Plymouth County, Massachusetts: Power, Data Centers and the Local Economy
Home to Brockton and Plymouth, and the communities of Plymouth
Plymouth County sits inside the data center build-out. The SAVRN Data Center Map lists 3 data centers in Plymouth County, 6% of Massachusetts's total. Plymouth County is home to Brockton, Plymouth, Bridgewater Town and Marshfield, plus the unincorporated community of Plymouth. 52 MW of new generation is planned here across 16 units, led by ReWild Renewables, LLC (solar), the 4th largest pipeline among Massachusetts's counties. 6 MW of it is already under construction or built. 674 MW has retired here since 2019, including Pilgrim Nuclear Power Station (nuclear, 670 MW, 2019). Construction employs 15,309, up 8.6% since 2019, and construction is 1.5 times as concentrated here as in the U.S. economy.
Cities and towns in Plymouth County
Plymouth County is home to Brockton, Plymouth, Bridgewater Town and Marshfield, plus the unincorporated community of Plymouth.
And 3 smaller places.
Unincorporated communities (governed by the county): Plymouth, Abington, Cedar Crest, Duxbury, Green Harbor, Hanson, Hingham, Hull, Kingston, Marion Center, Marshfield, Marshfield Hills, Mattapoisett Center, Middleborough Center, North Lakeville, North Pembroke, North Plymouth, North Scituate, Ocean Bluff-Brant Rock, Onset, Scituate, South Duxbury, The Pinehills, Wareham Center, West Wareham, Weweantic, White Island Shores.
Residents are 2025 Census estimates for the part of each city, town or township inside this county. Census publishes no annual estimate for unincorporated communities.
What changed in Plymouth County
1st = the most. Ranks cover counties with a value on record.
| Measure | Then | Now | Change | Rank in Massachusetts |
|---|---|---|---|---|
| Population (2020 → 2025) | 528,413 | 546,829 | ▲ 3.5% | 7th of 14 by size |
| Total jobs (2019 → 2025) | 197,144 | 197,448 | ▲ 0.2% | 5th of 14 by growth |
| Average annual pay (2019 → 2025) | $54,836 | $72,763 | ▲ 32.7% | — |
| Construction jobs (2019 → 2025) | 14,100 | 15,309 | ▲ 8.6% | 3rd of 8 by growth |
| Electrical contractor jobs (2019 → 2025) | 2,502 | 3,101 | ▲ 23.9% | — |
| Power line construction jobs (2019 → 2025) | 148 | 188 | ▲ 27.0% | — |
| Electric utility jobs (2019 → 2025) | 733 | 636 | ▼ 13.2% | — |
| Data processing and hosting jobs (2019 → 2025) | 595 | 261 | ▼ 56.1% | — |
| Unemployment rate (2019 → August 2026) | 3.2% | 4.5% | ▲ 1.3pts | — |
| Generating capacity added since 2019 | — | 255 MW | — | |
| Generating capacity retired since 2019 | — | 674 MW | — | |
| Planned generation (Aug 2026) | — | 52 MW | 11% of today's fleet | 4th of 8 by size |
Electrical contractors employ 3,101, up 23.9% since 2019 against up 3.4% statewide, at an average $104,676 a year. Unemployment was 4.5% in August 2026, against 3.2% in 2019. 255 MW of that came online in 2019 or later, mostly battery storage. Its power plants have 473 MW of capacity, 40% of it battery storage. NSTAR Electric Company is the largest utility serving Plymouth County, one of 5 with territory here. Its residential customers paid an average 29.91¢/kWh in 2024, above the 16.18¢ median for Massachusetts utilities. Employers here counted 197,448 jobs in 2025, up 0.2% from 2019 (the 5th fastest growth of 14 Massachusetts counties). 546,829 people live here, up 3.5% since 2020, 7th of 14 Massachusetts counties by population.
Who powers Plymouth County
Net change in operating capacity since 2019: −419 MW. Colors follow the fuel legend above.
Utilities with service territory in Plymouth County
| Utility | Ownership | Service | Residential customers (systemwide) | Residential price, 2024 | Commercial share of sales |
|---|---|---|---|---|---|
| NSTAR Electric Company | Investor Owned | Bundled | 1,303,076 | 29.91¢ | 27% |
| Massachusetts Electric Co | Investor Owned | Bundled | 1,210,113 | 33.60¢ | 24% |
| Town of Middleborough - (MA) | Municipal | Bundled | 14,884 | 15.84¢ | 41% |
| City of Hingham - (MA) | — | — | — | — | — |
| Hull Municipal Light Plant | — | — | — | — | — |
Customer counts, prices and sales shares cover each utility's whole system in the state, not only this county. Commercial sales include data centers.
