Connecticut Transportation Data for Alternative Fuels and Vehicles

Find transportation data and information about alternative fuels and advanced vehicles in Connecticut, including laws and incentives, fueling stations, fuel prices, and more.

Clean Cities Coalitions

Clean Cities builds partnerships to advance alternative fuels and energy-efficient vehicle technologies through a national network of more than 75 coalitions.

Connecticut has 3 coalitions:

Capitol Clean Cities of Connecticut

Connecticut Southwestern Area Clean Cities

Greater New Haven Clean Cities Coalition

Contact a local coalition or regional manager for project assistance or to connect with other local stakeholders.

Transportation Fuel Consumption

Source: State Energy Data System based on beta data converted to gasoline gallon equivalents of petroleum (GGEs) for the transportation sector (which includes more than highway vehicles) from the U.S. Energy Information Administration

Vehicles Registered in 2022

Electric (EV) 22,000
Plug-In Hybrid Electric (PHEV) 13,100
Hybrid Electric (HEV) 64,500
Biodiesel 10,100
Ethanol/Flex (E85) 139,800
Compressed Natural Gas (CNG) 200
Propane 0
Hydrogen 0
Methanol 0
Gasoline 2,636,300
Diesel 44,100
Unknown Fuel 21,200

Source: Light-duty vehicle registration counts from TransAtlas with data from Experian Information Solutions


Regional Fuel Prices

Average fuel prices as of July 2023

Fuel New England Region National Average
per unit sold per GGE per unit sold per GGE
Biodiesel (B20) $3.77/gallon $3.43/GGE $3.77/gallon $3.43/GGE
Biodiesel (B99–B100) $3.70/gallon $3.66/GGE $4.53/gallon $4.48/GGE
Ethanol (E85) $4.27/gallon $6.02/GGE $2.95/gallon $4.16/GGE
Natural Gas (CNG) $3.89/GGE $3.89/GGE $2.86/GGE $2.86/GGE
Propane $3.24/gallon $4.47/GGE $3.25/gallon $4.49/GGE
Gasoline $3.60/gallon $3.60/GGE $3.59/gallon $3.59/GGE
Diesel $4.17/gallon $3.75/GGE $3.88/gallon $3.49/GGE

Source: Average prices per gasoline gallon equivalent (GGE) for the New England PADD from the Alternative Fuel Price Report

Electricity Sources and Vehicle Emissions

Source: Electricity Sources and Emissions Tool based on assumptions with 2021 data from EIA