Annual capacity factor

{
  "id": "MLC-T-ENV-001715",
  "term": "Annual capacity factor",
  "field": "Environment",
  "term_source": "Annual Capacity Factor",
  "definition": "1. Ratio between the actual heat input to a steam generating unit from the fuels listed in § 60.42b(a), § 60.43b(a), or § 60.44b(a), as applicable, during a calendar year and the potential heat input to the steam generating unit had it been operated for 8,760 hours during a calendar year at the maximum steady state design heat input capacity. In the case of steam generating units that are rented or leased, the actual heat input shall be determined based on the combined heat input from all operations of the affected facility in a calendar year.\n\n2. Ratio between the actual heat input to a boiler from the fuels burned during a calendar year and the potential heat input to the boiler had it been operated for 8,760 hours during a year at the maximum steady state design heat input capacity.\n\n3. Ratio between the actual heat input to an EGU during a calendar year and the potential heat input to the EGU had it been operated for 8,760 hours during a calendar year at the base load rating.\n\n4. ratio between the actual heat input to an EGU during a calendar year and the potential heat input to the EGU had it been operated for 8,760 hours during a calendar year at the base load rating. Actual and potential heat input derived from non-combustion sources ( e.g., solar thermal) are not included when calculating the annual capacity factor. [40 CFR 40 CFR 60.5580 (CFR 2024)], [40 CFR 60.5580a (CFR 2024)],",
  "subject": "Regulatory activities",
  "references": [
    "40 CFR 60.41b (CFR 2013)",
    "40 CFR 63.11237 (CFR 2017)",
    "84 FR 32520; Repeal of the Clean Power Plan; Emission Guidelines for Greenhouse Gas Emissions From Existing Electric Utility Generating Units; Revisions to Emission Guidelines Implementing Regulations; 40 CFR 60.21a (CFR 2020); 40 CFR 60.5580b (CFR 2024); 40 CFR 60.5805a (CFR 2020)",
    "EPA EV-Regulatory Activities-Regulatory Quantities"
  ],
  "url": "https://mlchart.com/terminology/environment/annual-capacity-factor/"
}