Concerned about looming reliability issues, the California Public Utilities Commission has proposed to extend the planned retirement of as much as 3,750 MW of gas-fired plants and to accept offers from gas fired generation in a proposed solicitation.

In the proposed decision, issued Sept. 12, the PUC recommends that the State Water Resources Control Board extend of the “once-through-cooling” compliance deadline for three years beyond the current Dec. 31, 2020 deadline.

California is facing the potential retirement of as much as 4,000 MW of gas-fired generation when the once-through rules, which are designed to reduce harm to sea life that can occur when ocean water is used to cool coastal power plants, take effect.

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