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Standards

WECC develops and implements Regional Reliability Standards and WECC Regional Criteria specifically for the Western Interconnection. Regional Entities have the unique ability to draft documents tailored to their region, leveraging subject matter experts who understand the physical and operational nuances of the local high-voltage grid. WECC also actively participates in the NERC Reliability Standards Development processes.

NERC Reliability Standards define the reliability requirements for planning and operating the North American Bulk-Electric System (BES) and are developed using a results-based approach that focuses on performance, risk management, and entity capabilities. The Reliability Functional Model defines the functions that need to be performed to ensure the BES operates reliably and is the foundation upon which the Reliability Standards are based.

NERC Standards

The Alberta Electric System Operator (AESO) has been leading an initiative to adopt North American Electric Reliability Corporation (NERC) reliability standards as Alberta Reliability Standards. This important work contributes to the reliable operation of the Alberta electric system. The development of a more consistent set of standards is also essential in maintaining and improving the reliability of the North American electric grid.

AESO Standards

File Type Title Sort descending Effective Date Inactive Date
PDF PRC-021-1 BC Under-Voltage Load Shedding Program Data
PDF PRC-022-1 BC Under-Voltage Load Shedding Program Performance
PDF PRC-023-1 BC Transmission Relay Loadability - {Refer to Reliability Standard for dates}
PDF PRC-023-2 BC Transmission Relay Loadability - {Refer to Reliability Standard for dates}
PDF PRC-023-2 with BC-Specific Implementation Plan
PDF PRC-023-3 Transmission Relay Loadability
PDF PRC-023-4 BC - Transmission Relay Loadability {Refer to Reliability Standard for dates}
PDF PRC-023-5_BC-Transmission Relay Loadability {Refer to Reliability Standard for dates}
PDF PRC-023-6 with BC-Specific Implementation Plan
PDF PRC-024-1 Generator Frequency and Voltage Protective Relay Settings
PDF PRC-024-2 BC Generator Frequency and Voltage Protective Relay Settings - {Effective Date: Please refer to standard for phased in effective dates. Per BCUC Order R-14-20, 100% compliance by April 1, 2021}
PDF PRC-024-3 BC - Frequency and Voltage Protection Settings
PDF PRC-025-1 Generator Relay Loadability
PDF PRC-025-2 BC Generator Relay Loadability {Effective date: October 1, 2019 and as per BC-specific Implementation Plan.}
PDF PRC-026-2_BC
PDF PRC-027-1 BC Coordination of Protection Systems for Performance During Faults
PDF PRC-STD-001-1 BC Certification of Protective Relay Applications and Settings
PDF PRC-STD-003-1 BC Protective Relay and Remedial Action Scheme
PDF PRC-STD-005-1 BC Transmission Maintenance
PDF TOP-001-1 BC Reliability Responsibilities and Authorities
PDF TOP-001-1a BC Reliability Responsibilities and Authorities
PDF TOP-001-3 BC Transmission Operations
PDF TOP-001-4 BC Transmission Operations {Per BCUC Order R-14-20 effective date deferred to April 1, 2021}
PDF TOP-001-5_BC Transmission Operations
PDF TOP-001-6_BC - Transmission Operations {Effective date: October 1, 2025, and as per BC-specific Implementation Plan}