The RGGI CO2 cap represents a regional budget for CO2 emissions from the power sector.
The RGGI cap is equal to the total number of CO2 allowances issued by RGGI States in a given year. A CO2 allowance represents a limited authorization to emit one short ton of CO2 from a regulated source, as issued by a participating state.
The initial regional CO2 emissions budget was set based on an analysis of 2000-2004 power plant CO2 emissions and an anticipated increase in CO2 emissions prior to the beginning of the program in 2009. This regional CO2 emissions budget was apportioned among the RGGI States. Together, the individual state CO2 emissions budgets comprise the regional CO2 emissions cap.
From 2009-2014, the RGGI cap was designed to stabilize power sector CO2 emissions in the RGGI States. From 2009-2011, the cap was 188 million short tons of CO2 per year for the ten-state region. The cap is currently 165 million short tons of CO2 per year for the nine-state region.
The Participating States have conducted a comprehensive program review of the CO2 Budget Trading Programs. Proposed amendments to RGGI have been incorporated in an Updated Model Rule released on February 7, 2013. The Updated Model Rule will guide each state as it follows its own statutory and/or regulatory procedures to propose updates to its CO2 Budget Trading Program. More information on the Updated Model Rule and accompanying materials is available at http://www.rggi.org/design/program_review.
CO2 Data for RGGI Units 2000-2008
The table below shows historical CO2 emissions data from regulated power plants in Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Rhode Island, and Vermont from 2000-2008. Blue cells to the left show annual CO2emissions for each state. Purple cells to the right show annual emissions expressed as "three year averages" (i.e. average annual emissions between 2000 and 2002, rather than actual emissions for 2000, 2001, and 2002).
Quarterly emissions data for the current control period is available through the Emissions Report in RGGICOATS.
This chart is also available by Excel Download(Updated 11/18/09), which also includes plant-specific emissions for each state.