DEEP is continuing to carry out its mission and provide services while keeping both the public and our workforce safe during the COVID-19 pandemic. Click here for the latest updates on DEEP's response to COVID-19. DEEP COVID-19 Response

2018 Comprehensive Energy Strategy (CES)

The Department of Energy and Environmental Protection (DEEP) has prepared an update to the CES to advance the State’s goal to create a cheaper, cleaner, more reliable energy future for Connecticut’s residents and businesses. By statute, DEEP is required to periodically update the CES to assess and plan for all energy needs in the state, including, but not limited to, electricity, heating, cooling and transportation.

2018 Comprehensive Energy Strategy 

Building Sector  

Electric Power Sector 

Transportation Sector 

Distributed Generation Cost Analysis 



Comprehensive Energy Strategy Background

In 2012, the Department of Energy and Environmental Protection (DEEP) developed the first-ever Comprehensive Energy Strategy (CES) for the State of Connecticut – an assessment and Strategy for all residential, commercial, and industrial energy issues, including energy efficiency, industry, electricity, natural gas, and transportation. 

2017 Comprehensive Energy Strategy

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


If you are interested in being on the list to participate or receive updates on the development of the Strategy, please complete the Stakeholder Request Form and submit to the address indicated on the form.


Stakeholder Request Form:  (Word)     (PDF)


2013 Connecticut Comprehensive Energy Strategy - Final

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 2020