New Rules Ensure Power Plants Survive Deep Freezes Without Fail
Published Date: 9/23/2025
Notice
Summary
The Federal Energy Regulatory Commission just approved a new cold weather rule, EOP-012-3, to help power plants get ready for freezing weather and keep the lights on during big winter storms. This update replaces the old rule and requires better preparation and data collection from power companies across North America. The changes kick in soon and aim to prevent costly blackouts when the cold hits hard.
Analyzed Economic Effects
6 provisions identified: 2 benefits, 3 costs, 1 mixed.
New Cold-Weather Rule Starts Oct 1, 2025
The Federal Energy Regulatory Commission approved Reliability Standard EOP-012-3 to take effect October 1, 2025. The Commission says the standard improves generator cold-weather preparedness to help keep the lights on during extreme winter storms.
New Timelines for Fixing Freeze Issues
Generator owners must follow new corrective-action timelines under EOP-012-3: implementing new freeze-protection measures within 48 months and remedying issues with existing measures within 24 months. For fleet reviews, corrective actions must be implemented within 24 months of review or no later than 36 calendar months after a Generator Cold Weather Reliability Event, and any extension must be approved by the compliance enforcement authority.
New Units Must Meet Cold Standard by 2027
Generating units that begin commercial operation on or after October 1, 2027 must be capable of operating at the Standard's Extreme Cold Weather Temperature without using a corrective action plan. New units cannot rely on a corrective-action workaround to meet cold-weather capability if they enter commercial operation on or after that date.
Specific Wind-Turbine Low-Temp Limitation
Attachment 1 to the Standard identifies low-temperature operability of wind turbine towers manufactured before October 1, 2029 and that entered commercial operation before October 1, 2031 as a known Generator Cold Weather Constraint. The Standard says this limitation should not serve as the basis for a constraint indefinitely.
NERC Must Report Biennial Constraint Data
The Commission directed NERC to submit anonymized, regional data biennially starting by October 2026 and ending October 2034 on: (1) number of submitted Generator Cold Weather Constraint declarations, (2) number approved, (3) aggregate MVA of approved declarations, and (4) summaries of rationales. NERC must also provide a narrative analysis on notification timeliness, impacts of 36‑month correction windows, consistency of approval, and other reliability issues.
Estimated Compliance Reporting Burden
The Commission estimates EOP-012-3 affects 1,314 U.S. generator owners. The order estimates an added burden of 1 response per entity at 4 hours each (total 5,256 hours) and an estimated cost of $333,861.12 for those hours.
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