From July 2025 through June 2026, about two-thirds of New Hampshire’s electricity consumption came from low-carbon sources, while almost a third came from fossil fuels. Nuclear supplied more than half of the total, at about 52%, making it the largest source of clean electricity. Hydropower contributed around 7%, biofuels 4%, and wind and solar about 2% each. The solar contribution was behind-the-meter generation, not an additional separate share. On the fossil side, gas supplied about 31% of electricity and oil roughly 1%. Expanding clean electricity would help reduce reliance on fossil fuels and their associated climate impacts and air pollution.

Is Electricity Growing in New Hampshire?

Electricity consumption per person is not growing in the latest figures. In 2026, it stood at about 13,500 kWh per person, down roughly 440 kWh, or 3%, from the 2025 record of about 13,900 kWh. Low-carbon electricity generation also fell, reaching about 9,100 kWh per person compared with the previous record of about 9,800 kWh in 2025—a decline of roughly 770 kWh, or 8%. This retreat in clean electricity generation is concerning: New Hampshire needs growth in low-carbon electricity to support electrification and rising demand from technologies such as AI.

Suggestions

New Hampshire can build on its strong nuclear foundation by expanding generation at its existing nuclear facilities, including through capacity upgrades, and considering additional nuclear capacity. France and Slovakia, where nuclear supplies about two-thirds of electricity, illustrate the substantial role this clean technology can play. For solar and wind, neighboring Maine is an especially relevant example: the US state generates about 18% of its electricity from solar and another 18% from wind, compared with only about 2% each in New Hampshire. Expanding rooftop and larger-scale solar, alongside suitable wind projects and grid improvements, would diversify and increase New Hampshire’s low-carbon electricity supply.

History

Across 2024–2026, nuclear drove the largest changes in New Hampshire’s low-carbon electricity generation. It increased by 0.1 TWh in 2024 and a substantial 1.2 TWh in 2025, before falling by 1 TWh in 2026. That sharp reversal erased most of the previous year’s gain and represents a serious setback for clean electricity growth; restoring and expanding nuclear output should be a priority. Hydropower declined throughout the period, falling by 0.2 TWh in 2024 and 0.1 TWh in each of the following two years. Biofuels fell slightly in 2024, recovered in 2025, and remained unchanged in 2026, while wind generation showed no growth across all three years. Together, these figures underline the need to turn recent declines and stagnation into sustained low-carbon electricity growth.

Electricity Imports and Exports

Balance of Trade

* 12M = Last 12 months (Jul 2025 – Jun 2026) — a rolling 12-month period, not a calendar year.