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W A T E R I E N E R C Y I L I F E <br /> RIVERSIDE PUBLIC UTILITIES <br /> „ „ , , Board Memorandum <br /> BOARD OF PUBLIC UTILITIES DATE: June 4, 2010 <br /> DIRECTOR'S REPORT <br /> ITEM NO: 17 <br /> SUBJECT: MONTHLY POWER SUPPLY REPORT—April 2010 <br /> POWER USAGE <br /> Total energy requirements during April 2010 were 166,522 MWh, of which 152,016 MWh were attributed to retail <br /> customer load and the remainder being sales to wholesale parties and system losses. The retail load for April 2010 was <br /> 6.2% lower than the retail energy load in April 2009 (162,056 MWh). The actual peak system demand was 285 MW, <br /> compared to actual peak system demand of 423 MW last year. Sales to wholesale parties, losses and energy returns <br /> represented 9.5% of the total energy requirement as compared to 21.1% for last year. Sales to wholesale parties <br /> accounted for 4,232 MWh, which included 4,097 MWh in sales to the ISO. Energy returns were 5,611 MWh and 4,663 <br /> MWh were attributed to losses (3.78%). Green power supplied approximately 17.6% of our retail energy requirements. <br /> The City's generation resources were available during the month as follows: <br /> UNIT OPERATION <br /> IPP: IPP units 1 and 2 operated at 96% capacity factor for the month. <br /> PVNGS: Palo Verde units 2 and 3 operated at 75% capacity factor for the month. Palo Verde Unit 1 is on <br /> refueling outage through 5/24/10. <br /> SONGS: SONGS unit 2 & 3 operated at 58% &51% capacity factor respectively for the month. <br /> Hoover: Hoover operated at 74% availability for the month due to low water elevation in Lake Mead and various <br /> scheduled unit maintenances. <br /> Springs: Springs units 1, 2, 3 and 4 availability was 100% for the month. <br /> RERC: RERC Unit 1 availability was 99.6% for the month. <br /> RERC Unit 2 availability was 1.9% for the month due to turbine overhaul through 5/14/2010. <br /> Salton Sea: The Salton Sea units operated at 69% capacity factor for the month. <br /> TRANSMISSION: <br /> Pacific DC: The South to North line is de-rated due to repairs to damage caused by the Station Fire through <br /> 05/30/2010. The North to South line is fully operational. <br /> Attached are the charts of daily peaks and the graphical comparison of demand and energy supplied from each resource <br /> for the months of April 2009 and April 2010. <br /> AA <br /> Attachments <br /> cc: Bradley J. Hudson, City Manager <br />