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Comprehensive Energy Strategy (CES)

Under Section 16a-3d of the Connecticut General Statutes, the Department of Energy and Environmental Protection (DEEP) is charged with preparing a Comprehensive Energy Strategy (CES) for the state every four years. The CES examines future energy needs in the state and identifies opportunities to reduce costs for ratepayers, ensure reliable energy availability, and mitigate public health and environmental impacts of Connecticut's energy use, such as greenhouse gas (GHG) emissions and emissions of criteria air pollutants. In addition, Governor Lamont's Executive Order 21-3 directs DEEP to include in the next CES a set of strategies to: (a) provide for more affordable heating and cooling for Connecticut residents and businesses, (b) achieve reductions in GHG emissions from residential buildings and industrial facilities as needed to enable the state to meet the economy-wide GHG reduction targets for 2030 and 2050 established in the Global Warming Solutions Act, and (c) improve the resilience of the state's energy sector to extreme weather events, fuel commodity price spikes, and other disruptions.

In planning for effective management of Connecticut's energy supply, energy distribution, and energy demand -- including electricity, heating, cooling, and fuels used for transportation -- the CES provides recommendations for legislative and administrative actions that will aid in the achievement of interrelated environmental, economic, security, and reliability goals.

2022 Comprehensive Energy Strategy Proceeding

On January 6, 2022, DEEP issued a Notice of Proceeding and Scoping Meeting initiating its stakeholder process for development of the next CES. The 2022 CES will build on and/or potentially modify findings and recommendations of prior Comprehensive Energy Strategies released in 2013 and 2018.

Notice of Proceeding and Scoping Meeting

Participants interested in keeping up to date on this effort should email and ask to be put on the distribution list for the 2022 Comprehensive Energy Strategy.

2018 Comprehensive Energy Strategy

2018 Comprehensive Energy Strategy

Building Sector  

Electric Power Sector 

Transportation Sector 

Distributed Generation Cost Analysis 

Draft 2017 Comprehensive Energy Strategy - Executive Summary

Draft 2017 Comprehensive Energy Strategy

Notice of Technical Meetings, Public Meetings and Opportunity for Written Comments

2017 Comprehensive Energy Strategy Schedule

Stakeholder Engagement

Notice of Proceeding and Scoping Meeting

2016 CES Scoping Presentation

2016 CES Scoping Questions

Demand Response October 27, 2016 Meeting Presentations

Demand Resources in ISO New England Markets and Planning

NEEP Demand Resources in New England

Eversource Demand Resources

United Illuminating Demand Resources

Demand Resources-Priority Issues-EEB Technical Consultant

Public Comment Demand Resources-from cruis energy Smart Thermostat


2013 Connecticut Comprehensive Energy Strategy

Final 2013 Connecticut Comprehensive Energy Strategy (PDF)

Executive Summary (PDF)

Final 2013 Connecticut Comprehensive Energy Strategy - Appendices (PDF)

Final 2013 Connecticut Comprehensive Energy Strategy - Appendix F - Comments Grid (PDF)


To view filings select the link below:

DEEP Energy Web Filings

Any questions on the above-referenced processes should be addressed to

Content last updated January 2021