• At least 21 states have GHG reporting requirements that differ from the federal GHG reporting requirements.

At least 21 states have greenhouse gas (GHG) reporting requirements that differ from the federal GHG reporting requirements. For example, Washington State’s Clean Air Rule calls for industries to report on 10,000 metric tons or more of carbon dioxide (CO₂) or CO₂ equivalents — by contrast, the federal reporting threshold is 25,000 metric tons or more of CO₂ equivalents. North Carolina, however, encourages but does not require GHG reporting from large, permitted facilities.

Some states piggyback off the federal GHG Reporting Program (GHGRP) and extract state-specific data from the report, and states may also have GHG reporting deadlines that are different from the annual federal deadline of March 31.

The bottom line is that the company must know whether the state has additional GHG reporting requirements for the industry or the facility’s emissions. The following states have different or additional GHGRP requirements:

• California
• Colorado
• Connecticut
• Delaware
• Florida
• Hawaii
• Iowa
• Maine
• Maryland
• Massachusetts
• Minnesota
• New Hampshire
• New Jersey
• New Mexico
• New York
• North Carolina
• Oregon
• Pennsylvania
• Rhode Island
• Washington
• West Virginia