Massachusetts Interconnection Projects
interXdata tracks 1,639 interconnection projects in Massachusetts representing 109,740 MW of requested capacity. The dominant technology by capacity is Battery. The most active counties are Worcester, Hampden, Plymouth.
1,639Total projects
59Active
1,100Operational
464Withdrawn
109,740 MWRequested capacity
10,852 MWActive capacity
Technology mix
| Technology | Projects | Requested capacity |
|---|---|---|
| Battery | 324 | 27,427 MW |
| Wind | 76 | 27,038 MW |
| Other | 278 | 25,992 MW |
| Gas | 202 | 25,888 MW |
| Solar | 651 | 2,254 MW |
| Solar+Battery | 108 | 1,141 MW |
Counties
| County | Projects | Requested capacity |
|---|---|---|
| Worcester | 348 | 8,822 MW |
| Hampden | 197 | 8,469 MW |
| Plymouth | 154 | 8,005 MW |
| Bristol | 153 | 9,080 MW |
| Middlesex | 144 | 13,270 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 |
| Suffolk/Barnstable | 2 | 0 MW |
| Somerset | 2 | 18 MW |
| Franklin And Bershire | 1 | 0 MW |
| Wocester | 1 | 153 MW |
| Middlesex/Worcester | 1 | 9 MW |
| Berkshire & Franklin | 1 | 28 MW |
| Franklin And Berkshire | 1 | 0 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 |
|---|---|---|---|---|---|
| 345 kV AC line | 625 | — | 1,600.0 MW | withdrawn | Bristol, Massachusetts |
| CNR Increase | 474 | Gas | 1,600.0 MW | withdrawn | Middlesex, Massachusetts |
| Offshore wind | 1119 | Wind | 1,320.0 MW | withdrawn | Massachusetts |
| Offshore wind | 1451 | Wind | 1,309.0 MW | withdrawn | Massachusetts |
| Offshore Wind CNR only | 1500 | Wind | 1,249.5 MW | withdrawn | Massachusetts |
| 1200 MW DC Transmission Line | 1157 | — | 1,200.0 MW | withdrawn | Massachusetts |
| Enable 1200 MW injection at Mystic | 1332 | — | 1,200.0 MW | withdrawn | Massachusetts |
| Somerset Wind Link - 1200 MW HVDC Line (Controllable) into Brayton Point | 837 | — | 1,200.0 MW | active | Bristol, Massachusetts |
| 1200 MW DC Transmission Line | 1158 | — | 1,200.0 MW | withdrawn | Massachusetts |
| Offshore wind | 1121 | Wind | 1,200.0 MW | withdrawn | Massachusetts |
| Offshore Wind | 1225 | Wind | 1,200.0 MW | withdrawn | Massachusetts |
| 1200 MW controllable ETU - unidirectional | 1411 | — | 1,200.0 MW | withdrawn | Middlesex, Massachusetts |
| Offshore Wind | 1059 | Wind | 1,200.0 MW | withdrawn | Massachusetts |
| Bay State Wind 4 Offshore Wind | 944 | Wind | 1,200.0 MW | active | Massachusetts |
| Offshore Wind | 1297 | Wind | 1,200.0 MW | withdrawn | Massachusetts |
| SouthCoast Wind 1 | 1116 | Wind | 1,200.0 MW | active | Massachusetts |
| HVDC from ME to MA (MA import only) | 569 | — | 1,200.0 MW | withdrawn | Plymouth, Massachusetts |
| AC to HVDC Tie | 512 | — | 1,200.0 MW | withdrawn | Middlesex, Massachusetts |
| 1200 MW HVDC Line (controllable) Into Mystic | 873 | — | 1,200.0 MW | withdrawn | Middlesex, Massachusetts |
| Offshore Wind | 1343 | Wind | 1,200.0 MW | withdrawn | 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 from S. Maine to Mystic - bidirectional flow | 517 | — | 1,000.0 MW | withdrawn | Middlesex, Massachusetts |
| HVDC Line | 511 | — | 1,000.0 MW | withdrawn | Barnstable, Massachusetts |
| 1000 MW HVDC (import only) | 640 | — | 1,000.0 MW | withdrawn | Plymouth, Massachusetts |
| HVDC from S. Maine to K Street - bidirectional fl | 518 | — | 1,000.0 MW | withdrawn | Suffolk, Massachusetts |
| Internal HVDC - North to South flow | 506 | — | 1,000.0 MW | withdrawn | Suffolk, Massachusetts |
| HVDC Line | 510 | — | 1,000.0 MW | withdrawn | Plymouth, 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
| Observed | Project | Field | Old | New |
|---|---|---|---|---|
| 2026-10-02 | Framingham BESS | proposed_online_date | 2026-09-01 | 2026-10-01 |
| 2026-10-02 | Chicopee BESS | proposed_online_date | 2026-09-01 | 2026-10-01 |
| 2026-10-02 | Solar Carver 1 Hybrid | proposed_online_date | 2026-09-01 | 2026-10-01 |
| 2026-10-02 | Solar Carver 1 Hybrid | proposed_online_date | 2026-09-01 | 2026-10-01 |
| 2026-10-02 | Solar Carver 3 Hybrid | proposed_online_date | 2026-09-01 | 2026-10-01 |
| 2026-10-02 | Solar Carver 3 Hybrid | proposed_online_date | 2026-09-01 | 2026-10-01 |
| 2026-10-02 | Oak Leaf Solar XVI Community Solar | capacity_mw | 1.2 | 1 |
| 2026-09-02 | Holyoke MA BESS 1 | proposed_online_date | 2026-08-01 | 2026-09-01 |
| 2026-09-02 | Solar Carver 1 Hybrid | proposed_online_date | 2026-07-01 | 2026-09-01 |
| 2026-09-02 | Solar Carver 1 Hybrid | proposed_online_date | 2026-07-01 | 2026-09-01 |
| 2026-09-02 | Lincoln Public Schools | new_project | — | operational |
| 2026-09-02 | Lincoln Public Schools | new_project | — | operational |
Explore related data
Source last checked2026-07-31
Data last materially changed2026-10-11
Page data generated2026-10-11
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.
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