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Return to Previous PageTacoma Power’s Mossyrock Dam up for renewable energy award

By Staff
The East County Journal

Tacoma Power’s project to rebuild two generators at Mossyrock Dam stands out as a top renewable energy project and is a finalist for the Utility Scale Renewables Award from and Renewable Energy World magazine.

The publication’s audiences and utility customers will select the “Readers’ Choice” winner.

The Utility Scale Renewables Award recognizes projects, technologies or prorams that represent a renewable energy program for customers, an innovative project or a technology that allows utility-sized projects to improve performance. Four other utilities were named as finalists for the award.

This $50 million Mossyrock Hydro Rebuild Project includes replacing the turbine runners, wicket gates and transformers and rebuilding the generators for two, 150-megawatt hydroelectric generating units that Tacoma Power originally put into service in 1968.

The new, stainless steel runners, along with the other improvements, will provide approximately 3 percent more energy with the same amount of water – enough to serve about 2,5000 additional northwest homes with clean, renewable hydroelectric energy.

Winners will be announced at the Renewable Energy World North America Conference and Expo, which will take place in Austin, Texas from Feb. 23 to Feb. 25. Voting for the “Readers’ Choice” closes Jan. 31. People interested in supporting Tacoma Power can visit to vote for the Mossyrock Hydro Rebuild Project.

About Mossyrock Dam

Completed in 1968, Mossyrock Dam stands 606 feet from bedrock and is Washington’s tallest dam. It produces enough electricity to serve more than 78,000 Northwest homes. The double curvature concrete arch dam has three penstocks between 248 and 285 feet in length that extend down to the pwoerhouse, which is adjacent to the base of the dam. The powerhouse contains two turbine generators and has room for a third.

About Tacoma Power

Tacoma Power serves 168,000 customers in Tacoma, University Place, Fircrest and portions of Fife, Lakewood, Federal Way, Steilacoom, Fort Lewis, McChord Air Force Base and other portions of Pierce County. The utility includes five divisions: Transmission and Distribution, Generation, Rates, Planning and Analysis, Power Management and Click! Network

The East County Journal
Morton, WA
January 20, 2010

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