SunEdison signs solar purchase agreement with Riverside, California

SunEdison, a unit of MEMC Electronic Materials, signed a new 25-year power purchase agreement (PPA) to deliver 20 MW to Riverside Public Utilities, the municipal electric utility of the city of Riverside, California.

SunEdison will construct the 20 MW North Lake I Solar plant on previously disturbed land owned by the Metropolitan Water District near the Diamond Valley Lake reservoir in western Riverside County.

The project is expected to deliver renewable energy and reduce the need for costly transmission upgrades due to its proximity to load centers, including the RPU service territory.

Riverside is among the first of California’s municipal utilities to enter into a utility-scale solar contract of this size. Under Senate Bill X 1-2, California extended its renewable portfolio standards (RPS) program goal to 33 percent and included publicly-owned utilities such as Riverside.

In addition to the contract from RPU, SunEdison also was awarded 3 PPAs totaling 48 MW by Southern California Edison (SCE) and one 18.5 MW PPA by San Diego Gas and Electric (SDG&E) under the Renewable Auction Mechanism program.

The California Public Utilities Commission (CPUC) approved the SCE contracts effective October 31, 2012 and is currently reviewing the SDG&E contract. The RAM program requires that projects start operating 24 months after CPUC approval.

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The Clarion Energy Content Team is made up of editors from various publications, including POWERGRID International, Power Engineering, Renewable Energy World, Hydro Review, Smart Energy International, and Power Engineering International. Contact the content lead for this publication at

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