Where Indiana Gets Its Electricity
Net generation by source · 12-month average, July 2025 – June 2026.
Generation mix
| Source | Share | Generation |
|---|---|---|
| Natural gas | 36.4% | 40,553 GWh |
| Coal | 42.8% | 47,793 GWh |
| Nuclear | 0.0% | 0 GWh |
| Wind | 9.8% | 10,897 GWh |
| Solar | 7.6% | 8,511 GWh |
| Hydro | 0.3% | 302 GWh |
| Other | 3.1% | 3,481 GWh |
111.5 TWh generated over the 12 months to June 2026. Shares are of net generation within Indiana, 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. Indiana generated 440 GWh that way. Counting it on both sides of the ratio takes solar from 7.6% to 8.0%.
How the mix has shifted since 2001
| Source | 2001 | 2025 | Change |
|---|---|---|---|
| Natural gas | 1.9% | 36.2% | +34.3 pts |
| Coal | 94.7% | 44.9% | −49.8 pts |
| Nuclear | 0.0% | 0.0% | — |
| Wind | 0.0% | 9.4% | +9.4 pts |
| Solar | 0.0% | 6.1% | +6.1 pts |
| Hydro | 0.5% | 0.3% | −0.1 pts |
| Other | 2.9% | 3.0% | +0.1 pts |
Compared with the U.S. and nearby states
Indiana's generation mix in context
Coal supplied 43.4% of Indiana's electricity generation since June 2025, making it the largest source. Renewable generation accounted for 17.3% of the state's total, ranking 28th among the 51 states and DC. Solar alone provided 7.3% when measured as utility-scale generation, or 7.7% when rooftop solar is included.
Indiana's renewable share trails the national average of 24.9% by 7.6 percentage points. Among its four neighbouring states, Illinois had a higher renewable share at 17.4%, while Michigan at 13.5%, Kentucky at 8.6%, and Ohio at 8.1% all fell below Indiana's level. The state's generation remained heavily weighted toward fossil fuels at 82.2% of the total, with natural gas providing 36.2%.
Since 2001, Indiana's generation mix transformed dramatically. Coal collapsed from 94.7% in 2001 to 44.9% in 2025, while natural gas surged from 1.9% to 36.2% over the same span. Wind and solar emerged as new sources, contributing 9.4% and 6.1% respectively in 2025 after registering zero in 2001. The renewable share grew from 0.6% to 16% between those years.
Written from the EIA figures on this page, covering data through May 2026.
Frequently asked questions
›What percentage of Indiana's electricity comes from renewable energy?
›What percentage of Indiana's power comes from solar?
›Where does Indiana get most of its electricity?
›Does Indiana still burn coal for electricity?
›Is Indiana 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 June 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.