# Nantucket County, Massachusetts: Power, Data Centers and the Local Economy

Home to Nantucket

No data center or power plant project is on record in Nantucket County, but the national build-out still reaches it through its utility bill, its labor market and the projects next door. Nantucket County and the city of Nantucket share the same boundaries. Unemployment was 2.7% in August 2026, against 4.3% in 2019. Employers here counted 8,675 jobs in 2025, up 11.4% from 2019 (the fastest growth of 14 Massachusetts counties). 7 MW has retired here since 2019, including Nantucket Hybrid (petroleum, 7 MW, 2019). 22 MW of that came online in 2019 or later, mostly petroleum.

+11.4%
total jobs since 2019, now 8,675

7 MW
of generating capacity retired since 2019

22 MW
of operating power plants, mostly petroleum

## Cities and towns in Nantucket County

Nantucket County and the city of Nantucket share the same boundaries.

Nantucket14,758 residents

Unincorporated communities (governed by the county): Madaket, Nantucket, Siasconset.

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 Nantucket County

| Measure | Then | Now | Change | Rank in Massachusetts |
|---|---|---|---|---|
| Population (2020 → 2025) | 14,240 | 14,758 | ▲ 3.6% | 14th of 14 by size |
| Total jobs (2019 → 2025) | 7,788 | 8,675 | ▲ 11.4% | 1st of 14 by growth |
| Average annual pay (2019 → 2025) | $59,612 | $82,938 | ▲ 39.1% | — |
| Unemployment rate (2019 → August 2026) | 4.3% | 2.7% | ▼ 1.6pts | — |
| Generating capacity added since 2019 | — | 22 MW |  | — |
| Generating capacity retired since 2019 | — | 7 MW |  | — |

Its power plants have 22 MW of capacity, 73% of it petroleum. Nantucket Electric Co is the largest utility serving Nantucket County. Its residential customers paid an average 35.11¢/kWh in 2024, above the 16.18¢ median for Massachusetts utilities. 14,758 people live here, up 3.6% since 2020.

## Who powers Nantucket County

### Utilities with service territory in Nantucket County

| Utility | Ownership | Service | Residential customers (systemwide) | Residential price, 2024 | Commercial share of sales |
|---|---|---|---|---|---|
| Nantucket Electric Co | Investor Owned | Bundled | 12,823 | 35.11¢ | 11% |

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 

| Technology | Capacity | Share |
|---|---|---|
| Petroleum | 16 MW | 73% |
| Battery storage | 6 MW | 27% |

| Largest plants | Owner | Technology | MW | Since |
|---|---|---|---|---|
| Nantucket Hybrid | Nantucket Electric Co | Petroleum | 22 MW | 2019 |

### Retired since 2019

| Plant | Technology | MW | Year |
|---|---|---|---|
| Nantucket Hybrid | Petroleum | 7 MW | 2019 |

## The Nantucket County labor market

| Industry (2025) | Jobs | Average pay | Concentration vs U.S. |
|---|---|---|---|
| All industries | 8,675 | $82,938 | 1.00 |

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 Nantucket County

No data center, local measure or delayed project is on record in Nantucket County. Massachusetts has 17 local measures on record statewide.

## More of Massachusetts

[All Massachusetts countiesThe state power page and county mapOpen →](https://savrn.com/power-supply-chain-map/massachusetts)

## Nantucket County, answered from the record

### Who provides electricity in Nantucket County, Massachusetts?

1 utility has service territory in Nantucket County in the EIA-861 2024 report: Nantucket Electric Co. The largest, Nantucket Electric Co, charged residential customers 35.11¢/kWh on average in 2024.

### What county is Nantucket, MA in?

Nantucket is in Nantucket County, Massachusetts. About 14,758 people live there (2025 Census estimate).

### What power plants are in Nantucket County?

1 operating plant with 22 MW of capacity. The largest is Nantucket Hybrid (22 MW, petroleum).

### Are there data centers in Nantucket County?

The SAVRN Data Center Map has no data center in Nantucket County.

### Is Nantucket County adding jobs?

Employers counted 8,675 jobs in 2025 against 7,788 in 2019 (+11.4%, BLS QCEW).

### Does Nantucket County have a data center moratorium?

No county-level measure is on record for Nantucket County. Massachusetts has 17 local measures statewide, listed on the state page.

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Canonical: https://savrn.com/power-supply-chain-map/massachusetts/nantucket-county
Updated: 2026-10-08. Refreshed weekly by SAVRN from EIA, BLS, BEA, Census and the SAVRN trackers. License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).