Connecticut: Emissions and Emissions Reduction Targets

SOURCE: ENE analysis using EPA State Inventory Tool and State Greenhouse Gas Emissions Targets

This chart shows state emissions trends (historical and projected) and emissions reduction targets, offering a picture of Connecticut’s progress to date.

This chart shows total greenhouse gas emissions by sector, and tracks emissions trends in Connecticut from 1990 through 2010.

This chart presents Connecticut’s generation mix in 2001 and 2011, and clearly illustrates a shift toward natural gas and away from coal and petroleum.

Total state emissions have declined in the last decade, but transportation emissions have remained relatively high and now make up a larger percentage overall.

This chart compares motor gasoline emissions to forest sequestration/emissions in 2000 and 2010 to demonstrate how forests either add to or offset emissions.

All eight northeastern states have emissions reduction targets. In order to compare emissions trends with long-term targets, ENE extended EPA State Inventory Tool emissions projections out to 2050. According to ENE analysis and inventory data, Connecticut met its 2010 target, but additional emissions reductions will be necessary to meet 2020 and 2050 targets. 

As part of ClimateVision 2020, ENE completed comprehensive greenhouse gas inventories for the eight northeastern states. Connecticut’s electric power emissions have declined since 1990, but transportation sector emissions have remained relatively steady. Transportation emissions make up a significant portion of Connecticut’s overall emissions today, suggesting that the transportation sector is a key opportunity for achieving further emissions reductions. Connecticut’s in-state generation portfolio has shifted over the last decade, and this shift towards lower-carbon fuels is reflected in lower electric power sector emissions. Generation using natural gas has increased substantially, while generation from coal and petroleum fell between 2001 and 2011. 

The amount of carbon dioxide either stored or emitted by forests each year fluctuates according to harvest practices and changes in land use.  While Connecticut forests emitted carbon dioxide between 2000 and 2005, they are now removing enough to offset 27% of motor gasoline emissions.