HomeMy WebLinkAbout13 Purchase Power Ag enda Item # 13
ANIMEMPT
Public Utility District
FF
WORKSHOP
To: Board of Directors
From: Stephen Hollabaugh
Date: February 03, 2010
Subject: Discussion of 2009 Purchase Power Load, Resources, Peaks,
Comparison to 2009 Budget Forecast
1. WHY THIS MATTER IS BEFORE THE BOARD
This item involves a summary of the 2009 Purchase Power including Load,
Resources, Peak and comparison of Budget Forecast to Actual.
2. HISTORY
On September 3, 2008 the Board was presented the "Purchase Power Plan - 2009
Budget Review". This included the Mission Statement and Objectives, Renewable
Portfolio Standard (RPS) Target, Conservation as First Resource, Diversified Power
Supply Plan, Future Renewable Resources, Proposed Resources for 2009, Risk to
Budget and 2009 forecast cost.
The Purchase Power Plan 2009 Budget was approved by the Board on November 5,
2008. The Purchase Power Budget by category and $/MWh is listed in the table
below:
2009 BUDGET
BUDGET
Purchased Power Costs 2009 1$/MWh
Total Energy Supply-Various $ 10,307,465 $ 63.2
Transmission -Sierra Pacific Power Company $ 1,043,766 $ 6.4
Scheduling - NCPA $ 61,200 $ 0.4
Power Supply Costs from Market Purchases (NCPA) $ - $ -
WAPA cost/(credit)toward MWh $ (130,396) $ (0.8)
Total Delivered Cost$/MWh $ 69.1
Total Bulk Power Costs $ 11,282,034
Total Annual MWh 163,220
When reviewing purchased power/budget actuals the following terms are used to
define where the KWh are being measured:
MWh Sold: This is the amount measured and sold at the customers meter. This is
the cash register of the Electric Utility.
MWh Received: This is the amount of MWh measured at the District's substations.
Transmission Losses (TX Losses): This is the amount of MWh the transmission
provider (NV Energy) requires by tariff as loss. This is usually a percentage of KWh
received.
Total Bulk Power: The amount of MWh received plus transmission losses. This is the
amount if MWh that is within the Purchase Power Budget.
Distribution System Losses: This is the percent difference between MWh Sold and
MWh received. Historically this has been just under 5%.
Purchased Power, Historical Actual Data:
Year MWh Received TX Losses (MWh) Total Bulk Power MWh
2011 157,873 4,127 162,000 Forecast
2010 155,924 4,076 160,000 Forecast
2009 153,677 4,018 157,695 Actuals
2008 156,113 4,076 160,189 Actuals
2007 154,342 4,042 158,384 Actuals
2006 153,210 4,018 1571228 Actuals
2005 142,852 3,767 146,619 Actuals
Total Bulk Power, Actual vs Budget MWh
Year Actual MWh Budget MWh % Difference
2009 157,695 163,220 3.4%
2008 160,189 161,604 0.9%
2007 158,384 156,963 -0.9%
2006 1571228 150,168 -4.7%
2005 146,619 145,382 -0.9%
% Distribution System Losses
% Distribution
Year MWh Sold System Losses
2009 146,875 4.6%
2008 148,305 5.3%
2007 147,091 4.9%
2006 1441269 6.2%
2005 136,339 4.8%
MWh Sold, Cash Register of Electric Utility
Year MWh Sold %Change
2009 146,875 -0.97%
2008 148,305 0.82%
2007 147,091 1.92%
2006 144,269 5.50%
2005 136,339 -----
3. NEW INFORMATION
All actuals for December 2009 have not been received. Preliminary data for
December 2009 is being used but will be verified prior to Board meeting.
The 2009 comparison of Budget vs Actual is shown in the table below:
Truckee Donner Public Utility District 2009 Budget vs Actual
Purchased Power
2009 2009
Actual Budget
Load Data
Total Load -MWH (including transmission losses) 157,695 163,220
Peak MW 35.9
Total Load -MWH %Actual ---Above or(below)Budget -3.4%
I
Purchases (All in MW)
Total Schedule All MWH Purchases-from All Suppliers 157,695 163,220
Expenditures
Total Energy Supply-UAMPS,WAPA,Geo, etc $9,016,433 $10,307,465
Transmission -SPPCo. $871,818 $1,043,766
Scheduling -NCPA $67,879 $61,200
NC PA Power Supply(MWh) - Pd from WAPA NCPA
WAPA cost/(credit)toward MWh's $160,749 ($130,3%)
WAPA(credit)used toward purchased power
Total Expenditures $10,116,879 $11,282,034
$over/(Under) Budget ($1,165,155)
%over/(Under) Budget . 3.tF,
Total Unit Cost of Purchased Power$/MWh $64.15 $69.12
%over/(Under) Budget(Unit Cost) -.7.19%
The two major factors that affect Purchased Power are consumption and cost. The
consumption of MWh in 2009 was 3.4% less than budgeted. The total unit cost of the
power purchased was 7.19% less than budgeted. This was due to the actual resource
mix vs. budgeted resource mix and the lower than forecasted natural gas prices. The
natural gas prices also reflected in a lower market price and a lower UAMPS pool
price. These items taken together make up the most of the 7.19% lower unit cost
compared to the forecast budget.
4. FISCAL IMPACT
This is a workshop and there is no financial impact for this item.
5. RECOMMENDATION
Receive and comment on this report.
P,-2, Cam,
Stephen Hollabaugh Michael D. Holley
Assistant General Manager General Manager