20091123_2771.pdf

DECISION MEMORANDUM
TO:CO MMISSI 0 NER KEMPTON
COMMISSIONER SMITH
COMMISSIONER REDFORD
COMMISSION SECRETARY
LEGAL
WORKING FILE
FROM:T J GOLO
BRYAN LANSPERY
DATE:NOVEMBER 20, 2009
RE:ROCKY MOUNTAIN POWER TARIFF ADVICE NO. 09-05; UPDATE
SCHEDULE 72A
BACKGROUND
On October 28 2009, Rocky Mountain Power ("Company ) filed Tariff Advice No. 09-
containing proposed revisions to the Company s Tariff Schedule 72A - Dispatchable Irrigation
Load Control Credit Rider Program ("Program ). The purpose ofthe filing is to incorporate
minor modifications to the Tariff Schedule 72A agreed to by the Company and the Idaho
Irrigation Pumper s Association ("lIP A"). The current tariff agreement for the load control
service credit ended after the 2009 irrigation season. The Company and lIP A representatives met
on October 6 2009, to negotiate a new agreement and the parties successfully negotiated a three-
year agreement for 2010 through 2012 irrigation season.
ST AFF ANALYSIS
Staff reviewed the proposed revisions to Rocky Mountain Power s Schedule 72A-
Dispatchable Irrigation Load Control Credit Rider Program. The proposed revisions are as
follows:
Sheet No. 72A.l - Revise the seasonal period for the dispatch program from June 1 to
September 15 to a proposed period of June 1 to August 31
Sheet No. 72A.2 - Extend the participation schedule for the 2008 and 2009 seasons
through the end of the 2012 irrigation season
DECISION MEMORANDUM - 1 -NOVEMBER 20 , 2009
Sheet No. 72A.3 - Revise the dispatch hours from 2:00 pm to 8:00 pm to the proposed
period of 11 :00 am to 7:00 pm. The change in times will help facilitate phasing in and out
of dispatch events as well as provide additional time to the pumpers to check their
irrigation system before it gets dark.
Staff believes that these revisions represent the mutual interests of both the Company and lIP A
while leaving what has been a successful Demand-Side Resource unharmed. There are limited
number of hours available for interruption in the season. The Company has indicated that in the
past two years, interruptions will have more value in the months of June, July or August than in
the month of September. Therefore, Staff agrees that shortening the Program s season to the end
of August still allows the Company to call on Irrigators when the Program can provide the
greatest benefits (namely in July and August) for Idaho and the Company s system as a whole.
Staff notes that the Participation Credit incentive rates will remain at the same level as last season.
STAFF RECOMMENDATION
Staff recommends Commission approval of the proposed modifications to Rocky
Mountain Power s Schedule 72A with an effective date of December 31 , 2009.
COMMISSION DECISION
Does the Commission accept the proposed modifications to Rocky Mountain Power
Schedule 72A - Dispatchable Load Control Service Credit Rider Program?
i:udmemos/nnp ta no. 09-05.doc
DECISION MEMORANDUM - 2 -NOVEMBER 20, 2009