; an emai! was sent by 11 a.m. to those program participants
who supplied an email åddressnotifyingthem of the next day's scheduled event. This
email also triggered the autodialing system which notified all program participants of the
upcoming Energy Watch event by telephone. The following is a summary of the results
by month of the telephone notification system that was completed by 4 p.m. on the day
preceding an Energy Watch event:
Calls Talked No Customer
Placed To Live Busy Answer Other Hung Upperson
Jun-07 99 84 5 9 1 0
85%5%9%1%0%
Calls Left Busy No Other Customer
Placed Message Answer Hung Up
Jul-07 507 378 17 41 13 58
75%3%8%3%11%
Aug-07 243 140 13 27 7 56
58%5%11%3%23%
Page 3 of9
Program Results
With the acceptance of the MDMS, Idaho Power was able to internally aggregate and
analyze customer data for the 2007 summer season. The following is a breakdown of
the results of the Energy Watch and Time-of-Day programs.
Energy Watch - In order to analyze the data of the Energy Watch customers, the
customers' aggregate hourly usage for each of the days an Energy Watch event was
called was graphed. The following chart details the load shape for the Energy Watch
customers on event days.
Energy Watch Events: 2007 Season
160
60
140
120
100
~ 80
40
20
o ~~/~~~~/~~~ ~~~~.~~~~~~~~~v' " ... '~' .' to; ~' ,," ,,; ...~ ~' ~,/" y' ,. .... .~' .' 4,' 'e' ~' 'Ç' ...oil ~~' ,+oV.:"t
22~Jun-07 Total - 11-Jul-07 Total 12-Ju1-07 Total - 18.Jul-07 Total - 2Q-Jul-07 Tota
-26-Ju~07Total. -31-Ju~07 Total -08-Aug-07 Total -14-Aug-07 Totl 15-Aug-07Total
Page 4 of9
As can be seen from this graph, customers substantially reduced their load during the
Energy Watch events.
To further analyze the data, the hourly usage for each day that an Energy Watch event
was called was compared to the hourly usage for the day before and the day after an
Energy Watch event. For those consecutive days on which Energy Watch events were
t:alled, the event day usage was compared to the usage the day before the events werecalled and the usage the day after the second event was called. Below are two event
days that illustrate these scenarios:
Energy Watch Event #7: July 31, 2007
200
180
160
140
120
$ 100'"
80
80
40
20
o ~¿~~/~~~~/~ ~~~~~~~~~~/~,v -.. ..: .'¡ \i' "" '\' '" ... ... ~. ~..y y' ,. ~. ",;' .' ... 11' '1: "i' _~. .;' ",-
"",
1-3D-JUI-07 Total-31-JuI-07 Total 01-Aug-07 Total I
Page 5 of9
Energy Watch Event #2 & #3: July 11, 2007 & July 12, 2007
160
60
140
120
100
~ 60
40
20
o ~ ~ ~f ~ ~ ~ / ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ / / , ~v' " .... '~' ",' "." ~' '\. "r" ...'" ,p' ~.."l V " .=-' ",;' ,,( ,,¡ ~' 'I,; "Ç "i' __~' 't,V
",'"
-1Q-Ju¡"07 Total -11-JuI-07 Total 12-Ju1-07 Total - 13-Jul-07 Total
Based on these results it is apparent that customers are reducing their usage during
Energy Watch events.
Time of Day - In order to analyze the data of the Time-of-Day customers, the total
weekday (excluding Independence Day) hourly energy usage for the Time-of-Day
customers during the 2007 summer season by month was totaled. The chart below
shoes the total weekday usage by hour for each of the three summer months.
Page 6 of9
~5,000
4,500
4,000
3,500
3,000
.=
==2,500'"
2,000
1,500
1,000
500
Time of Day: 2007 Season
~~~ ~ ~ ~~ ~ ~ ~ ~ ~ ~~~ ~ ~ ~~ ~ ~ ~ ~~
..ii/ ..' 'I.: ~' ti: ~' ~' "\' fb' Cb.'" c:/' _""... "q,' ,,' fl' i:' \)' ~' to' ,,' i'" a/.. 'V'" ...:.... ~- .. ..
....
I-June Weekday Total -July Weekday Total August Weekday Total I
To evaluate what impact, if any, the Time-of-Day rates had on customers' usage
patterns during on-peak periods, the hourly usage data was grouped by on-peak, mid-
peak and off-peak time periods and compared with the percent of energy consumed
during each of those periods, by month. Below is a summary of that data for 2007
weekdays (excluding Independence Day).
Page 7 of9
Time of Day Usage by Time Period
Of-Peak
Mid-Peak
On-Peak
0.0%5.0%10.0%15.0%20.0%25.0%30.0%35.0%40.0%45.0%50.0%
I II June Weekday Total .JulyWeekdayTotal OAugust WeedayTotal!
A comparison of the total 2007 summer usage by time period to the on-peak, mid-peak,
and off-peak total 2006 summer usage was made to identify any changes in overall
usage patterns. The chart below summarizes the percent of total use by time period by
year.
Period 2006 2007
June
On-Peak .21.6%27.7%
Mid-Peak -17.7%.16.7%
Off-Peak 60.8%55.6%
Julv
On-Reak 20.7%28.9%
Mid-Peak 14.2%14.9%
Off-Peak /65.1%56.2%
AUQust
On-Peak 22.8%31.1%
Mid-Peak 16.7%17.1%
Off-Peak 60.5%51.8%
Page 8 of9
When compared to the total summer season time period usage in 2006, the 2007 time
period usage shows a slight shift of off-peak usage to on-peak usage but continues to
be consistent with the previous year's data. See below.
2007 VS. 2006 Time Period Usage
10.0%
0.0%
On.Peak Mid.Peak Of-Peak
1-2007 -20061
Future of the Energy Watch and Time-of-Day Programs
The Energy Watch and Time-of-Day programs continue to provide the Company with
valuable information regarding customers' responses to time-variant pricing. It is
apparent by the continued participation of customers that they are satisfied with both the
Energy Watch and Time-of-Day programs. Consistent with the findings from previous
analyses, Energy Watch program participants appear to reduce load during the Energy
Watch events while the Time-of-Day program participants appear to not engage in load
shifting. The Company's objectives for the 2008 season are to better educate
customers on ways to reduce usage during high cost time periods as well as to increase
participation in both the Energy Watch and Time-of-Day programs.
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