Glossary - u
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 |
| UFE | Unaccounted For Energy |
| URL | Unit Reactive Limit |
| USTR | Uninitiated Service Termination Request |
| Unaccounted for Energy (UFE) | The difference between total metered Load each Settlement Period, adjusted for applicable Distribution Losses and Transmission Losses, and total ERCOT System net generation. |
| Uncontrollable Renewable Resources | Generators that can only produce an amount of energy directly related to their supply of variable energy from their respective renewable resources, such as wind or solar. |
| Uninstructed Deviation | A condition occurring whenever the total metered resources of a QSE for a Settlement Interval are different from the total of the scheduled resources plus any Resource deployments instructed by ERCOT. |
| Uninstructed Factor | A factor used to reduce the total payments made to a Resource for Uninstructed Deviations. The Uninstructed Factor could change by interval, in accordance with Section 6.8.1.14.2, Determining the Uninstructed Factor. |
| Unusual Event | Specifics events, as defined in these Protocols Section 4, Scheduling, that allow ERCOT to deploy Balancing Energy Service outside of the normal deployment notification. |
| Uplift | The process of allocating costs to QSEs based on Loads and exports within the ERCOT Region. |
| Usage Profile | See Load Profile |