Emissions by plant and by region
(2) For each affected unit in the long-term coal-fired steam generating subcategory, by January 1, 2032. The owner or operator of an affected EGU must demonstrate that they have commenced permitting actions by a date specified in the State plan. The owner or operator of an affected EGU can demonstrate compliance with this increment of progress by submitting sufficient evidence that the appropriate contracts have been awarded. (3) For the purposes of 40 CFR 70.2, with respect to greenhouse gas emissions from facilities regulated in the State plan, the “pollutant that is subject to any standard promulgated under section 111 of the Act” shall be considered to be the pollutant that otherwise is “subject to regulation” as defined in 40 CFR 70.2. An affected steam generating unit shall, for the purposes of this subpart, be referred to as an affected EGU. This subpart establishes emission guidelines and approval criteria for State plans that establish standards of performance limiting greenhouse gas (GHG) emissions from an affected steam generating unit.
(iii) Presumptively approvable standard of performance is an emission rate limit defined by an 88.4 percent reduction in annual emission rate (lb CO2/MWh-gross) from the unit-specific baseline. (4) An affected EGU’s standard of performance is permanent if the standard of performance must be met continuously unless it is replaced by another standard of performance in an approved State plan revision. (3) An affected EGU’s standard of performance is non-duplicative with respect to https://callmeconstruction.com/news/understanding-how-technology-is-affecting-modern-buildings/ a State plan if it is not already incorporated as an standard of performance in the State plan. (2) An affected EGU’s standard of performance is verifiable if adequate monitoring, recordkeeping and reporting requirements are in place to enable the State and the Administrator to independently evaluate, measure, and verify compliance with the standard of performance. (1) An affected EGU’s standard of performance is quantifiable if it can be reliably measured in a manner that can be replicated. (a) For each affected EGU, your State plan must include the standard of performance that applies for the affected EGU.
- (j) EGUs that derive greater than 50 percent of the heat input from an industrial process that does not produce any electrical or mechanical output or useful thermal output that is used outside the affected EGU.
- (2) The report must include, for each affected EGU, a comparison of the CO2 standard of performance in the State plan versus the actual CO2 emission performance achieved.
- (3) The owner or operator must submit a final report to the EPA no later than 6 months following its committed closure date.
- (a) If you are the owner or operator of an EGU that has committed to permanently cease operations by January 1, 2032, you must maintain records for and submit the reports listed in paragraphs (a)(1) through (3) of this section according to the electronic reporting requirements in paragraph (b) of this section.
In June 2025, EPA Administrator Lee Zeldin proposed a repeal of all greenhouse gas emissions standards for the power sector. These include plans for renewable energy power purchase agreements, but also on-site resiliency projects such as microgrids, combined heat and power, rooftop solar, energy storage, digitalization and building efficiency upgrades. The C&I sectors together account for close to 30 percent of greenhouse https://shipsbusiness.com/energy-efficiency-measures-ballast-water-management.html gas emissions in the U.S.
Subpart UUUUb—Emission Guidelines for Greenhouse Gas Emissions for Electric Utility Generating Units
If your company is required to report greenhouse gas emissions or chooses to analyze its carbon footprint, you may need information about natural gas delivered by Wisconsin Public Service. The emission rates apply to retail electric utility customers of WPS, except for customers of NatureWise, the WPS renewable energy program that is offered to all retail electric customers. The emission rates are supplied for customers to estimate their environmental footprint from electric energy supplied by WPS, such as Scope 2 (indirect) greenhouse gas emissions. The EPRI program manager said the bulk of emissions reductions to take place in the power sector were likely to happen even in the absence of utility emissions targets.
