California approves two solar PPAs for BrightSource projects

California regulators have approved two power purchase agreements (PPAs) between developer BrightSource Energy and utility Southern California Edison, but turned down three others for being too expensive “relative to other thermal projects".

The deals approved by California Public Utilities Commission (PUC) were for BrightSource’s 250MW Rio Mesa 2 and 540MW Sonoran West solar thermal projects. The company will employ molten salt storage for the first time at Sonoran West, which will enable it to produce power during night hours.

The commissioners gave the go-ahead to Mesa-2 for its use of technology relating to the advancement of solar-thermal systems. Both plants could begin to generate commercial power in 2015.

“BrightSource’s technology with storage allows Southern California to optimize generation based on changing Log in to read complete article.

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