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Please see EPA's Climate Change site for current information on climate change and global warming. EPA no longer updates EPA's Global Warming Site, but is maintaining this archive for historical purposes. Thank you for visiting the archive of EPA's Global Warming Site.

State GHG Inventories

 

EPA's State and Local Capacity Building Branch partners with states to develop greenhouse gas (GHG) inventories and action plans. Forty-one states and Puerto Rico have completed inventories. Each inventory identifies the major sources of GHG emissions and creates a baseline upon which reduction strategies are based. States play a critical role in reducing GHG emissions; many states have developed State Action Plans that draw heavily on the information in their inventories.

The inventories present annual emissions of GHGs by sector (e.g., energy, agriculture, waste), by source (e.g., transportation emissions, manure management), and by gas (e.g., carbon dioxide, methane). State totals are reported in million metric tons of carbon equivalent (MMTCE) or million metric tons of carbon dioxide equivalent (MMTCDE); both units provide a common metric across the various gases, and normalize their influence on warming as expressed by their global warming potential. The methods on which the inventories are based generally estimate GHG emissions as a function of (a) activity data (e.g., electricity usage, cement production, fertilizer consumption, etc.) and (b) activity- and gas-specific emission factors. The EPA State and Local Capacity Building Branch has been instrumental in developing methods for state GHG inventories.

The inventory method has changed since EPA published the first guidance on developing state inventories of greenhouse gas (GHG) emissions in 1992. In fact, EPA has revised its guidance four times to incorporate changes in international inventory guidance, US inventory methods, and input from a panel of state representatives. The most recent guidance can be found in Volume VIII of the Emission Inventory Improvement Program (EIIP) Guidelines, entitled Estimating Greenhouse Gas Emissions.

EPA's online state inventory summaries attempt to reflect the most recent guidance by recalculating some of the emission estimates supplied by the states. Thus, GHG emissions reported in these summaries may differ from emission estimates reported in the states' inventory document. We have explained the difference between EPA and state estimates (22KB pdf).

Brief summaries of many state inventories are available at this site. In some cases, we also provide links to full text at state-sponsored websites. We have also created an overview of state GHG emissions by sector, reflecting the adjustments made by EPA (46KB pdf). To view inventory summaries and full text of state inventories, click on a state shaded orange in the map below or select a state from the “State GHG Inventories” drop-down menu. There is currently no information available for states shaded blue.

State GHG Inventories:





Alabama
Greenhouse Gas Emissions and Sinks Inventory Summary (18k pdf).

California
Updated Greenhouse Gas Emissions and Sinks Inventory Summary (79k pdf).
Original Greenhouse Gas Emissions and Sinks Inventory Summary (93k pdf).
Link to Inventory of California Greenhouse Gas Emissions and Sinks: 1990-1999.Exit EPA

Colorado
Greenhouse Gas Emissions and Sinks Inventory Summary (17k pdf).

Connecticut
Updated Greenhouse Gas Emissions and Sinks Inventory Summary (73k pdf).
Original Greenhouse Gas Emissions and Sinks Inventory Summary (81k pdf).
Link to Connecticut's 1990 and 1995 Greenhouse Gas Emissions Inventory.Exit EPA

Delaware
Greenhouse Gas Emissions and Sinks Inventory Summary (16k pdf).

Florida
Greenhouse Gas Emissions and Sinks Inventory Summary (135k pdf).

Georgia
Greenhouse Gas Emissions and Sinks Inventory Summary (17k pdf).

Hawaii
Greenhouse Gas Emissions and Sinks Inventory Summary (82k pdf).
Link to Hawaii Greenhouse Gas Inventory. Exit EPA

Illinois
Greenhouse Gas Emissions and Sinks Inventory Summary (17k pdf).

Indiana
Greenhouse Gas Emissions and Sinks Inventory Summary (82k pdf).

Iowa
Updated Greenhouse Gas Emissions and Sinks Inventory Summary (64k pdf).
Original Greenhouse Gas Emissions and Sinks Inventory Summary (17k pdf).

