Electric utilities in New Hampshire
Every electric utility serving New Hampshire in EIA data year 2025, with ownership type, grid operator, balancing authority, customers and the counties each one serves.
Retail electric utilities in New Hampshire
Sorted by customers. See New Hampshire on the map, and the state regulator, New Hampshire Public Utilities Commission.
| Utility | EIA ID | Type | ISO or region | Balancing authority | Customers | Counties served |
|---|---|---|---|---|---|---|
| Public Service Co of NHEversource (PSNH) | 15472 | Investor-owned | ISO-NE | ISNE | 517,349 | 10 Belknap, Carroll, Cheshire, Coos, Grafton, Hillsborough, Merrimack, Rockingham, Strafford, Sullivan |
| Community Power Coalition of NHNew since 2018 | 65649 | Community choice aggregator | ISO-NE | ISNE | 204,201 | 0 — |
| New Hampshire Elec Coop Inc | 13441 | Cooperative | ISO-NE | ISNE | 81,235 | 9 Belknap, Carroll, Cheshire, Coos, Grafton, Merrimack, Rockingham, Strafford, Sullivan |
| Unitil Energy SystemsUnitil (NH) | 24590 | Investor-owned | ISO-NE | ISNE | 78,635 | 2 Merrimack, Rockingham |
| Liberty Utilities (Granite State ElectriLiberty Utilities (Granite State Electric) | 26510 | Investor-owned | ISO-NE | ISNE | 44,092 | 5 Cheshire, Grafton, Hillsborough, Rockingham, Sullivan |
| Town of Wolfeboro - (NH) | 20913 | Municipal | ISO-NE | ISNE | 5,737 | 2 Belknap, Carroll |
| Town of Littleton - (NH) | 11196 | Municipal | ISO-NE | ISNE | 3,904 | 1 Grafton |
| Town of Ashland | 906 | Municipal | ISO-NE | ISNE | 1,592 | 1 Grafton |
| Precinct of Woodsville | 20980 | Municipal | ISO-NE | ISNE | 1,005 | 1 Grafton |
| New Hampton Village Precinct | 13286 | Municipal | ISO-NE | ISNE | 103 | 1 Belknap |
Which utilities serve each county in New Hampshire
Retail power marketers and other entities in New Hampshire
Competitive suppliers, wholesale marketers, transmission-only companies and behind-the-meter providers that report to EIA for New Hampshire. They have no county service territory of their own.
| Entity | EIA ID | Type | ISO or region | Customers |
|---|---|---|---|---|
| North American Power and Gas, LLC | 58667 | Retail power marketer | ISO-NE | 37,586 |
| Electricity NH, LLC d/b/a ENH Power, LLC | 58086 | Retail power marketer | ISO-NE | 34,237 |
| Direct Energy Services | 54820 | Retail power marketer | ISO-NE | 20,546 |
| Constellation NewEnergy, Inc | 13374 | Retail power marketer | ISO-NE | 13,219 |
| FairPoint Energy LLC | 58158 | Retail power marketer | ISO-NE | 8,212 |
| Clearview Electric Inc. | 58974 | Retail power marketer | ISO-NE | 8,083 |
| Town Square Energy | 59059 | Retail power marketer | ISO-NE | 6,800 |
| First Point Power, LLC | 59793 | Retail power marketer | ISO-NE | 5,960 |
| Think Energy, LLC | 65310 | Retail power marketer | ISO-NE | 5,198 |
| Ambit Energy Holdings, LLC | 56212 | Retail power marketer | ISO-NE | 4,776 |
| XOOM Energy New Hampshire, LLC | 58633 | Retail power marketer | ISO-NE | 2,421 |
| SmartEnergy Holdings, LLC | 58956 | Retail power marketer | ISO-NE | 1,949 |
| Direct Energy Business | 18193 | Retail power marketer | ISO-NE | 1,694 |
| SolarCity Corporation | 57313 | Behind-the-meter provider | ISO-NE | 1,240 |
| NextEra Energy Services, LLC | 7279 | Retail power marketer | ISO-NE | 1,018 |
| Summer Energy Northeast, LLC | 61200 | Retail power marketer | ISO-NE | 586 |
| Sunrun Inc. | 59647 | Behind-the-meter provider | ISO-NE | 555 |
| ENGIE Resources LLC | 19107 | Retail power marketer | ISO-NE | 376 |
| Champion Energy Services | 54862 | Retail power marketer | ISO-NE | 64 |
| BP Energy Retail LLC | 64314 | Retail power marketer | ISO-NE | 57 |
| Texas Retail Energy, LLC | 50046 | Retail power marketer | ISO-NE | 44 |
| Calpine Energy Solutions, LLC | 16840 | Retail power marketer | ISO-NE | 11 |
| Freedom Energy | 54873 | Retail power marketer | ISO-NE | 7 |
| National Gas & Electric, LLC | 63232 | Retail power marketer | ISO-NE | 4 |
| Brookfield Renewable Trading and Marketing LP | 66398 | Retail power marketer | ISO-NE | 1 |
| Devonshire Energy, LLC | 56521 | Retail power marketer | ISO-NE | 1 |
| Greenskies Renewable Energy, LLC | 61823 | Behind-the-meter provider | ISO-NE | 1 |
| TerraForm US Energy Services, LLC | 60981 | Behind-the-meter provider | ISO-NE | 1 |
| New England Elec Transm'n Corp | 44388 | Transmission-only | Other (no ISO) | — |
About this data
Which utilities exist comes from the U.S. Energy Information Administration’s Form EIA-861 and EIA-861S, data year 2025 (final release, October 7, 2026), read directly from eia.gov. County service territories, balancing authority codes and customer counts come from EIA-861 for 2018, the latest year compiled at county level for this directory; utilities that started reporting after 2018 carry their 2025 values. County boundaries are U.S. Census cartographic boundaries (us-atlas 3.0, Albers USA projection).
Customer counts are per utility within New Hampshire. A county’s grid operator is the one serving most of its customers, estimated by spreading each utility’s customers evenly over its counties. Download every state in one file from the U.S. Electric Utility Directory.
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