Northeast

Connecticut

Connecticut established the nation’s first green bank in 2011 and has since leveraged more than $2.43 billion of clean energy investments into the state’s economy. From 2001-2021, the state reduced greenhouse gas emissions by 17%. Connecticut has no fossil fuel reserves but more than half of the state’s generated electricity is sourced from natural gas. Connecticut uses less energy per-capita than 46 other states.

GHG Reduction Targets

All targets relative to 2001 levels

2030

45%

2050

80%

Governor

Ned Lamont (Democrat)

House Party

Democratic Supermajority

Senate Party

Democratic Supermajority

Legislative session

1/8/25 - 6/4/25

US Climate Alliance Status

Member

Key Offices & Links

30

Policies Enacted or In Progress

across 6 policy areas

See all

32

Policy Opportunities

across 7 policy areas

See all

Northeast

9 states

This map shows the occurrence of climate policies passed at the state-level. Higher numbers represent more climate policies enacted.

Compare with other states

Progress by Policy Area

Enacted Enacted policies have been passed or established in a state by a governing body via legislation, executive orders, rules, regulations, and/or other program creation, and remain in effect.
In-progress In progress policies have been established in a state, but final regulations, rules, or plans are pending final approval. This also includes legislation and executive orders that require regulations to be put into effect.
Partially Enacted Partially enacted policies have been enacted in the state, but are missing one or more policy components. Dashboard policies cannot be considered partially enacted unless policy components are available.
Not Enacted Not enacted policies have not been passed or established in the state or are no longer in effect.

Glossary of Terms

The colored bars indicate the status for each policy on the Dashboard, viewed across seven policy areas.

Status	Policy	Policy Area	Policy Category	Year Enacted
Enacted	Residential Energy Codes	Buildings and Efficiency	Building Codes	2022
Empty column	The statewide energy code for residential construction is 2021 IECC with amendments.	Establishing Policies Connecticut State Energy Code (2022)
Enacted	Commercial Energy Codes	Buildings and Efficiency	Building Codes	2022
Empty column	The statewide energy code for commercial building construction is 2021 IECC and ASHRAE 90.1-2019.	Establishing Policies Connecticut State Energy Code (2022)
Not Enacted	Stretch Building Energy Codes	Buildings and Efficiency	Building Codes
Empty column	Stretch building energy codes are an optional, more stringent building code established by the state that local jurisdictions can adopt to require that newly constructed buildings are more efficient than the baseline state codes.
Enacted	Appliance Standards	Buildings and Efficiency	Building Standards	2011
Empty column	The Small Product and Appliance Energy Efficiency Standards apply to 21 products.	Establishing Policies C.G.S. Section 16a-48, Chapter 298 (2011) Executive Order 21-3 (2021) Product Efficiency Standards
Not Enacted	Building Performance Standards	Buildings and Efficiency	Building Standards
Empty column	Building performance standards establish energy and/or greenhouse gas performance targets for existing buildings in a state. These targets increase in stringency over time, leading to efficiency improvements in buildings to conserve energy and reduce emissions.
Not Enacted	Clean Heat Standards	Buildings and Efficiency	Building Standards
Empty column	Clean heat standards establish a performance standard requiring heat providers to deliver a gradually-increasing percentage of low-emission heating services to customers.
Enacted	Energy Efficiency Resource Standards (EERS)	Buildings and Efficiency	Building Efficiency	2024
Empty column	Electric utilities are required to achieve annual energy savings of 233 gigawatt hours (GWh) for 2025-2027. Gas utilities are required to achieve annual energy savings of 1,349 million cubic feet (MMcf) for 2025-2027.	Establishing Policies Connecticut General Statutes § 16-245(m) (2014) Connecticut General Statutes § 16-32(f) (2015) 2025-2027 Conservation & Load Management Plan (2024)
Enacted	Property Assessed Clean Energy (PACE)	Buildings and Efficiency	Building Efficiency	2012
Empty column	Connecticut has enacted commercial PACE-enabling legislation and has active programs.	Establishing Policies SB 501 (2012)
Partially Enacted	Weatherization Funding	Buildings and Efficiency	Building Efficiency
Empty column	The State Policy Opportunity Tracker (SPOT) breaks clean energy policies down into “components”, which are binary questions to evaluate policy quality. Higher quality policies have more of their SPOT components fulfilled.	Establishing Policies SPOT - Weatherization Funding in Connecticut	Policy Components not-enacted enacted enacted enacted 3/4
Not Enacted	All-Electric Buildings	Buildings and Efficiency	Building Electrification
Empty column	All-electric buildings policies require new buildings to be constructed with all-electric heating, cooling, and cooking systems to transition away from fossil-fuel use in buildings.

Connecticut

Key Offices & Links

30

32

Northeast

Progress by Policy Area

Climate Governance and Equity

Cross-Sector

Electricity

Buildings and Efficiency

Transportation

Industry, Materials, and Waste Management

Natural and Working Lands

Greenhouse Gas Emissions Projections in Connecticut

Climate Policies in Connecticut