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Glossary - W

For your convenience, this page contains an alphabetically organized list of terms, definitions and common acronyms used in the electric utility industry.

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Term/Acronym Definition
WAN Wide Area Network
WECC Western Electric Coordinating Council
WFP Waha Fuel Price
WGR Wind-powered Generation Resource
WGRPP Wind-powered Generation Resource Production Potential
WMS Wholesale Market Subcommittee
WRUC Weekly Reliability Unit Commitment
WSIDR Weather-Sensitive Interval Data Recorder

WSL

Wholesale Storage Load

Watch The third of four levels of communication issued by ERCOT in anticipation of a possible Emergency Condition.

Weather Zone

A geographic region designated by ERCOT in which climatological characteristics are similar for all areas within such region.

Weekly Reliability Unit Commitment (WRUC) An instruction issued by ERCOT prior to 1330 in the Day-Ahead for an Operating Day that reserves a Generation Resource that requires a longer lead time for startup than possible from the DRUC.
Wholesale Customer A NOIE receiving service at wholesale points of delivery from an LSE other than itself.

Wholesale Storage Load (WSL)

Energy that is separately metered from all other Facilities to charge a technology that is capable of storing energy and releasing that energy at a later time to generate electric energy.  WSL includes losses for the energy conversion process that are captured by the WSL EPS Meter.  WSL is limited to the following technologies: batteries, flywheels, compressed air energy storage, pumped hydro-electric power, electro chemical capacitors, and thermal energy storage associated with turbine inlet chilling.

Wind-powered Generation Resource (WGR)

A Generation Resource that is powered by wind. Wind turbines may be aggregated together to form a WGR as set forth in paragraph (11) of Section 3.10.7.2, Modeling of Resources and Transmission Loads.

Wind-powered Generation Resource Production Potential (WGRPP) The generation in MWh per hour from a WGR that could be generated from all available units of that Resource allocated from the 80% probability of exceedance of the Total ERCOT Wind Power Forecast (TEWPF).