City to create energy from water pressure

Mayor Gavin Newsom offered a thumbs-up today regarding a plan to build a 200-kilowatt hydroelectric plant at a Portola District reservoir.

The project is the first in San Francisco to generate clean energy from excess, previously untapped water pressure in The City’s water distribution system, the Mayor’s Office said in a release.

The plant will be built at the University Mound Reservoir, which provides drinking water to eastern districts of The City including the Marina, South of Market and Treasure and Yerba Buena islands, it said.

The reservoir is currently undergoing a major seismic retrofit.

Energy from water pressure will essentially derive from good ole gravity, which causes water to flow through two pipes into University Mound’s two reservoir basins, the mayor’s statement said.

“Excess water pressure exists in these two flow lines, beyond what is needed to reliably and safely deliver the water into the reservoir basins,” it said.

The hydroelectric plant is slated to operate in 2012, initially producing electricity at 10 cents per kilowatt/hour, the Mayor’s Office said.
 
“However, after financing of the project is paid off, the plant will be capable of producing energy at roughly 3-to-4 cents per kilowatt/hour, making the project an invaluable investment from an energy-cost perspective,” it said.

It will be funded with $2.5 million-worth of Clean Renewable Energy Bonds awarded recently to the San Francisco Public Utilities Commission, Newsom’s office said.

The mayor, who hasn’t been chatting directly with the media lately, offered this comment in a press release:

“Small hydro-electric projects like this are affordable, neighborhood-friendly and represent simple but creative engineering at its best.”

 

Bay Area NewsenergynewsomUnder the Dome

If you find our journalism valuable and relevant, please consider joining our Examiner membership program.
Find out more at www.sfexaminer.com/join/

Just Posted

District Attorney Chesa Boudin announces charges against former SFPD Officer Christopher Samoyoa in the 2017 fatal shooting of Keita O’Neill at a press conference outside the Hall of Justice on Monday, Nov. 23, 2020. (Kevin N. Hume/S.F. Examiner)
DA Boudin charges fired SFPD officer with manslaughter over fatal shooting

Ex-Officer Christopher Samayoa to face criminal charges in killing of Keita O’Neil

The area near the Castro Muni Metro Station is expected to be affected by construction work on the Twin Peaks Tunnel, with lane closures on Market Street and some loss of parking. (Kevin N. Hume/S.F. Examiner)
Construction on Twin Peaks Tunnel to begin November 30

Area around Castro Muni Station will see greatest impacts including lane closures on Market Street

(Genaro Molina/Pool/Los Angeles Times/TNS)
Newsom calls latest surge of COVID-19 cases ‘unprecendented’

By Eli Walsh Bay City News Foundation California’s latest surge of COVID-19… Continue reading

Dr. Barbara Ferrer, director of the Los Angeles County Department of Public Health, during a news conference on March 10, 2020. (Myung J. Chun/Los Angeles Times/TNS)
LA County suspends outdoor dining at restaurants as coronavirus surges

By Alex Wigglesworth Los Angeles Times Los Angeles County public health officials… Continue reading

Renderings of the main entrance to upcoming Mission Bay elementary school on Owens Street. (Courtesy photo)
SFUSD offers first look at planned Mission Bay elementary school

San Francisco school officials this month unveiled the design of a planned… Continue reading

Most Read