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Distribution Group Studies
What is a Group Study?
We are performing distribution group studies in Massachusetts to efficiently process and analyze distributed generation (DG) applications that allow complimentary group solutions to be shared by DG customers. The group study looks at the collective impact on the system to understand what system modifications would be required to support these DG projects when interconnected.
Refer to the following resources for more information about our group studies. Todos los archivos están en formato PDF.
- Distribution group study frequently asked questions
- Overview of group study process
- Impact study phases
- Capital Investment Project (CIP) frequently asked questions
- Group study project change process
- Substations included in the group studies
- Department of Public Utilities (DPU) Provisional Program Guide
- Department of Public Utilities (DPU) Dashboard - Docket Information
Capital Investment Project (CIP) Fee Approved Group Study Areas - Eastern Massachusetts
| Group | Final SIS Date +/- 25% Cost Estimate | Customer Notification (10 business days after completion) | CIP Proposal Deadline (40 business days after completion) | CIP Fee (Dollars/kW) |
|---|---|---|---|---|
| Marion-Fairhaven 001 | Completed 3/29/2022 | Completed 3/28/2022 | Approved 12/31/2022 | $370/kW |
| Marion-Fairhaven 002 | Completed 4/2/2025 | Completed 4/2/2025 | Approved 12/31/2022 | $370/kW |
| Plymouth 001 | Completed 4/19/2022 | Completed 4/19/2022 | Approved 6/4/2024 | $224/kW |
| Plymouth 002 | Completed 1/24/2025 | Completed 1/24/2025 | Approved 6/4/2024 | $224/kW |
| Cape 001 | Completed 4/25/2022 | Completed 4/25/2022 | Approved 6/4/2024 | $357/kW |
| Cape 002 | Completed on 10/8/2025 | Completed on 10/8/2025 | Approved 6/4/2024 | $357/kW |
| Dartmouth Westport 001 | Completed 4/8/2022 | Completed 4/8/2022 | Approved 6/4/2024 | $387/kW |
Capital Investment Project (CIP) Fee Approved Group Study Areas - Western Massachusetts
| Group | Final SIS Date +/- 25% Cost Estimate | Customer Notification (10 business days after completion) | CIP Proposal Deadline (40 business days after completion) | CIP Fee (Dollars/kW) |
|---|---|---|---|---|
| Blandford 001 | Completed 4/4/2022 | Completed 4/4/2022 | Approved 6/4/2024 | $498/kW |
| Blandford 002 | Completed on 11/18/2025 | Completed on 11/18/2025 | Approved 6/4/2024 | $498/kW |
In Process Group Study Areas - Eastern Massachusetts
| Area | Date Group Opened | Total Projects Invited | Total Opt Ins | Opt in MW |
|---|---|---|---|---|
| New Bedford 001 | Completed 5/11/2022 | 14 | 8 | 25.2 |
In Process Group Study Areas - Western Massachusetts
| Area | Date Group Opened | Total Projects Invited | Total Opt Ins | Opt in MW |
|---|---|---|---|---|
| Southwick 001 | Completed 5/9/2024 | 6 | 6 | 24 |
| Gill-Montague 001 (Whately-Deerfield) | Completed 5/10/2024 | 11 | 9 | 34.9 |
| Berkshire 001 (Dalton-Hinsdale) | Completed 5/10/2024 | 4 | 3 | 15 |
Account Executive Support
Eastern Massachusetts: melanie.khederian@eversource.com
Western Massachusetts: brandon.natale@eversource.com and melanie.khederian@eversource.com
Group Updates
Select an area to see updates. Todos los archivos están en formato PDF.
Cape Cod
Dartmouth-Westport
Freetown
Marion-Fairhaven
New Bedford
Plymouth
Plainfield-Blandford
Southwick
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 that transmission studies are needed for many distributed generation projects interconnecting to Eversource's infrastructure. Learn about the studies.