ERC Resolution No. 23, Series of 2026 – Revised Reliability Performance Rules for Generating Units
ERC adopted revised rules on reliability performance indices and unplanned outage allowances for generating units, establishing updated benchmarks and stricter compliance measures to enhance power supply reliability and operational accountability.
7/11/20263 min read
SUMMARY
WHAT IT IS
This Resolution adopts revised rules setting technology-specific reliability performance benchmarks and maximum allowable unplanned outage days per year for generating units, replacing previous interim rules.
Generation companies (GenCos) with covered facilities
System Operator (SO)
DOE
WHO IS AFFECTED
KEY DEADLINES
Rules take effect 15 days after publication in a newspaper of general circulation or the Official Gazette.
Applies to performance/compliance periods from calendar year 2026 onward.
Five-year planned outage schedules due annually by April 30.
PMS Completion Reports due within 45 days after maintenance completion.
TAKEAWAY
GenCos must strictly monitor, report, and manage outages to stay within technology-specific caps and avoid penalties.
Immediate alignment of planned outages with GOMP and timely submission of required reports are essential for compliance.
KEY POINTS
Scope: Applies to all generation companies with conventional and non-variable renewable energy generating facilities (including embedded generators) connected to the Grid with an aggregated rated capacity of 5 MW and above; includes Run-of-River and Pumped-Storage hydroelectric plants.
Requirements: Generation companies must submit annual reliability performance data and event reports (planned/unplanned outages, deratings, reserve shutdowns) per ERC Resolution No. 21, Series of 2016, as amended.
Thresholds: Equivalent Unplanned Outage Days Allowance (EUODA) per year is set per technology (e.g., Biomass: 32.06 days, Gas Turbine: 26.92 days, Hydro Conventional: 12.72 days, etc.).
Deadlines:
Five-year Planned Outage (PO) schedules must be submitted to the System Operator (SO) by April 30 each year.
PMS Completion Reports must be submitted within 45 calendar days after completion of preventive maintenance.
Compliance Plans (if required) must be submitted within 45 days of ERC directive.
Covered Entities: All generation companies with covered facilities, including embedded and pumped-storage units; exemptions apply for mothballed or decommissioned units as approved by DOE.
Compliance Obligations:
Adherence to planned outage schedules as approved in the GOMP.
Strict observance of the maximum equivalent unplanned outage days per technology.
Submission of supporting documents for outages classified as Outside Management Control (OMC).
Submission of Compliance Plan if non-compliance persists for two or more consecutive years.
Mechanisms Introduced/Amended:
Revised reliability performance indices and outage classification definitions.
Annual evaluation of reliability performance on a per-unit basis.
Publication of annual performance data by ERC.
Penalty structure based on rated capacity and duration of non-compliance, with escalating penalties for repeated violations.
Introduction of formulas for calculating reliability indices and outage allowances.
Enforcement: Non-compliance may result in Show Cause Orders, administrative sanctions, and monetary penalties as specified in Article IV.
Effectivity: Rules apply to performance and compliance assessment periods from Calendar Year 2026 onwards, effective 15 days after publication.
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ERC Resolution No. 23, Series of 2026
Detailed policy analysis
Operational and compliance implications
Stakeholder impact assessment
Risk flags and ambiguities
Suggested next actions
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Tags: Reliability Indices, Outage Caps, Generating Units, Compliance Reporting, Penalties, Planned Outages