Massachusetts Interconnection Projects
interXdata tracks 1,629 interconnection projects in Massachusetts representing 109,704 MW of requested capacity. The dominant technology by capacity is Battery. The most active counties are Worcester, Hampden, Plymouth.
1,629Total projects
54Active
1,095Operational
464Withdrawn
109,704 MWRequested capacity
10,827 MWActive capacity
Technology mix
| Technology | Projects | Requested capacity |
|---|---|---|
| Battery | 320 | 27,415 MW |
| Wind | 76 | 27,038 MW |
| Other | 278 | 25,992 MW |
| Gas | 202 | 25,888 MW |
| Solar | 645 | 2,230 MW |
| Solar+Battery | 108 | 1,141 MW |
Counties
| County | Projects | Requested capacity |
|---|---|---|
| Worcester | 345 | 8,816 MW |
| Hampden | 196 | 8,464 MW |
| Plymouth | 152 | 7,995 MW |
| Bristol | 152 | 9,072 MW |
| Middlesex | 141 | 13,263 MW |
| Norfolk | 102 | 8,417 MW |
| Berkshire | 101 | 4,946 MW |
| Franklin | 84 | 3,806 MW |
| Hampshire | 77 | 692 MW |
| Essex | 73 | 3,677 MW |
| Suffolk | 72 | 5,912 MW |
| Barnstable | 68 | 4,027 MW |
| Dukes | 6 | 814 MW |
| Nantucket | 3 | 22 MW |
| Somerset | 2 | 18 MW |
| Suffolk/Barnstable | 2 | 0 MW |
| Wocester | 1 | 153 MW |
| Franklin And Bershire | 1 | 0 MW |
| Middlesex/Worcester | 1 | 9 MW |
| Franklin And Berkshire | 1 | 0 MW |
| Berkshire & Franklin | 1 | 28 MW |
| Middlesex/Norfolk | 1 | 17 MW |
| Franklin/Hampshire | 1 | 9 MW |
| Hampden/Franklin | 1 | 8 MW |
Largest projects
| Project | Queue ID | Technology | Capacity | Status | Location |
|---|---|---|---|---|---|
| CNR Increase | 474 | Gas | 1,600.0 MW | withdrawn | Middlesex, Massachusetts |
| 345 kV AC line | 625 | — | 1,600.0 MW | withdrawn | Bristol, Massachusetts |
| Offshore wind | 1119 | Wind | 1,320.0 MW | withdrawn | Massachusetts |
| Offshore wind | 1451 | Wind | 1,309.0 MW | withdrawn | Massachusetts |
| Offshore Wind CNR only | 1500 | Wind | 1,249.5 MW | withdrawn | Massachusetts |
| Offshore Wind | 1343 | Wind | 1,200.0 MW | withdrawn | Massachusetts |
| HVDC from ME to MA (MA import only) | 569 | — | 1,200.0 MW | withdrawn | Plymouth, Massachusetts |
| 1200 MW HVDC Line (controllable) Into Mystic | 873 | — | 1,200.0 MW | withdrawn | Middlesex, Massachusetts |
| Offshore wind | 1121 | Wind | 1,200.0 MW | withdrawn | Massachusetts |
| Offshore Wind | 1225 | Wind | 1,200.0 MW | withdrawn | Massachusetts |
| 1200 MW DC Transmission Line | 1158 | — | 1,200.0 MW | withdrawn | Massachusetts |
| Offshore Wind | 1059 | Wind | 1,200.0 MW | withdrawn | Massachusetts |
| AC to HVDC Tie | 512 | — | 1,200.0 MW | withdrawn | Middlesex, Massachusetts |
| Enable 1200 MW injection at Mystic | 1332 | — | 1,200.0 MW | withdrawn | Massachusetts |
| 1200 MW DC Transmission Line | 1157 | — | 1,200.0 MW | withdrawn | Massachusetts |
| SouthCoast Wind 1 | 1116 | Wind | 1,200.0 MW | active | Massachusetts |
| Offshore Wind | 1297 | Wind | 1,200.0 MW | withdrawn | Massachusetts |
| Bay State Wind 4 Offshore Wind | 944 | Wind | 1,200.0 MW | active | Massachusetts |
| Somerset Wind Link - 1200 MW HVDC Line (Controllable) into Brayton Point | 837 | — | 1,200.0 MW | active | Bristol, Massachusetts |
| 1200 MW controllable ETU - unidirectional | 1411 | — | 1,200.0 MW | withdrawn | Middlesex, Massachusetts |
| Northfield Mt. Equipment Replacement | 217 | Other | 1,180.0 MW | operational | Franklin, Massachusetts |
| HVDC Line | 509 | — | 1,100.0 MW | withdrawn | Middlesex, Massachusetts |
| Combined Cycle | 580 | Gas | 1,020.0 MW | withdrawn | Worcester, Massachusetts |
| HVDC Line | 511 | — | 1,000.0 MW | withdrawn | Barnstable, Massachusetts |
| Internal HVDC - North to South flow | 506 | — | 1,000.0 MW | withdrawn | Suffolk, Massachusetts |
| 1000 MW HVDC (import only) | 640 | — | 1,000.0 MW | withdrawn | Plymouth, Massachusetts |
| HVDC Line | 510 | — | 1,000.0 MW | withdrawn | Plymouth, Massachusetts |
| HVDC from S. Maine to Mystic - bidirectional flow | 517 | — | 1,000.0 MW | withdrawn | Middlesex, Massachusetts |
| HVDC from S. Maine to K Street - bidirectional fl | 518 | — | 1,000.0 MW | withdrawn | Suffolk, Massachusetts |
| HVDC Tie NB to Mystic | 585 | — | 900.0 MW | withdrawn | Middlesex, Massachusetts |
Top developers in Massachusetts
Developer attribution is not yet resolved for this set.
Recent material changes
No material field-level changes have been recorded against these projects since the baseline snapshot. interXdata records changes as new source snapshots are ingested and diffed.
Explore related data
Source last checked2026-07-31
Data last materially changed2026-08-27
Page data generated2026-08-27
Provenance: U.S. EIA — Form EIA-860M generator inventory (operating + planned); isone-irtt. Values are normalized from public source records into the interXdata canonical warehouse; see each source for original filings.
Get notified when a new project appears in Massachusetts.
Start tracking with interXdata