Operating power plants 69
| Technology | Capacity | Share |
|---|---|---|
| Battery storage | 188 MW | 40% |
| Solar | 176 MW | 37% |
| Other technologies | 98 MW | 21% |
| Wind | 11 MW | 2% |
| Largest plants | Owner | Technology | MW | Since |
|---|---|---|---|---|
| Cranberry Point Energy Storage | Cranberry Point Energy Storage LLC | Battery storage | 150 MW | 2025 |
| SEMASS Resource Recovery | SEMASS Partnership | Other technologies | 98 MW | 1988 |
| 59 Federal Rd(CSG) | 59FED WHAM8 Solar, LLC | Battery storage | 10 MW | 2021 |
| 0 Hammond St CSG | 0HAM WHAM8 Solar, LLC | Solar | 10 MW | 2021 |
| Old Middleboro Road Solar | Agilitas Energy, Inc. | Solar | 10 MW | 2023 |
| 160 Tihonet Rd Hybrid(CSG) | 160TIH WHAM8 Solar, LLC | Battery storage | 8 MW | 2021 |
Planned generation 16
| Plant | Technology | MW | Status | Year | Owner |
|---|---|---|---|---|---|
| Braley Hill North Solar | Batteries | 5 MW | Approvals pending | 2027 | Agilitas Energy, Inc. |
| Braley Hill North Solar | Solar Photovoltaic | 5 MW | Approvals pending | 2027 | Agilitas Energy, Inc. |
| Randall Lane Solar | Batteries | 5 MW | Approvals pending | 2027 | ReWild Renewables, LLC |
| Randall Lane Solar | Solar Photovoltaic | 5 MW | Approvals pending | 2027 | ReWild Renewables, LLC |
| Logging Swamp North | Solar Photovoltaic | 5 MW | Approvals received | 2027 | ReWild Renewables, LLC |
| Logging Swamp South | Solar Photovoltaic | 5 MW | Approvals received | 2027 | ReWild Renewables, LLC |
| Snipatuit Road Solar | Batteries | 4 MW | Approvals pending | 2027 | Agilitas Energy, Inc. |
| Snipatuit Road Solar | Solar Photovoltaic | 4 MW | Approvals pending | 2027 | Agilitas Energy, Inc. |
| Cushman Road Solar | Batteries | 3 MW | Approvals pending | 2027 | ReWild Renewables, LLC |
| Cushman Road Solar | Solar Photovoltaic | 3 MW | Approvals pending | 2027 | ReWild Renewables, LLC |
| Solar Carver 1 Hybrid | Batteries | 2 MW | Under construction (>50%) | 2026 | Solar Carver 1, LLC |
| Solar Carver 1 Hybrid | Solar Photovoltaic | 2 MW | Under construction (>50%) | 2026 | Solar Carver 1, LLC |
| Solar Carver 3 Hybrid | Batteries | 1 MW | Under construction (>50%) | 2026 | Solar Carver 3, LLC |
| Solar Carver 3 Hybrid | Solar Photovoltaic | 1 MW | Under construction (>50%) | 2026 | Solar Carver 3, LLC |
| Featherbed Lane South Solar | Batteries | 1 MW | Approvals pending | 2027 | ReWild Renewables, LLC |
| Featherbed Lane South Solar | Solar Photovoltaic | 1 MW | Approvals pending | 2027 | ReWild Renewables, LLC |
Retired since 2019
| Plant | Technology | MW | Year |
|---|---|---|---|
| Pilgrim Nuclear Power Station | Nuclear | 670 MW | 2019 |
| Kingston Wind Independence | Wind | 2 MW | 2022 |
| Hull Wind II | Wind | 2 MW | 2025 |
The Plymouth County labor market
| Industry (2025) | Jobs | Average pay | Concentration vs U.S. |
|---|---|---|---|
| All industries | 197,448 | $72,763 | 1.00 |
| Construction | 15,309 | $101,791 | 1.46 |
| Electrical contractors | 3,101 | $104,676 | 2.18 |
| Power and communication line construction | 188 | $108,637 | 0.59 |
| Electric utilities | 636 | $140,795 | 1.19 |
| Data processing and hosting | 261 | $164,941 | 0.43 |
Concentration is the BLS location quotient: 1.0 means the industry holds the same share of local jobs as it does nationally. Industry rows count private employers; cells BLS suppresses are left out.
Data centers and local rules in Plymouth County
3 data centers in Plymouth County are on the SAVRN Data Center Map.
Plymouth County and its neighbors
Of the 3 counties that border Plymouth County, Norfolk County carries the most build-out activity: data centers, planned generation and operating plants combined.
| County | Population | Jobs since 2019 | Operating MW | Planned MW | Data centers | Local measures |
|---|---|---|---|---|---|---|
| Plymouth County | 546,829 | ▲ 0.2% | 473 MW | 52 MW | 3 | — |
| Barnstable County | 233,539 | ▼ 1.2% | 1,597 MW | — | — | — |
| Bristol County | 593,640 | ▼ 1.5% | 596 MW | 189 MW | — | — |
| Norfolk County | 739,749 | ▼ 1.6% | 2,741 MW | 11 MW | 2 | — |
More of Massachusetts
Plymouth County, answered from the record
Who provides electricity in Plymouth County, Massachusetts?
5 utilities have service territory in Plymouth County in the EIA-861 2024 report: NSTAR Electric Company, Massachusetts Electric Co, Town of Middleborough - (MA), City of Hingham - (MA). The largest, NSTAR Electric Company, charged residential customers 29.91¢/kWh on average in 2024.
What county is Brockton, MA in?
Brockton is in Plymouth County, Massachusetts. About 106,134 people live there (2025 Census estimate).
What county is Plymouth, MA in?
Plymouth is in Plymouth County, Massachusetts. About 67,846 people live there (2025 Census estimate).
What county is Bridgewater Town, MA in?
Bridgewater Town is in Plymouth County, Massachusetts. About 29,309 people live there (2025 Census estimate).
What power plants are in Plymouth County?
69 operating plants with 473 MW of capacity. The largest is Cranberry Point Energy Storage (150 MW, battery storage).
How much new power is planned in Plymouth County?
52 MW across 16 units in the August 2026 EIA-860M inventory, 6 MW of it under construction or built. The largest owner is ReWild Renewables, LLC.
Are there data centers in Plymouth County?
Yes. The SAVRN Data Center Map lists 3 data centers in Plymouth County.
Is Plymouth County adding jobs?
Employers counted 197,448 jobs in 2025 against 197,144 in 2019 (+0.2%, BLS QCEW). Construction went from 14,100 to 15,309.
Does Plymouth County have a data center moratorium?
No county-level measure is on record for Plymouth County. Massachusetts has 17 local measures statewide, listed on the state page.