Derate

{
  "id": "MLC-T-ENE-000531",
  "term": "Derate",
  "field": "Energy",
  "definition": "A decrease in the available capacity of an electric generating unit, commonly due to:\n\n• A system or equipment modification\n\n• Environmental, operational, or reliability considerations. Causes of generator capacity deratings include high cooling water temperatures, equipment degradation, and historical performance during peak demand periods. In this context, a derate is typically temporary and due to transient conditions.\n\nThe term derate can also refer to discounting a portion of a generating units capacity for planning purposes.",
  "subject": "Electricity",
  "references": [
    "EIA Glossary"
  ],
  "url": "https://mlchart.com/terminology/energy/derate/"
}