The Regional Greenhouse Gas Initiative, abbreviated RGGI or ReGGIe, is an initiative by states and provinces in the Northeastern United States region to reduce greenhouse gas emissions:
The RGGI has a carbon trading program that covers emissions from power plants, and they are already doing auctions.
There are two categories of members: participants (shown in dark gray above), and observers. The participants are:
The observers are:
Pennsylvania is a large producer of coal. Ontario and Québec are members of the Western Climate Initiative.