Terra-Gen Fined $5M for Using Batteries to Manipulate CAISO Market

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FERC Order Includes Additional Compliance Requirements

Valley Center energy storage facility in San Diego County, Calif. | Terra-Gen

Apr 9, 2026 | David Krause

FERC fined Terra-Gen nearly $5 million for strategically using its battery storage resources to repeatedly manipulate CAISO’s market over almost two years.

Ancillary Services Battery Electric Storage CAISO/WEIM Onshore Wind

Keywordsbattery energy storage systems (BESS)California Independent System Operator (CAISO)Federal Energy Regulatory Commission (FERC)IN26-2 regulation down Terra-Gen

David Krause

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