In 2009, the US Environmental Protection Agency issued regulations that required large sources of greenhouse gases to report their emissions each year. This program, known as the Greenhouse Gas Reporting Program, made facility-reported information about emissions of greenhouse gases available to the public. It also required suppliers of petroleum and gas products, like petroleum refineries, to estimate and report emissions from the use of their products.
But in 2025, the Trump Administration put the program on hold. President Trump has falsely asserted that climate change is a ‘hoax,’ and his administration has moved to cripple EPA’s ability to regulate greenhouse gas pollution and stop collecting information about it. In September 2025, the administration announced plans to stop collecting greenhouse gas data from most industrial sources. EPA also delayed its release of the most recent data, which covered the 2024 calendar year. To date, EPA has not made this important information available to the public.
The Environmental Integrity Project obtained this emission data—2024 greenhouse gas emissions— from EPA through a Freedom of Information Act request to ensure the public has access to information about climate pollution.
The data show that U.S. companies reported directly emitting 2.69 billion metric tons of greenhouse gases in 2024, slightly less than what was reported in 2023, reflecting the continuation of a generally downward trend over the last decade and a half. According to EPA data, reported greenhouse gas emissions steadily declined since 2011, largely due to the power sector’s transition away from burning coal. These numbers reflect an updated estimate for the greenhouse gas potency of methane and other pollutants that were not reflected in data from previous years.
The 10 facilities that reported releasing the most greenhouse gases in 2024 are shown in the table below. Eight of the ten are coal-fired power plants, and the remaining two are ExxonMobil’s Baytown oil refinery and chemical complex outside of Houston, Texas, and US Steel’s steel mill in Gary, Indiana.
Ten Facilities That Reported Emitting the Most Greenhouse Gases, 2024
Rank | Facility | Location | Total Reported Emissions (metric tons CO2e) | Link |
1 | Alabama Power – James H. Miller Jr. Generating Plant | Quinton, AL | 19,013,074 | |
2 | Amaren Missouri- Labadie Energy Center | Labadie, MO | 14,055,616 | |
3 | DTE Energy – Monroe Power Plant | Monroe, MI | 12,753,271 | |
4 | ExxonMobil Baytown Refinery and Chemical Complex | Baytown, TX | 12,445,282 | |
5 | Luminant – Oak Grove Power Plant | Franklin, TX | 11,175,380 | |
6 | Lightstone Generation – Gen. J.M. Gavin Power Plant | Cheshire, OH | 11,139,843 | |
7 | NRG Energy – W.A. Parish Generating Station | Thompson, TX | 10,988,092 | |
8 | US Steel Corp – Gary Works Iron and Steel Mill | Gary, IN | 10,739,397 | |
9 | Luminant – Martin Lake Power Plant | Tatum, TX | 10,590,663 | |
10 | Georgia Power – Plant Bowen | Cartersville, GA | 10,452,699 |
Source: Facility-reported information submitted to the EPA.
For more information about EPA’s Greenhouse Gas Reporting Program and access data from earlier years, click here.
Media inquiries can be sent to Tom Pelton (tpelton@environmentalintegrity.org). Research questions can be sent to Courtney Bernhardt (cbernhardt@environmentalintegrity.org).
