PG&E proposes 6.4 GWh of stand-alone energy storage in first phase of battery portfolio boost

California utility Pacific Gas and Electric Company (PG&E) has announced it plans to install nine new energy storage projects totaling 1,600 MW (6,400 MWh), including the 350 MW expansion of Moss Landing Energy Storage Facility. If approved by the California Public Utilities Commission (CPUC), these nine projects would bring the total capacity of PG&E’s battery energy storage system to more than 3,330 MW by 2024.

“As we work year-round to strengthen our electrical system, we are also planning, engineering and building the power grid for a future where the power of solar energy plus storage is harnessed on an unprecedented scale. We are committed to providing reliable and clean energy safely in a way that delivers the greatest value to our customers. And we know we can’t do it alone. We welcome continued partnerships with the best and brightest to help realize California’s clean energy future,” said Joe Bentley, Senior Vice President, Electric Engineering, PG&E.

The nine project agreements are the result of a competitive quote request (RFO) PG&E Launched to Purchase Power Resources Ordered by the CPUCs Decision June 2021 directing all load-serving entities (LSEs) in California — including investor-owned California utilities such as PG&E — to collectively procure 11.5 GW of new power sources.

The energy would come online between 2023 and 2026 to support California’s greenhouse gas (GHG) reduction policies and to replace electricity generation with the expected retirement of natural gas plants in Southern California and PG&E’s Diablo Canyon Power Plant (DCPP) .

In total, PG&E is responsible for purchasing at least 2,302 MW to supply energy to the grid between 2023 and 2026. PG&E will launch another (phase two) competitive bid later this year for sources to supply energy by June 1, 2025 and June 1, 2026.

The nine projects announced today and listed below all feature energy storage technology using lithium-ion batteries, each with a four-hour discharge time. PG&E has 15-year Resource Adequacy agreements for each of the following projects:

  • Beaumont ESS I (Terra-Gen) – 100 MW stand-alone, transmission-connected battery energy storage resource in Beaumont, California (Riverside County) and scheduled to be online by August 2023.
  • Edwards Sanborn ESS I (Terra-Gen) – 169-MW stand-alone, transmission-connected battery energy storage resource in Mojave, California (Kern County) and scheduled to be online in August 2023.
  • Canyon Country ESS I (Terra-Gen) – 80 MW stand-alone, transmission-connected battery energy storage resource in Santa Clarita, California (Los Angeles County) and is expected to be online in October 2023.
  • Moss Landing Energy Storage 3 (Vistra) – 350 MW stand-alone, transmission-connected battery energy storage resource in Monterey County, California, Moss Landing and scheduled to be online by August 2023.
  • Poblano Energy Storage (Strata Clean Energy) – 100 MW stand-alone, transmission-connected battery energy storage resource in Rialto, California (San Bernardino County) and scheduled to be online by April 2024.
  • Corby Energy Storage (NextEra Energy) – 125 MW stand-alone, transmission-connected battery energy storage resource in Vacaville, California (Solano County) and scheduled to be online by June 2024.
  • Koala Energy Storage (NextEra Energy) – 275 MW stand-alone, transmission-connected battery energy storage resource in Tracy, California (Alameda County) and scheduled to be online by June 2024.
  • Nighthawk Energy Storage (Arevon Energy) – 300 MW stand-alone, transmission-connected battery energy storage resource in Poway, California (San Diego County) and, pending required local approvals, is scheduled to be online by June 2024.
  • Caballero CA Storage (Origis USA) – 99.7 MW standalone, transmission-connected battery energy storage resource in Nipomo, California (San Luis Obispo County) and scheduled to be online by June 2024.

News item from PG&E

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