(5) A demonstration of how the application of the aggregate rate-based standard of performance will achieve equivalent or better emission reduction as would be achieved through the application of a rate-based standard of performance (lb CO2/MWh-gross) that would apply pursuant to paragraph (a)(1) of this section, and as determined in accordance with paragraphs (c) and (d) of this section. (3) The process for calculating the aggregate gross generation weighted average emission rate (lb CO2/MWh-gross) at the end of each compliance period, based on the reported emissions (lb CO2) and utilization (MWh-gross) of each of the affected EGUs that form the group. (2) Documentation of any assumptions underlying the calculation of the aggregate rate-based standard of performance (lb CO2/MWh-gross). (1) The presumptively approvable rate-based standard of performance (lb CO2/MWh-gross) that would apply under paragraph (a)(1) of this section, and as determined in accordance with paragraphs (c) and (d) of this section, to each of the affected EGUs that form the group. (2) A mass-based standard of performance in the form of an annual limit on allowable mass CO2 emissions for an individual affected EGU, provided the standard of performance meets the requirements of paragraph (g) of this section.
Brazil’s utility energy efficiency programs reduced electricity use by 9.2 terawatt-hours in 2023, supporting its goal of 20% renewable energy by 2030 South Korea’s utility sector reduced emissions by 12% from 2018 to 2023, supported by a 30% renewable energy target Brazilian utility emissions fell by 19% from 2004 to 2023, due to increased wind and solar capacity The IPCC’s AR6 report states that limiting utility emissions to 2.5 gigatons annually by 2030 requires a 45% reduction from 2010 levels France’s utility sector emitted 42 million metric tons of CO2 in 2023, down 35% from 1990 Australian utility emissions fell by 28% from 2000 to 2023, driven by replacing coal with wind and solar
- Emission factors contained in Table 4.2 must be used for the quantification of GHG reductions occurring in calendar year 2025.
- This report must explain the cause or causes of the deviation and describe all measures taken or to be taken by the owner or operator of the EGU to cure the reported deviation and to prevent such deviations in the future, including the timeframes in which the owner or operator intends to cure the deviation.
- (2) Any permit(s) obtained for the installation of the identified controls or, where a required permit has not yet been issued, a copy of the permit application submitted to the permitting authority and a statement from the permit authority identifying its anticipated timeframe for issuance of such permit(s).
- Heat recovery steam generating unit (HRSG) means a unit in which hot exhaust gases from the combustion turbine engine are routed in order to extract heat from the gases and generate useful output.
- Emission factors contained in Table 3.1 must be used for the quantification of GHG reductions occurring in calendar years 2023 and 2024.
Reported Greenhouse Gas Emissions
Heat recovery steam generating unit (HRSG) means a unit in which hot exhaust gases from the combustion turbine engine are routed in order to extract heat from the gases and generate useful output. (1) For stationary combustion turbines and IGCC, the gross electric or direct mechanical output from both the EGU (including, but not limited to, output from steam turbine(s), combustion turbine(s), and gas expander(s)) plus 100 percent of the useful thermal output. Compliance period means an annual (calendar year) period for an affected EGU to comply with a standard of performance. Combined heat and power unit or CHP unit, (also known as “cogeneration”) means an electric generating unit that uses a steam-generating unit or stationary combustion turbine to simultaneously produce both electric (or mechanical) and useful thermal output from the same primary energy source.
Electric power plant environmental
Gas-fired generation, which has dominated the overall U.S. electricity resource mix in the past decade, actually dropped by 4%, eliminating about 23 million metric tons. Coal-fired electricity generation increased 13% and raised its portion of CO2 emissions by 78 million metric tons, according to the EIA. U.S. greenhouse gas emissions, least in CO2 terms, have gradually declined over the past two decades.
Generation and thermal output
Overall, the U.S. total CO2 emissions were 4.9 billion metric tons in 2025, 2% higher than the 4.789 billion metric tons ignited into the American sky one year earlier, the EIA data shows. Electric power accounted for the largest increase in emissions of 58 million metric tons to 1.485 billion metric tons last year; that’s a 4% rise. Total U.S. C02 emissions from all economic and population sectors is nearly 5 billion metric tons produced in 2025, but that’s about 17% lower than the 6 billion metric tons calculated around 2007, according to the EIA. U.S. greenhouse gas emissions have decreased over two decades, but recent Energy Information Administration data shows a 2% rise in 2025, with electricity sector growth and coal dependency playing significant roles.
