Cogeneration Unit

{
  "id": "MLC-T-ENV-005522",
  "term": "Cogeneration Unit",
  "field": "Environment",
  "definition": "1. Stationary, fossil-fuel-fired boiler or stationary, fossil-fuel-fired combustion turbine:(1) Having equipment used to produce electricity and useful thermal energy for industrial, commercial, heating, or cooling purposes through the sequential use of energy; and(2) Producing during the 12-month period starting on the date the unit first produces electricity and during any calendar year after the calendar year in which the unit first produces electricity - (i) For a topping-cycle cogeneration unit, (A) Useful thermal energy not less than 5 percent of total energy output; and(B) Useful power that, when added to one-half of useful thermal energy produced, is not less then 42.5 percent of total energy input, if useful thermal energy produced is 15 percent or more of total energy output, or not less than 45 percent of total energy input, if useful thermal energy produced is less than 15 percent of total energy output.(ii) For a bottoming-cycle cogeneration unit, useful power not less than 45 percent of total energy input;(3) Provided that the total energy input under paragraphs (2)(i)(B) and (2)(ii) of this definition shall equal the unit's total energy input from all fuel except biomass if the unit is a boiler.\n\n2. Unit that has equipment used to produce electric energy and forms of useful thermal energy (such as heat or steam) for industrial, commercial, heating, or cooling purposes, through sequential use of energy. [40 CFR 72.2]Stationary, fossil-fuel-fired boiler or stationary, fossil-fuel-fired combustion turbine that is a topping-cycle unit or a bottoming-cycle unit:(1) Operating as part of a cogeneration system; and(2) Producing on an annual average basis - (i) For a topping-cycle unit,(A) Useful thermal energy not less than 5 percent of total energy output; and(B) Useful power that, when added to one-half of useful thermal energy produced, is not less than 42.5 percent of total energy input, if useful thermal energy produced is 15 percent or more of total energy output, or not less than 45 percent of total energy input, if useful thermal energy produced is less than 15 percent of total energy output.(ii) For a bottoming-cycle unit, useful power not less than 45 percent of total energy input;(3) Provided that the requirements in paragraph (2) of this definition shall not apply to a calendar year referenced in paragraph (2) of this definition during which the unit did not operate at all;(4) Provided that the total energy input under paragraphs (2)(i)(B) and (2)(ii) of this definition shall equal the unit's total energy input from all fuel, except biomass if the unit is a boiler; and(5) Provided that, if, throughout its operation during the 12-month period or a calendar year referenced in paragraph (2) of this definition, a unit is operated as part of a cogeneration system and the cogeneration system meets on a system-wide basis the requirement in paragraph (2)(i)(B) or (2)(ii) of this definition, the unit shall be deemed to meet such requirement during that 12-month period or calendar year.\n\n3. Unit that produces electrical energy and useful thermal energy for industrial, commercial, or heating or cooling purposes, through the sequential or simultaneous use of the original fuel energy. [40 CFR 98.6]stationary, fossil-fuel-fired boiler or stationary, fossil-fuel-fired combustion turbine that is a topping-cycle unit or a bottoming-cycle unit:(1) Operating as part of a cogeneration system; and(2) Producing on an annual average basis - (i) For a topping-cycle unit,(A) Useful thermal energy not less than 5 percent of total energy output; and(B) Useful power that, when added to one-half of useful thermal energy produced, is not less than 42.5 percent of total energy input, if useful thermal energy produced is 15 percent or more of total energy output, or not less than 45 percent of total energy input, if useful thermal energy produced is less than 15 percent of total energy output.(ii) For a bottoming-cycle unit, useful power not less than 45 percent of total energy input;(3) Provided that the requirements in paragraph (2) of this definition shall not apply to a calendar year referenced in paragraph (2) of this definition during which the unit did not operate at all;(4) Provided that the total energy input under paragraphs (2)(i)(B) and (2)(ii) of this definition shall equal the unit's total energy input from all fuel, except biomass if the unit is a boiler; and(5) Provided that, if, throughout its operation during the 12-month period or a calendar year referenced in paragraph (2) of this definition, a unit is operated as part of a cogeneration system and the cogeneration system meets on a system-wide basis the requirement in paragraph (2)(i)(B) or (2)(ii) of this definition, the unit shall be deemed to meet such requirement during that 12-month period or calendar year. [40 CFR 97.702 (CFR 2013)].