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CITY OF UKIAH I HYDROELECTRIC GENERATION IT'S THE LITTLE THINGS THAT COUNT The broad In April of 2007 the plant was re-commissioned and definition of NCPA's mission is to build and oper- began producing valuable,clean, renewable energy ate power plants, purchase power, coordinate and for the first time in nearly 10 years. The plant will manage wholesale power, and provide legislative produce approximately 15,000 megawatt hours an- and regulatory representation for its members— in nually, more than 10% of the City's annual energy short,to provide service. Not included in this broad use. The renewable energy generated reduces the definition are the many little extras that NCPA City's market power purchases, thereby reducing continuously provides that truly exemplify NCPA's the City's carbon footprint. The resulting savings commitment to member service. can be used to pay a significant portion of the proj- The City of Ukiah's Lake Mendocino Hydroelectric Power Plant is a prime case study for NCPA's service commitment. Ukiah constructed a 3.5 megawattIt's �(MW) hydroelectric plant at the base of Coyote Dam on Lake Mendocino in 1986. The plant had a prob- lematic operating history for the next 12 years until, in 1998, it was forced to cease operations altogether what Odue to changes in Russian River flow requirements. These changes resulted from steelhead trout and Chi- nook salmon being placed on the endangered species list. While plant operations were discontinued, $2.2 lookat that million annual debt service payments continued, cre- ating a tremendous fiscal burden for the City. In 2005, the City requested assistance from NCPA to help implementdesign modifications and necessary matters equipment refurbishmentto allow the plant to resume operation. NCPA's Generation Services team pro- cured the required regulatory approvals, preliminary it 's what design estimates and budgetary quotes to accomplish the refurbishment project. The Power Management team evaluated the economics of the project. Generation Services managed t the engineering and re- you s re- furbishment contracts for the project,which included: • Redesign and construction of the Tainter diver- sion valve • Overhaul and testing of the turbine generators ect's annual debt service. Improved water supply • Upgrades to the protective relays reliability to the adjacent hatchery helps ensure that • Upgrades to the supervisory control system the endangered steelhead continue to thrive in the • Upgrades to the water supply equipment for the Russian River. adjacent Department of Fish and Game steel- head trout hatchery NCPA is proud to have been able to help the City of Ukiah achieve its goals for the Lake Mendocino Remote operation of the generator and river flow Hydroelectric Power Plant. This project serves as a control and power scheduling functions were shift- reminder that little efforts add up to big successes. ed to the NCPA Dispatch Center.