Western Electricity Coordinating Council


alternating current

Bulk Electric System (BES)​​

Refers to the parts of the power grid that are subject to NERC Reliability Standards

Bulk-Power System (BPS)

Refers to all interconnected electric systems that make up the power grid

Compliance 101

Our Compliance Monitoring and Enforcement Program (CMEP) monitors and enforces compliance with mandatory reliability standards approved by the Federal Energy Regulatory Commission (FERC) and by authorities in Alberta and British Columbia, Canada, and in Baja California, Mexico.

​Compliance staff recommends the registration of entities for applicable functions to NERC, assisting in the registration process, ensuring there are no omissions in the registration of entities in the Western Interconnection and helping resolve registration disputes.

Compliance staff monitors Registered Entities for compliance standards. When reliability standards have been violated, WECC’s Compliance Enforcement staff reviews, monitors and verifies mitigation plans filed by Registered Entities to correct violations. Enforcement staff also determines, as appropriate, proposed penalties for alleged violations and conducts settlement negotiations with Registered Entities when requested.


direct current


high voltage direct current


Abbreviation for hertz, which is a unit of frequency equal to one cycle per second.


To connect or become connected.


An Interconnection is a physically- and electrically-defined area that encompasses the infrastructure components, entities, policies and operations of the Bulk Electric System.


A kilovolt (kV) is 1,000 volts.


A kilovolt-ampere (kVA) is 1,000 volt-amperes.


A kilowatt (kW) is 1,000 watts.


A kilowatt-hour (kWh) is a measure of electrical energy equal to the consumption of 1,000 watts per one hour.


One million British thermal units.


A megawatt (MW) is one million watts.


A megawatt-hour (MWh) is a measure of electrical energy equal to the consumption of one million watts per one hour.


A megavolt-ampere (MVA) is one million volt-amperes.


A megavar (Mvar) is a way of expressing reactive power.

NERC Entity Names

Florida Reliability Coordinating Council (FRCC)
​Midwest Reliability Organization (MRO)
Northeast Power Coordinating Council (NPCC)
ReliabilityFirst Corporation (RFC)
Southeast Reliability Corporation (SERC)
Southwest Power Pool, Inc. (SPP)
Texas Reliability Entity (TRE)
Western Electricity Coordinating Council (WECC)

WECC 101

The Western Electricity Coordinating Council (WECC) is a non-profit corporation that exists to assure a reliable Bulk Electric System in the geographic area known as the Western Interconnection. WECC has been approved by the Federal Energy Regulatory Commission (FERC) as the Regional Entity for the Western Interconnection. The North American Electric Reliability Corporation (NERC) delegated some of its authority to create, monitor, and enforce reliability standards to WECC through a Delegation Agreement.

WECC neither owns electric infrastructure, such as transmission lines or generation plants, nor has authority or jurisdiction over the siting, permitting, cost allocation or construction of transmission projects. WECC leads stakeholders in the Western Interconnection to achieve optimal system reliability through cooperation and collaboration.

The Western Interconnection is a physically- and electrically-defined area that encompasses the infrastructure components of the Bulk Electric System. The area extends from Canada to Mexico and includes Alberta and British Columbia, all or parts of the 14 Western states, and northern Baja California. WECC works with entities that are located within the Western Interconnection.

​Western Interconnection

The Western Interconnection extends from Canada to Mexico. It includes the Canadian provinces of Alberta and British Columbia, the northern part of Baja California in Mexico, and all or part of the 14 Western states in between.


The Western Renewable Energy Generation Information System (WREGIS) is an independent, renewable energy tracking system for the region covered by the Western Electricity Coordinating C​ouncil (WECC). WREGIS tracks renewable energy generation from units that register in the system by using verifiable data and creatin​g renewable energy certificates (REC) for this generation.

​WREGIS creates a certificate with a unique serial number for each megawatt-hour of renewable energy produced by these registered units. These certificates may be used by electricity suppliers, other energy market participants, and policy makers to verify compliance with state, provincial, and voluntary program policies and regulatory requirements.


  • Provides generation tracking services to more than 600 customers and 3,000 generating units throughout the Western Interconnection.
  • Gathers and tracks data, including meter information from qualified entities, and e-tag information for energy delivery for Renewable Portfolio Standards compliance.
  • Conducts audits to provide assurance that its data is accurate and educates account holders on data collection best practices.
  • Provides aggregated data on account holders, generating units, and certificates.