Where New Hampshire Gets Its Electricity
Net generation by source · 12-month average, September 2025 – August 2026.
Generation mix
| Source | Share | Generation |
|---|---|---|
| Natural gas | 32.4% | 6,074 GWh |
| Coal | 0.0% | 0 GWh |
| Nuclear | 52.7% | 9,882 GWh |
| Wind | 2.5% | 475 GWh |
| Solar | 0.0% | 0 GWh |
| Hydro | 5.7% | 1,066 GWh |
| Other | 6.6% | 1,241 GWh |
18.7 TWh generated over the 12 months to August 2026. Shares are of net generation within New Hampshire, which is not the same as what the state consumes — power crosses state lines.
Counting rooftop solar
EIA reports small-scale solar — mostly rooftop panels on homes and businesses — separately, and leaves it out of the state generation total that the mix above is a share of. New Hampshire generated 452 GWh that way. Counting it on both sides of the ratio takes solar from 0.0% to 2.4%.
How the mix has shifted since 2001
| Source | 2001 | 2025 | Change |
|---|---|---|---|
| Natural gas | 0.8% | 27.5% | +26.7 pts |
| Coal | 24.6% | 1.2% | −23.3 pts |
| Nuclear | 57.7% | 56.4% | −1.2 pts |
| Wind | 0.0% | 2.5% | +2.5 pts |
| Solar | 0.0% | 0.0% | — |
| Hydro | 6.6% | 7.0% | +0.4 pts |
| Other | 10.4% | 5.4% | −5.0 pts |
Compared with the U.S. and nearby states
| Where | Renewable | Carbon-free | Largest source |
|---|---|---|---|
| New Hampshire | 12.9% | 65.6% | Nuclear 52.7% |
| U.S. average | 25.4% | 43.0% | Natural gas 40.9% |
| Vermont | 99.4% | 99.4% | Hydro |
| Maine | 58.6% | 58.6% | Natural gas |
| Massachusetts | 23.9% | 23.9% | Natural gas |
New Hampshire's generation mix in context
Nuclear dominates New Hampshire's generation mix, supplying 52.7% of the 18.7 TWh generated from September 2025 to August 2026. Gas provides 32.4%, while renewable sources account for 12.9% of the total. This renewable share ranks 36th of the 50 states and DC with generation data. Hydropower is the largest renewable contributor at 5.7%, followed by wind at 2.5%. Solar is negligible—utility-scale solar provides 0%, though including rooftop solar raises the figure to 2.4%, which ranks 49th of the 50 states and DC with generation data. Carbon-free sources together make up 65.6% of the state's generation.
New Hampshire's mix has shifted substantially since 2001. Coal, which supplied 24.6% in 2001, has nearly vanished, falling to 1.2% in 2025. Gas has surged from 0.8% in 2001 to 27.5% in 2025, while nuclear has declined slightly from 57.7% to 56.4%. Wind has emerged as a new source, reaching 2.5% in 2025 after zero output in 2001. Renewable generation overall has grown marginally from 13.4% in 2001 to 13.6% in 2025.
Compared with the nation, New Hampshire generates less from renewable sources—the country's renewable share stands at 25.4%, leaving the state 12.5 percentage points below the national average. The state also generates no coal, against a national share of 15.4%. Gas provides 8.5 percentage points less than the national mix, while nuclear is far more dominant locally than nationally. All three bordering states—Vermont, Maine, and Massachusetts—have higher renewable shares, with Vermont's 99.4% leading the region.
Written from the EIA figures on this page, covering data through August 2026.
Frequently asked questions
›What percentage of New Hampshire's electricity comes from renewable energy?
›What percentage of New Hampshire's power comes from solar?
›Where does New Hampshire get most of its electricity?
›Does New Hampshire still burn coal for electricity?
›Is New Hampshire getting greener?
How this is measured
Figures are net generation reported to the U.S. Energy Information Administration for all sectors — utilities, independent power producers, and industrial and commercial plants that generate their own power. Shares are of the 12 months to August 2026, rather than a single month, because generation is strongly seasonal: solar peaks in summer and hydro with the spring melt, so one month says more about the weather than about the grid.
“Other” is the reported total minus the six named sources, so the shares add to exactly 100%. It holds geothermal, biomass, petroleum, other gases, and pumped storage — the last of which consumes more electricity than it returns, and so can be negative. Geothermal and biomass are renewable, which is why the renewable share above is slightly larger than wind, solar and hydro added together.
This is generation, not consumption. Electricity crosses state lines freely, so a state can generate more than it uses or rely on imports for a large part of its supply; neither shows up here.