Each RGGI State's environmental regulatory agency uses RGGI COATS to determine compliance with state CO2 Budget Trading Program regulations.
Under each RGGI State’s CO2 Budget Trading Program, each regulated power plant (CO2 budget source) must hold one CO2 allowance for each ton of CO2 emitted during the preceding three-year control period. A CO2 allowance represents a limited authorization to emit one ton of CO2, as issued by a respective State.
The first control period for fossil fuel-fired electric generators took effect on January 1, 2009 and extends through December 31, 2011. The deadline for CO2 budget sources to provide CO2 allowances for compliance and to certify compliance for the first control period was 11:59 PM ET on March 1, 2012.