​​​​Maryland is committed to finding real bipartisan, common-sense solutions to protect our environment, combat climate change, and improve our air quality. By working together, we are showing that it is possible to find consensus to protect our natural resources, promote clean energy, and grow our economy for current and future generations.

Regional Greenhouse Gas Initiative (RGGI) in Maryland

About The Regional Greenhouse Gas Initiative (RGGI) 

​RGGI is a ​cooperative, market-based effort among the states of Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Rhode Island, Vermont, and Virginia to cap and reduce CO2 emissions from the power sector. It represents the first cap-and-invest regional initiative implemented in the United States. Read the RGGI 101 Fact Sheet​.

Visit: RGGI News

On February 2, 2021, the RGGI states released a statement announcing the plan for the Third Program Review, and in Summer 2021 the states released a preliminary timeline for conducting the Third Program Review. Note that this timeline is subject to change and may be revised over time.
To support the Third Program Review, the states will:
  • ​Conduct technical analyses, including electricity sector modeling, to inform decision-making related to core Program Review topics, such as the regional CO2 emission cap.
  • Solicit input from communities, affected groups, and the general public on the Program Review process and timeline, core topics and objectives, modeling assumptions and results, and other policy and design considerations.
  • Convene independent learning sessions with experts and other interested parties on key design elements.

Visit: The Model Rule     ​

RGGI I​​n Maryland


Science has demonstrated with a high degree of certainty that Earth's climate is being altered by human activities, principally by the emission of heat-trapping greenhouse gases (GHGs), such as carbon dioxide (CO2), into the atmosphere.

The actions Maryland takes to mitigate climate change at the state level are integral to protecting the future and prosperity of not only the state of Maryland but also the United States and the global community. 

The RGGI program is a central component of Maryland's GHG reduction strategy. As the first program of its kind in the United States, RGGI serves as a model and inspiration to other states and regions to either participate in RGGI or implement their own regional CO2 trading initiatives.​

Program Overview

RGGI is a cooperative effort by eleven northeast and mid-Atlantic states to reduce CO2 emissions generated by fossil fuel-fired power plants while benefiting the regional economy. Guiding the program are the shared commitments to reducing CO2 and allowing flexibility and autonomy among the states. Maryland has participated in RGGI since its inception. 

RGGI is structured as a "cap and invest" program, with a regional cap or limit on CO2 emissions that declines by a certain amount annually. The states establish individual emission budgets, which they distribute as "allowances" permitting the holder to emit one short ton (2,000 lbs.) of CO2 per allowance. The regional cap consists of the sum of the states' emission budgets. Each participating state has developed its own program and regulations based on the blueprint provided by the RGGI Model Rule. States sell a majority of emission allowances at regional quarterly auctions, and auction proceeds then fund various state and local programs which promote consumer benefits like energy efficiency, renewable energy, and bill assistance.





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