Power plants in Connecticut emitted 540.7 lb CO2e per MWh generated in 2023 (0.2452 kg/kWh), 30% cleaner than the US average, according to EPA's eGRID2023 state rate. Their generation was 37% carbon-free and 4% renewable. For GHG Protocol Scope 2 location-based reporting, use the eGRID subregion factor of each facility's ZIP (below), not the state rate: power flows across state lines within a subregion.
All of Connecticut's ZIP codes are in the NEWE (NPCC New England) eGRID subregion, whose Scope 2 factor is 543.178 lb CO2e/MWh (0.2464 kg/kWh).
Generation by power plants in Connecticut, 2023 (EPA eGRID2023 state resource mix).
Using the NEWE subregion factor (543.178 lb CO2e/MWh = 0.2464 kg/kWh). Source: EPA eGRID2023.
For GHG Protocol Scope 2 location-based emissions reporting, multiply each facility's electricity consumption by the emission factor for its ZIP code's eGRID subregion. All Connecticut ZIP codes use the NEWE factor: 543.178 lb CO2e/MWh.
curl "https://emission-factors.com/api/lookup?zip=YOUR_ZIP"
For Scope 2 reporting, it depends on the ZIP: all are in NEWE, 543.178 lb CO2e/MWh. EPA's state rate for plants in Connecticut is 540.7 lb CO2e/MWh, 30% cleaner than the US average.
Multiply the facility's annual kWh by the kg/kWh factor of its ZIP code's eGRID subregion (0.2464 for NEWE) to get kg CO2e, and divide by 1,000 for metric tonnes. The emission factors API returns the factor for any ZIP.
Power plants in Connecticut generated 37% carbon-free and 4% renewable electricity in 2023. At 541 lb CO2e/MWh, the state rate is 30% cleaner than the US average of 770.9 lb/MWh.
Get exact emission factors by ZIP code
33,700+ ZIP codes · All 27 eGRID subregions · CO2e, NOx, SO2, generation mix
Read the API docs · Scope 2 calculation guide