Kansas
Greenhouse Gas Emissions and Sinks Inventory Summary (16k pdf).

Kentucky
Greenhouse Gas Emissions and Sinks Inventory Summary(17k pdf).

Louisiana
Greenhouse Gas Emissions and Sinks Inventory Summary (131k pdf).
Link to Inventory of Greenhouse Gases in Louisiana (121k pdf).Exit EPA

Maine
Greenhouse Gas Emissions and Sinks Inventory Summary (16k pdf).

Maryland
Greenhouse Gas Emissions and Sinks Inventory Summary (81k pdf).

Massachusetts
Greenhouse Gas Emissions and Sinks Inventory Summary (81k pdf).

Michigan
Greenhouse Gas Emissions and Sinks Inventory Summary (63k pdf).

Minnesota
Greenhouse Gas Emissions and Sinks Inventory Summary (81k pdf).

Mississippi
Greenhouse Gas Emissions and Sinks Inventory Summary (15k pdf).

Missouri
Greenhouse Gas Emissions and Sinks Inventory Summary (15k pdf).

Montana
Greenhouse Gas Emissions and Sinks Inventory Summary (18k pdf).


Nevada
Greenhouse Gas Emissions and Sinks Inventory Summary (79k pdf).

New Hampshire
Greenhouse Gas Emissions and Sinks Inventory Summary (82k pdf).
Link to New Hampshire 1993 Greenhouse Gas Inventory.Exit EPA

New Jersey
Greenhouse Gas Emissions and Sinks Inventory Summary (16k pdf).

New Mexico
Greenhouse Gas Emissions and Sinks Inventory Summary (17k pdf).

New York
Greenhouse Gas Emissions and Sinks Inventory Summary (17k pdf).

North Carolina
Greenhouse Gas Emissions and Sinks Inventory Summary (82k pdf).
Link to North Carolina Greenhouse Gas Inventory Executive Summary.Exit EPA

Ohio
Greenhouse Gas Emissions and Sinks Inventory Summary (132k pdf).

Oklahoma
Updated Greenhouse Gas Emissions and Sinks Inventory Summary (61k pdf).
Original Greenhouse Gas Emissions and Sinks Inventory Summary (91k pdf).
Link to Inventory of Oklahoma Greenhouse Gas Emissions and Sinks: 1990 and 1999 (1.2 MB pdf)Exit EPA

Oregon
Greenhouse Gas Emissions and Sinks Inventory Summary (17k pdf).

Pennsylvania
Updated Greenhouse Gas Emissions and Sinks Inventory Summary (61k pdf).
Original Greenhouse Gas Emissions and Sinks Inventory Summary (15k pdf).

Puerto Rico
Greenhouse Gas Emissions and Sinks Inventory Summary (17k pdf).

Rhode Island
Greenhouse Gas Emissions and Sinks Inventory Summary (87k pdf).
Link to Rhode Island Greenhouse Gas Emissions Inventory.Exit EPA

Tennessee
Greenhouse Gas Emissions and Sinks Inventory Summary (15k pdf).

Texas
Greenhouse Gas Emissions and Sinks Inventory Summary (15k pdf).

Utah
Greenhouse Gas Emissions and Sinks Inventory Summary (16k pdf).
Link to Greenhouse Gas Inventory - 1990 and 1993.Exit EPA

Vermont
Greenhouse Gas Emissions and Sinks Inventory Summary (131k pdf).

Virginia
Link to Virginia Greenhouse Gas Emissions Inventory Project.Exit EPA

Washington
Greenhouse Gas Emissions and Sinks Inventory Summary (17k pdf).

West Virginia
Greenhouse Gas Emissions and Sinks Inventory Summary (61k pdf).

Wisconsin
Greenhouse Gas Emissions and Sinks Inventory Summary (16k pdf).

 
Associated Pages
State GHG Inventories
Energy CO2 Inventories
Inventory Guidance
See Also

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State Impacts

State Actions

State and Local Climate Change Outreach Material

 

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