Interconnection queue data
Massachusetts interconnection queue
464 interconnection requests have been filed at points of interconnection in Massachusetts since 2000, totalling 64 GW. Of that capacity, 6.9% reached commercial operation and 75.6% withdrew.
GridVision AI ResearchPublished Updated
Headline figures
- 64 GW
- of capacity requested in Massachusetts since 2000
- 6.9%
- of it reached commercial operation; 75.6% withdrew
- 38 GW
- filed in the last six years (279 requests), of which 18.7% is still in the queue
Which markets Massachusetts requests sit in
A state is a location, not a market. Requests at Massachusetts points of interconnection are studied by the market that runs the queue there, and the process differs between them.
| Market | Requests | Capacity filed | Reached operation | Withdrew | Outcome by capacity |
|---|---|---|---|---|---|
| ISO-NE | 464 | 64 GW | 6.9% | 75.6% |
Process pages: ISO-NE.
By resource type
| Resource | Requests | Capacity filed | Reached operation | Withdrew | Outcome by capacity |
|---|---|---|---|---|---|
| Battery | 168 | 26 GW | 7.7% | 69.9% | |
| Hybrid | 155 | 11 GW | 12.3% | 87.6% | |
| Solar | 64 | 692 MW | 18.5% | 80.5% | |
| Wind | 37 | 21 GW | 0.2% | 73.8% | |
| Other | 21 | 536 MW | 8.8% | 91.2% | |
| Gas | 19 | 5 GW | 16.3% | 83.7% |
Hybrid covers requests the dataset records as a combination, such as solar plus battery.
By year filed
- 200020 MW
- 2001454 MW
- 2003137 MW
- 2005354 MW
- 20062 GW
- 20073 GW
- 2008370 MW
- 20091 GW
- 201087 MW
- 2011788 MW
- 2012726 MW
- 2013440 MW
- 20142 GW
- 20153 GW
- 20162 GW
- 20173 GW
- 20183 GW
- 20194 GW
- 20205 GW
- 202110 GW
- 20228 GW
- 20239 GW
- 20246 GW
- 20255 MW
Recent years are unsettled: requests filed in the last few years may still be built or withdrawn.
Points of interconnection with the most requests
- Eversource Industrial Park 6363 requests in the dataset
- Mystic 115kV3 requests in the dataset
- Eversource 345kV West Barnstable (921)3 requests in the dataset
- Eversource Crystal Spring 6463 requests in the dataset
- National Grid's Brayton Point 345kV Substation, Somerset MA.3 requests in the dataset
- kV bus at Millbury substation3 requests in the dataset
Names are as the dataset records them, so spelling variants of one station can appear separately.
Method and limits
Each request is counted once, at the capacity and status the dataset records for it, and placed in the state the dataset gives for its point of interconnection. Requests missing a state, status, filing year or capacity are left out. The dataset records outcomes and dates, not reasons, so nothing here says why a request withdrew, and no share is a rate to plan against.
For the same record filtered your own way, use the queue explorer; for national tables and time-to-build figures, see queue statistics.
Source: Lawrence Berkeley National Laboratory, Queued Up: 2026 Edition, data file through 2025, CC BY 4.0. Computed September 18, 2026.
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