Grid Scale, Microgrids, News, Storage

California CCAs issue RFO for up to 500 MWs of long-duration storage

Solar Panels with Clouds

Today, eight Community Choice Aggregators (CCAs) launched a joint Request for Offers (RFO) to procure up to 500 megawatts (MWs) of long-duration storage that can come online before 2026. The RFO is seeking a minimum 10-year contract for grid-charged technologies and the CCAs looking for the technology are below.

  • Central Coast Community Energy,
  • CleanPowerSF,
  • Marin Clean Energy,
  • Peninsula Clean Energy,
  • Redwood Coast Energy Authority,
  • San José Clean Energy,
  • Silicon Valley Clean Energy, and
  • Sonoma Clean Power

Long-duration storage provides grid resiliency to support higher concentrations of renewable energy on the grid. Similar to battery storage today, which helps provide energy during a few evening hours when solar stops producing, long-duration storage should be able to charge from the grid when renewable resources are at their peak, and discharge for periods of 8-16 hours when renewable production is lower. 

The addition of long-duration storage to the CCA portfolios will aid renewable integration on the grid while advancing California’s greenhouse gas reduction targets for 2030. Long-duration storage technologies are a needed solution to provide grid reliability as California transitions away from fossil fuel plants. Earlier in 2020 the Joint CCAs issued a Request for Information for long-duration storage and received more than 58 project entries with 14 different technologies, signaling significant supplier interest.

“By working together, the eight CCAs are able to procure large-scale projects that would be challenging for one CCA to procure on its own,” said Girish Balachandran, Silicon Valley Clean Energy’s CEO. “Collaborating on this long-duration storage solution allows the CCAs to manage financial and technology risks while still diversifying portfolios with cost-effective and innovative resources.”

“CCAs are the leaders when it comes to advancing new clean energy resources in California, having already signed long-term contracts totaling more than 5,000 megawatts with a diverse mix of new-build renewable energy facilities throughout the state,” said Beth Vaughan, executive director of the California Community Choice Association (CalCCA). “Now CCAs are acting fast to secure the reliability resources that are needed to support a more resilient power system.” 

The RFO can be found here. Proposals are due by December 1, 2020.


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