HomeMy WebLinkAbout10-Discussion of 2013 Purchase Power Load, Resources, Peaks, and Comparison to 2013 Budget ForecastAgenda Item #10
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From:
Date:
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Board of Directors
Stephen Hollabaugh
February 05, 2014
Discussion of 2013 Purchase Power Load, Resources, Peaks, and
Comparison to 2013 Budget Forecast
WORKSHOP
1. WHY THIS MATTER IS BEFORE THE BOARD
This workshop is to review the District’s actual versus budgeted purchase power costs
and energy consumption for 2013.
2. HISTORY
On October 5, 2011 the workshop "FY12 and FY13 Budget: Purchase Power Plan"
was presented to the Board. This workshop covered the following topics: Mission
Statement and Objectives, Renewable Portfolio Standard Target, Conservation as
First Resource, Diversified Power Supply Plan, Future Renewable Resources,
Proposed Resources for 2013, Risk to Budget Analysis and 2013 Forecast Costs.
The Purchase Power Plan 2013 Budget was approved by the Board on November 16,
2011. The 2013 Purchase Power Plan budgeted amounts, based on a forecasted
energy purchase of 163,082 MWh, are shown in the following table:
Cost Component Budget $ per MWh
Total Energy Supply - Various $10,737,570 $65.84
Transmission Wheeling - SPPC $ 1,081,033 $ 6.63
Scheduling - NCPA $ 73,226 $ 0.45
Central Valley Project - WAPA $ -28,012 $ -0.17
Totals $11,863,817 $72.75
Historical data for 2013 and prior years to 2005 is included for reference on
Attachment A.
3. NEW INFORMATION
Summary budgeted versus actual amounts for 2013 are shown in the following table:
Description Budget Actual
Total Energy Purchases $11,863,817 $11,647,321
Total Energy Consumption, MWh 163,082 158,149
Purchase Cost per MWh $72.75 $73.65
• The total purchased power costs were 1.8% less than budgeted and total
energy consumption was about 3.0% less than forecasted during 2013. The
two major factors that affect the total purchased power cost are resource
cost and energy consumption by our customers. While the forecasted
energy consumption value of 163,082 MWh was close (within 2%) to the
actual amount, the resource cost was much less than budgeted.
All these factors helped to reduce the District's actual purchased energy cost to $73.65
per MWh, about 0.3% over budget. Energy costs and consumption by month are
graphically depicted below.
Budgeted versus actual power purchase cost for 2013 is shown in graph below:
$10,737,570 $10,847,086
$1,081,033 $867,550
‐$2,000,000
$0
$2,000,000
$4,000,000
$6,000,000
$8,000,000
$10,000,000
$12,000,000
$14,000,000
Budget Actual
FY13 Pow er Purchase Cost
Scheduling
Transm ission
Total Energy Supply
$11,647,321$11,863,817
Budgeted versus actual monthly MWh consumption for 2013 is shown in graph below:
0
2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
18,000
20,000
JAN FEB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC
Budgeted
Actual
2013 Monthly Energy Consumption
MWh
M
W
h
The Mont hl y Peak M W f or 2008 t hr ough 2013 i s s ho wn in the graph below:
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
JAN FEB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC
Monthly Peak MW
2008, 2009, 2010, 2011, 2012,2013
2013 Peak MW
2012 Peak MW
2011 Peak MW
2010 Peak MW
2009 Peak MW
2008 Peak MW
J JU JU UG S OC O C
The District experienced its peak load of 31.5 MW in December. The summer months
have a constant load with a small peak in July.
On December 7, 2011 the Board approved the Renewable Energy Resources
Procurement Plan per Senate bill 1x2. This plan defines the minimum required
percentage of renewables per compliance period based on total retail energy sales.
Compliance periods and percent renewables are as follows:
Period 1 - January 1, 2011 through December 31, 2013 - 20%
Period 2 - January 1, 2014 through December 31, 2016 - 25%
Period 3 - January 1, 2017 through December 31, 2020 - 33%
Section 3201 (bb) of the CEC regulations define retail sales as: "Sale of electricity by
a PUD to end-use-customers and their tenants, measured in MWh. This does not
include energy consumption by a POU, electricity used by a POU for water pumping,
or electricity produced for onsite consumption (self-generation)." Therefore the retail
sales for this calculation is equal to 147389-8195-499=138,695 MWh
The District's estimated renewable energy portfolio performance for 2013 is shown in
the table below:
Eligible Renewables (CPUC) MWh REC's % Sales
Small Hydro 4,477 3.2%
Landfill Gas 21,240 15.3%
Wind 34,995 25.2%
Solar 0 0.0%
Totals 61,078 43.8 %
4. FISCAL IMPACT
Detailed budgeted versus actual amounts for 2013 are shown in the following table:
Power Purchases, MWh Budget Actual
Total Energy Purchase, MWh 163,082 158,149
Percent Difference, Actual vs. Budget ‐3.02%
Power Purchase Costs Budget Actual
Total Energy Supply ‐ UAMPS, WAPA, etc $10,737,570 $10,847,086
Transmission ‐ NV Energy $1,081,033 $867,550
Scheduling ‐ NCPA $73,226 $67,753
WAPA cost/(credit) ($28,012) ($141,713)
NCPA Power Purchase $1,612
Misc Costs: WECC, WREGIS, etc. $5,033
Total Power Purchase Cost $ 11,863,817 $ 11,647,321
$ Over/(Under) Budget $ (216,496)
Percent Difference, Actual vs. Budget ‐1.82%
Purchase Cost per MWh $72.75 $73.65
Percent Difference, Actual vs. Budget ‐0.29%
Peak Load Information Budget Actual
District Peak Load, MW 36 31
Percent Difference, Actual vs. Budget ‐12.62%
Stephen Hollabaugh Michael D. Holley
Assistant General Manager General Manager
5. RECOMMENDATION
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