Clean Power Alliance signs PPA for 12-MW Isabella small hydro project in California

The Clean Power Alliance (CPA) has signed three long-term power purchase agreements, including two new solar projects and one existing small hydro project.

All three projects are located in southern California and will enable CPA to meet its customers’ renewable energy demand, lower costs and comply with state renewable energy mandates, according to a press release.

“These contracts demonstrate that Clean Power Alliance’s environmental commitments are translating into high impact investments and competitive pricing for our customers, while combatting climate change,” said Diana Mahmud, Board Chair of Clean Power Alliance and South Pasadena City Councilmember.

CPA reports it has contracted all of Isabella Partners’ 12-MW Isabella hydroelectric project in Kern County, for 10 years beginning in December 2020. It has an expected output of about 48,000 MWh/year.

The first solar project contracts 233 MW from the Arlington Solar project in Riverside County, which will be owned and operated by a subsidiary of NextEra Energy Resources LLC. That project will come on-line in two phases, the first 100 MWin December 2021 and the next 133 MWin December 2022. It has an expected output of 718,220 MWh/year and a 15-year contract.


The second solar project contracts 40 MW from Clearway Energy Group’s Rosamond Solar project in Kern County, for 15 years beginning in March 2021. It has an expected output of 114,780 MWh/year.


The projects resulted from CPA’s 2018 Clean Energy Request for Offers and complement a long-term contract for the Terra-Gen-owned Voyager wind project, executed in late 2018.

CPA says its newly signed contracts follow a trend of community choice aggregation (CCA) programs across the state exercising their buying power and driving new renewable energy development. Collectively to date, California’s CCAs have signed long-term renewable energy contracts for over 2,000 MW.

CPA is a “locally operated electricity provider” in Los Angeles and Ventura counties in California, serving about 3 million customers and 1 million customer accounts. The power CPA purchases is delivered by Southern California Edison.

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