Oklahoma CO₂ Emissions
Oklahoma emitted 89 million metric tons of energy-related CO₂ in 2024, 1.9% of the US total. That ranks it 18th among the 50 states and the District of Columbia, at 21.6 metric tons per person.
Data year 2024 · Source: U.S. Energy Information Administration, State Energy Data System (June 2026)
How much CO₂ does Oklahoma emit?
Oklahoma produced 89 million metric tons of carbon dioxide from burning fossil fuels in 2024. The United States as a whole emitted 4.78 billion metric tons, so Oklahoma accounts for 1.9% of the national total.
Per person, that is 21.6 metric tons, 1.5 times the US average of 14.1 metric tons. On that measure Oklahoma ranks 12th highest of 51.
CO₂ emissions in Oklahoma since 1990
Energy-related emissions in Oklahoma have changed by less than 1% since 1990, from 88 million metric tons to 89 million metric tons. Compared with 2005, the baseline year for many US climate targets and marked on the chart, they have fallen by 17%. Emissions peaked in 2008 at 112 million metric tons and are now 21% below that level.
Emissions by sector
Transportation is the largest source of energy-related CO₂ in Oklahoma, at about 35% of the total, followed by electric power at 31% and industrial at 27%.
Emissions by fuel
Natural gas produces about 51% of the state’s energy-related CO₂, petroleum 41% and coal 8%.
How Oklahoma compares with other states
These are the states closest to Oklahoma in the 2024 ranking by total emissions. See the full ranking of all states.
| # | State | Total (Mt) | Share of US | Per person (t) |
|---|---|---|---|---|
| 16 | Missouri | 98.03 | 2.1% | 15.7 |
| 17 | Tennessee | 90.46 | 1.9% | 12.5 |
| 18 | Oklahoma | 88.56 | 1.9% | 21.6 |
| 19 | New Jersey | 87.84 | 1.8% | 9.2 |
| 20 | Wisconsin | 85.12 | 1.8% | 14.3 |
Frequently asked questions
How much CO₂ does Oklahoma emit per year?
Oklahoma emitted 89 million metric tons of energy-related CO₂ in 2024, which is 1.9% of the US total of 4.78 billion metric tons.
What are the CO₂ emissions per person in Oklahoma?
About 21.6 metric tons per person in 2024, 1.5 times the US average of 14.1 metric tons. That ranks 12th highest of 51.
Have emissions in Oklahoma fallen since 2005?
They have fallen by 17% since 2005 and changed by less than 1% since 1990. Emissions peaked in 2008 at 112 million metric tons and are now 21% below that level.
What is the biggest source of CO₂ in Oklahoma?
Transportation is the largest sector, at about 35% of energy-related emissions, followed by electric power at 31%. By fuel, natural gas accounts for 51%.
About the data. Figures are energy-related carbon dioxide emissions: CO₂ from burning coal, natural gas and petroleum, in million metric tons. Emissions from power plants are counted in the state where the electricity is generated, not where it is used. Other greenhouse gases and non-energy sources such as agriculture are not included.
Source: U.S. Energy Information Administration, State Energy Data System, released June 26, 2026. Latest year available: 2024.
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