Briefing on Separator (Etiwanda) BESS

Overview

• Separator (Etiwanda) BESS is an operating battery storage plant in California, operational since 2024.

• It is owned by Southern California Edison Co. and its parent company is Edison International.

Fleet Details

• The plant has a capacity of 113 MW MWH with 1 generator utilizing Batteries technology.

• It operates within the CAISO (California) ISO, WECC NERC region, and California Independent System Operator BA.

• The plant has a recent annual generation of -19 GWh and a capacity factor of -1.9%.

Financial Profile

• The Capital Expenditure (CapEx) for the plant is $1361/kW, sourced from eia_agg_cost.

Separator (Etiwanda) BESS represents a significant battery storage asset in California's energy grid, owned by a major utility. Its recent negative generation figures warrant further investigation into operational performance and grid integration.