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Home My WebLink About13 Power SupplyAgenda Item #13 TRUCKEE DONNER Public Utility District ------ - - - - -~- - - --- WORKSHOP To: From: Date: Subject: Board of Directors Stephen Hollabaugh February 17,2016 Discussion of 2015 Purchase Power Load,Resources,Peaks,and Comparison to 2015 Budget Forecast 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 2015. 2.HISTORY On September 18,2013 the workshop "FY14 and FY15 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,CARB Cap and Trade,Proposed Resources for 2014 &2015,Risk to Budget Analysis and 2014 &2015 Forecast Costs. The Purchase Power Plan 2014 and 2015 Budget was approved by the Board on November 20,2013.The 2015 Purchase Power Plan budgeted amounts,based on a forecast energy purchase of 164,729 MWh,are shown in the following table: Cost Component Budget $per MWh Total Energy Supply -Various $11,331,030 $68.79 Transmission Wheeling -SPPC $1,216,674 $7.38 Scheduling -NCPA $75,423 $0.46 Central Valley Project -WAPA $-28,012 $-0.17 Totals $12,595,115 $76.46 Historical data for 2015 and prior years to 2005 is included for reference on Attachment A. 3.NEW INFORMATION Summary budgeted versus actual amounts for 2015 are shown in the following table: Description Total Energy Purchases Total Energy Consumption,MWh Purchase Cost per MWh Budget $12,595,115 164,729 $76.46 Actual $11,509,180 152,210 $75.61 The total purchased power costs were 8.6%less than budgeted and total energy consumption was about 7.6%less than forecast during 2015.The two major factors that affect the total purchased power cost are resource cost and energy consumption by our customers.All these factors helped to reduce the District's actual purchased energy cost to $74.40 per MWh,about 2.7%under budget.The following graphs and tables are shown in Attachment B: •Budgeted vs.Actual Power Purchase Cost,2015 •Budgeted VS.Actual MWh Consumption by Month,2015 •Peak Load in MW by Month,2008 -2015 •Budgeted VS.Actual Power Sales,2002-2015 •Resource Mix by Percentages,2015 •Resource Mix in MWh Purchases,2014-2025 •CARB Cap and Trade Summary,2013-2021 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 PUO 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 District's retail sales for this calculation is equal to 140,819 -6,467 -473 =133,879 MWh. The District's estimated renewable energy portfolio performance for 2014 is shown in the table below: Eligible Renewables (per CEC) Small Hydro Landfill Gas Wind Totals RECs (MWh) 698 23,854 38,786 63,338 %Sales 0.5% 17.8% 29.0% 47.3% 4.FISCAL IMPACT Detailed budgeted versus actual amounts for 2015 are shown in the following table: I su~mary ~01 ~Budget v~A~tua~_ _I I Power Purchases,MWh Budget - -Actual- Total Energy Purchase,MWh I 164,7291 _.159,614 ~rcen~Differ~n-ce,Actual vs.Budget -_t~-I -7.6% Power Purchase Costs t B~dget -~-Actual 1_$11,331,030 $10,861,819 _0,216,6Z-4!-__$591,015 $75,423 $0---- ($28,012)$21,366 -------'-'--'--'-+.._- $0 $34,979 -r Total Energy Supply -UAMP~,yjAPA,etc Transmission -NV Energy Sched u~~~CPA WAPA costj(credit) I----- Misc Costs:WECC,WREGIS,etc. Total Power Purchase Cost--- ~O~r/(Unde~Bud~t Percent DJ!fer~nce~ctual~s.Budget ~1,509,180 (~,085,935) -8.6%------ Purchase Cost per MWh _ Percent Difference,Actual vs.Budget I----- $76.46 ---I- $75.61---_. -1.1% Peak Load Information Budget Actual ___)i§:0 ~8.0 5.6% -1-_____ _~ 5.RECOMMENDATION Receive and comment on this report. Stephen Hollabaugh Assistant General Manager Michael D.Holley General Manager