Connecticut Department of Energy & Environmental Protection

Integrated Resources Planning

Connecticut General Statutes §16a-3a requires that the Department of Energy and Environmental Protection (DEEP) prepare an Integrated Resource Plan (IRP). An IRP is comprised of an assessment of the future electric needs and a plan to meet those future needs. It is “integrated” in that it looks at both demand side (conservation, energy efficiency, etc.) resources as well as the more traditional supply side (generation/power plants, transmission lines, etc.) resources in making its recommendations on how best to meet future electric energy needs in the state.

2025 Integrated Resources Plan

The Connecticut Department of Energy and Environmental Protection (DEEP) has launched the development of the state’s next Integrated Resources Plan (IRP) to assess Connecticut’s growing electricity needs and identify pathways to meet these needs affordably and reliably for the state’s residents and businesses over the next ten years (2026-2035).Through this proceeding, DEEP will be utilizing a process for expanded stakeholder engagement that is inclusive and interactive, to ensure the strategies developed in this IRP are relevant and informed by the ideas, needs and priorities of stakeholders across the Connecticut and ISO New England electric sector landscape. This will include not only stakeholder involvement in electric sector modeling and scenario analysis, but also the release of white papers and convening of technical meetings on key topics during the course of the IRP proceeding.

To view the public notice of proceeding for further information describing this IRP process, please visit the link provided below. Additionally, DEEP requests written comments from the public regarding the scope of this next IRP as an initial part of its stakeholder engagement process with additional details also provided below for the submission of these comments. To view the IRP Notice of Proceeding, please visit: IRP-Notice-of-Proceeding-and-Scoping.pdf 

Instructions for Written Comments Submission Regarding Scope of IRP:

By way of this Notice, DEEP requests written comments regarding the scope of this IRP, the Transmission Solutions White Paper, and responses to the questions outlined below. Written comments may be filed electronically on DEEP’s website or submitted to DEEP.EnergyBureau@ct.gov with “Integrated Resources Plan Scoping Comments” in the subject line no later than March 31, 2025 at 4:00 PM EST. All materials submitted by stakeholders in this proceeding will be posted on DEEP’s Energy Filings page under the proceeding title “CT General Statutes – Section 16a-3a – 2025 Integrated Resources Plan.” Any questions can be directed to DEEP.EnergyBureau@ct.gov. 

Additional questions for consideration when preparing written comments are available via the IRP Notice of Proceeding accessible through the IRP Notice of Proceeding link provided above.

2025 Transmission Solutions White Paper

Concurrent with this notice of proceeding on the IRP, DEEP also announces the first of a series of white papers exploring key topics relevant to the IRP to affordably and reliably meet the energy needs of Connecticut over the next 10 years. The first of these white papers focuses on identifying concerns and opportunities to address issues facing Connecticut and the regional transmission infrastructure which it depends on. This Transmission Solutions White Paper can be accessed via the link provided below. DEEP also requests written comments regarding this white paper via the same solicitation for written comments detailed in the IRP Notice of Proceeding accessible via the link provided above.  

To view the transmission white paper, please visit: Transmission-White-Paper-Final.pdf  

Past IRPs
2022 IRP Procurement Plan Update
2020 IRP
2014 IRP

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Stay Connected

Click here to sign up for DEEP's Integrated Resource Planning (IRP) updates, announcements, notices of meetings and comment opportunities and more! 

Click here to view all DEEP Energy filings, including all documents, appendices and comments associated with the IRP.

Any questions on the above-referenced processes should be sent to DEEP.EnergyBureau@ct.gov.

Content last updated February 2025