05-04-12 BPU RPT 17 - Laserfiche WebLink

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W A i £ R £H E R 6 Y L I F L RIVERSIDE PUBLIC UTILITIES Pl18LIC UTILITIES Board Memorandum BOARD OF PUBLIC UTILITIES DATE: May 4, 2012 DIRECTOR'S REPORT ITEM NO: 17 SUBJECT: MONTHLY POWER SUPPLY REPORT-- March 2012 POWER USAGE Total load requirements (including lasses) during March 2012 were 172,628 MWh and 78,442 MWh of purchases from the CAISO, of which 94,186 MWh were provided by our resources and other purchases. The retail customer load for March 2012 (151,741 MWh) was 3.9% higher than the retail customer load in March 2011 (146,102 MWh). The actual peak system demand was 287 MW, compared to actual peak system demand of 331 MW last year. Energy returns were 17,620 MWh and 2,666 MWh were attributed to losses (4.27%). Green power supplied approximately 18.41% of our retail energy requirements. The City's generation resources were available during the month as follows: UNIT OPERATION IPP: I P P units 1 and 2 operated at 48.84% capacity factor for the month. PVNGS: Palo Verde units 1, 2 and 3 operated at 72.08% capacity factor for the month. SONGS: Both SONGS units 2 and 3 operated at 0% capacity factor for the month. Hoover: 98.01% of RVSD's entitlement was met as compared to WAPA's Master Schedule (dated 6116/11), Clearwater: Clearwater's availability was 100% for the month. RERC: RERC Station (Units 1,2,3 and 4) availability was 98.84%for the month. Springs: Springs units 1, 2, 3 and 4 availability was 46.38% for the month. Salton Sea: The Salton Sea units operated at 80.42% capacity factor for the month. TRANSMISSION: Pacific DC: The South to North transmission line is currently derated to 975 MW (ETR 12131/2012) and the North to South transmission line is operational at 2,990 MW. Attached are the charts of daily peaks and the graphical comparison of demand and energy supplied from each resource for the months of March 2011 and March 2012. AA Attachments cc: Scott C. Barber, City Manager