IESO Drops Termination Option for Long Lead-time RFP

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Buy-local Incentives May Delay Solicitation

Highview Power is building the first commercial-scale liquid air energy storage plant in the United Kingdom, the 50-MW/300-MWh Carrington project near Manchester. | Highview Power

Dec 18, 2025 | Rich Heidorn Jr.

Responding to opposition from suppliers, IESO said it will not include a termination option in its procurement for long lead-time resources.

Energy Market Hydropower IESO Other Electric Storage Resource Adequacy

KeywordsIndependent Electricity System Operator (IESO)long lead-time (LLT) resources Long-duration energy storage (LDES)must-offer obligation Ontario Waterpower Association

Rich Heidorn Jr.

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