Hampden County, MA interconnection queue
2 interconnection applications are pending in Hampden County, MA, requesting 295 MW of new generating capacity, as of 15 August 2026. 12 projects have been built here and 54 have been withdrawn since 1997.
Source: interconnection queues published by ISONE. Parsed and normalised by Watt Street. Data as of 15 August 2026. A queued project is a request, not a commitment.
What is waiting in Hampden County, by fuel
| Fuel | Projects | Capacity requested |
|---|---|---|
| Battery | 2 | 295 MW |
Outcomes of every application filed here
| Outcome | Projects | Capacity | Share |
|---|---|---|---|
| Built | 12 | 284 MW | 17.6% |
| Still pending | 2 | 295 MW | 2.9% |
| Withdrawn | 54 | 6.5 GW | 79.4% |
| Suspended | 0 | — | 0.0% |
Withdrawal is the ordinary outcome of an interconnection application nationally, not a sign of a problem in this county. Most withdrawals are a developer testing a site and moving on.
The largest projects on file
| Project | Fuel | Capacity | Status | Filed | Queue |
|---|---|---|---|---|---|
| Combined Cycle | Gas | 837 MW | withdrawn | 2014-12 | ISONE |
| CC Administrative Increase | Gas | 478 MW | withdrawn | 2011-08 | ISONE |
| Combined cycle (alt to Q442/472) | Gas | 431 MW | withdrawn | 2015-03 | ISONE |
| Regional Network Service Request | Nuclear | 395 MW | withdrawn | 2021-06 | ISONE |
| Combined Cycle | Gas | 388 MW | withdrawn | 2014-02 | ISONE |
| Pioneer Valley Energy Center | Gas | 353 MW | withdrawn | 2007-11 | ISONE |
| Battery Storage | Battery | 301 MW | withdrawn | 2023-03 | ISONE |
| Battery Storage | Battery | 300 MW | withdrawn | 2022-11 | ISONE |
| Combined Cycle | Gas | 280 MW | withdrawn | 2006-10 | ISONE |
| Battery Storage | Battery | 275 MW | withdrawn | 2022-12 | ISONE |
| MASSPOWER CNR Recovery | Gas | 256 MW | completed | 2014-05 | ISONE |
| Battery Storage | Battery | 251 MW | withdrawn | 2024-04 | ISONE |
| Battery Storage | Battery | 250 MW | active | 2023-03 | ISONE |
| Streamfield | Battery | 202 MW | withdrawn | 2021-04 | ISONE |
| Battery Storage | Battery | 202 MW | withdrawn | 2023-12 | ISONE |
How this county ranks
Hampden County ranks #808 of 1,607 US counties by capacity currently queued, and #9 of 12 in Massachusetts.
Other Massachusetts counties in the queue
| County | Pending | Capacity queued |
|---|---|---|
| Bristol County | 2 | 1.4 GW |
| Middlesex County | 5 | 1.3 GW |
| Suffolk County | 2 | 550 MW |
| Barnstable County | 1 | 500 MW |
| Norfolk County | 2 | 470 MW |
| Berkshire County | 2 | 426 MW |
| Essex County | 2 | 425 MW |
| Worcester County | 2 | 384 MW |
Go deeper on Hampden County
The interactive map plots every one of these applications, and a generated county report puts them in a sourced PDF with the date each figure was true on every page.
Open Hampden County on the map County reports All of Massachusetts