Attachment A Summary Historical Energy Usage Data 2005 through 2015 Energy Purchases -MWh Delivered to Year Substations Transmission System Losses (1) Total Bulk Energy Purchased 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 149,601 154,874 154,280 150,996 156,407 154,483 153,677 156,113 154,342 153,210 142,852 2,609 3,372 3,870 3,980 4,137 4,011 4,018 4,076 4,042 4,018 3,767 159,614 158,245 158,149 154,976 160,544 158,494 157,695 160,189 158,384 157,228 146,619 Actual VS.Budgeted Energy Purchases -MWh Year Actual Budget %Difference 2015 159,614 164,729 2014 158,245 164,713 2013 158,129 163,082 2012 154,976 162,000 2011 160,544 162,000 2010 158,494 160,000 2009 157,695 163,220 2008 160,189 161,604 2007 158,384 156,963 2006 157,228 150,168 2005 146,619 145,382 3.1% 3.9% 3.0% 4.3% 0.9% 0.9% 3.4% 0.9% -0.9% -4.7% -0.9% Energy Sales,MWhYear Energy Sales to Customers -MWh Change from Previous Year,% 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 140,819 142,584 147,389 146,014 149,978 147,647 146,875 148,305 147,091 144,269 136,339 -1.24% -3.26% 0.94% -2.64% 1.58% 0.53% -0.96% 0.83% 1.96% 5.82% Distribution System Losses -MWh Year Losses (2) Delivered to Substations Losses as a %of Delivered to Subs 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 8,782 12,290 6,891 4,981 6,429 6,836 6,802 7,808 7,251 8,941 6,513 149,601 154,874 154,280 150,996 156,407 154,483 153,677 156,113 154,342 153,210 142,852 5.9% 7.9% 4.5% 3.3% 4.1% 4.4% 4.4% 5.0% 4.7% 5.8% 4.6% Notes:1 Transmission System Losses:This is the amount of MWh that NVEnergy requires the District to pay by tariff as a loss.This is defined as a fixed percentage of MWh Delivered to the District 2 Distribution System Losses:This is the difference between energy delivered to our substations and what is sold to District customers.Historically this value has been between 4%and 7%. Attachment B (2015 Budget vs Actual Charts) $14,000,000 FY15 Power Purchase Cost $12,595,11 $12,000,000 $10,000,000 •Scheduling $8,000,000 $6,000,000 •Transmission $4,000,000 •Total Energy $2,000,000 Supply $0 Budget Actual -$2,000,000 2015 Monthly Energy Consumption 20,000 18,000 16,000 14,000 M W 12,000 h 10,000 8,000 6,000 4,000 2,000 0 JAN MAR MAY JULY SEPT NOV •Budgeted •Actual Monthly Peak MW 2008 thru 2015 40.0 .2015 Peak MW 35.0 .2014 Peak MW 30.0 .2013 Peak MW 25.0 J .2012 Peak MW 20.0 2011 Peak MW 15.0 .2010 Peak MW 10.0 .2009 Peak MW 5.0 •2008 Peak MW 0.0 JAN FEB MAR APR MAY JUNE JULY AUG SEPT OCT NOV DEC 170,000 165,000 160,000 155,000 I- ~150,000 >-?145,000 ~140,000 135,000 130,000 125,000 120,000 ~Actual MWh -.&.-Budget MWh Sales MWh Wind 24%•Landfill Gas •Natural Gas •Small Hydro .Wind ~r--------.Small Hydro 3%"f"dLandfillGas.Unspeci Ie 15%Pool 2015 Resource Mix Resources (MWh)By Year 2014 -2025 with Veyo Heat Recovery 2017 & 2017-2022 Market Purchase 180,000 160,000 140,000 100,000 80,000 60,000 40,000 20,000 o ~~~~'b et-<0 et-'"~ ",<0 ",<0 ",<0 ",<0 ",'0 ",<0 •Open Position-UAM PS Pool/Mkt Veyo Heat Recovery 2017 •Horse Butte Wind - Wind •Nebo Power Plant - Natural Gas •Pleasant Valley -Wind CARB Cap and Trade Summary Utility Utility Name Type (1)2013 2014 2015 2016 2017 2018 2019 2020 2021 Truckee Donner Public Utility District POU 115,865 116,807 117,582 118,090 119,452 119,049 119,295 119,775 0 Allowance Revenue $862,563 $836,233 $965,402 ------------------ Allowances Sold 70,866 71,806 77,583 --------- --------- Revenue used for HB Wind $862,563 $836,233 $965,402 --------------- !Annual Allocation of Electrical Distribution Utilities (Allowances)