\n\n4. Stationary, fossil-fuel-fired boiler or stationary, fossil-fuel-fired combustion turbine:(1) Having equipment used to produce electricity and useful thermal energy for industrial, commercial, heating, or cooling purposes through the sequential use of energy; and(2) Producing during the 12-month period starting on the date the unit first produces electricity and during any calendar year after the calendar year in which the unit first produces electricity - (i) For a topping-cycle cogeneration unit, (A) Useful thermal energy not less than 5 percent of total energy output; and(B) Useful power that, when added to one-half of useful thermal energy produced, is not less then 42.5 percent of total energy input, if useful thermal energy produced is 15 percent or more of total energy output, or not less than 45 percent of total energy input, if useful thermal energy produced is less than 15 percent of total energy output.(ii) For a bottoming-cycle cogeneration unit, useful power not less than 45 percent of total energy input;(3) Provided that the total energy input under paragraphs (2)(i)(B) and (2)(ii) of this definition shall equal the unit's total energy input from all fuel except biomass if the unit is a boiler. [40 CFR 97.102 (CFR 2013)]\n\n5. Stationary, fossil-fuel-fired boiler or stationary, fossil-fuel-fired combustion turbine: Having equipment used to produce electricity and useful thermal energy for industrial, commercial, heating, or cooling purposes through the sequential use of energy; and Producing during the 12-month period starting on the date the unit first produces electricity and during any calendar year after the calendar year in which the unit first produces electricity - (i) For a topping-cycle cogeneration unit, (A) Useful thermal energy not less than 5 percent of total energy output; and VerDate Sep2014 11:13 Oct 11, 2018 Jkt 244173 PO 00000 Frm 00061 Fmt 8010 Sfmt 8010 Y:\\SGML\\244173.XXX 2 (B) Useful power that, when added to one-half of useful thermal energy produced, is not less then 42.5 percent of total energy input, if useful thermal energy produced is 15 percent or more of total energy output, or not less than 45 percent of total energy input, if useful thermal energy produced is less than 15 percent of total energy output. (ii) For a bottoming-cycle cogeneration unit, useful power not less than 45 percent of total energy input; (3) Provided that the total energy input under paragraphs (2)(i)(B) and (2)(ii) of this definition shall equal the unit’s total energy input from all fuel except biomass if the unit is a boiler.\n\n6. Stationary, fossil-fuel-fired boiler or stationary, fossil-fuel-fired combustion turbine: (1) Having equipment used to produce electricity and useful thermal energy for industrial, commercial, heating, or cooling purposes through the sequential use of energy; and (2) Producing during the 12-month period starting on the date the unit first produces electricity and during any calendar year after the calendar year in which the unit first produces electricity - (i) For a topping-cycle cogeneration unit, (A) Useful thermal energy not less than 5 percent of total energy output; and (B) Useful power that, when added to one-half of useful thermal energy produced, is not less than 42.5 percent of total energy input, if useful thermal energy produced is 15 percent or more of total energy output, or not less than 45 percent of total energy input, if useful thermal energy produced is less than 15 percent of total energy output. (ii) For a bottoming-cycle cogeneration unit, useful power not less than 45 percent of total energy input; (3) Provided that the total energy input under paragraphs (2)(i)(B) and (2)(ii) of this definition shall equal the unit’s total energy input from all fuel except biomass if the unit is a boiler. [40 CFR 96.202 (CFR 2018)]",
  "references": [
    "40 CFR 97.102 (CFR 2013)",
    "40 CFR 97.402 (CFR 2013)",
    "40 CFR 97.502 (CFR 2013)",
    "40 CFR 97.202 (CFR 2013)",
    "40 CFR 96.102 (CFR 2018)",
    "40 CFR 96.302 (CFR 2018)"
  ],
  "url": "https://mlchart.com/terminology/environment/cogeneration-unit/"
}