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Distribution Group Studies

Eversource is performing distribution group studies to efficiently process and analyze distributed generation (DG) applications that allow complimentary group solutions to be shared by DG customers.

Customers eligible to be part of group studies will be notified and asked to opt in or out of these studies within a specific time frame in order to keep the study and other participants on schedule for completion.

Distribution Group Studies Process

Current Phase: Holding kickoff meetings with customers on a per group basis for study commencement  

Download: Overview of group study process

Download: Impact Study phases

Thinking about making a change to your project? Check out the Group Studies project change process and associated requirements here.

Eastern Massachusetts Group Study Areas

Area Total Projects Invited Total Opt Ins Opt In MW Study Timeframe
Cape Cod 61 59 72.4 160
Dartmouth-Westport 19 6 16.0 160
Freetown 6 6 23.3 160
Marion-Fairhaven 28 17 48.1 160
New Bedford 17 14 48.9 160
Plymouth 54 41 116.6 160

Western Massachusetts Group Study Areas

Area Total Projects Invited Total Opt Ins Opt In MW Study Timeframe
Plainfield-Blandford 8 3 13.7 125

Frequently Asked Questions

What is a Group Study

A group study is a distribution analysis consisting of multiple distributed generation (DG) projects and their collective impact on the system, to understand what system modifications would be required to support these DG projects when interconnected. When done on an individual project basis, this analysis is referred to as an impact study.

I received a notification on June 12th that my project will be part of the group study. How do I know which project is being included? 

After the general notification went out, customers received a project specific, individual follow up with the work order number/application ID that was invited to be part of the Group Study.


DPU Group Studies Docket

Access the Massachusetts Department of Public Utilities (DPU) docket of group studies.

Affected System Operator Studies

ISO-New England has determined transmission studies are needed for many distributed generation projects interconnecting to Eversource's infrastructure.

Learn more