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SFPUC staff present micro-hydro turbine pilot to capture wasted hydraulic energy
Summary
SFPUC staff proposed a pilot to test micro-hydro turbines that would convert hydraulic energy lost through valves into electricity, starting at University Mound South Reservoir; commissioners signaled support but were told scaling would require added staff and funding.
San Francisco Public Utilities Commission staff outlined a plan to pilot micro-hydro turbines that could convert hydraulic energy lost through pressure-regulating and throttling valves into usable power.
Tony Irons, speaking during the general manager's report, introduced the topic and said staff would bring forward details if the pilot proved feasible. City distribution division staff members Paul Ito and Don Lampe said the division believes it has the technical knowledge and resources to maintain, possibly install and operate a pilot project. “Converting this wasted energy into usable power without adversely affecting the delivery of water to our consumers appears to be possible through the use of micro hydro turbines,” a distribution-division representative told the Commission.
Staff identified the University Mound South Reservoir as the first pilot site and said the pilot would be followed by feasibility assessment to decide whether to expand the program. Commission members expressed broad support for the concept but were reminded that a more aggressive program would require additional staff, funding and administrative support.
Next steps: staff will pursue a limited pilot and return to the Commission with feasibility results and any requests for additional resources if the pilot is successful.
