Where Maryland Gets Its Electricity
Net generation by source · 12-month average, July 2025 – June 2026.
Generation mix
| Source | Share | Generation |
|---|---|---|
| Natural gas | 41.3% | 16,144 GWh |
| Coal | 7.5% | 2,921 GWh |
| Nuclear | 38.1% | 14,926 GWh |
| Wind | 1.9% | 744 GWh |
| Solar | 4.4% | 1,729 GWh |
| Hydro | 3.6% | 1,396 GWh |
| Other | 3.2% | 1,267 GWh |
39.1 TWh generated over the 12 months to June 2026. Shares are of net generation within Maryland, 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. Maryland generated 1,864 GWh that way. Counting it on both sides of the ratio takes solar from 4.4% to 8.8%.
How the mix has shifted since 2001
| Source | 2001 | 2025 | Change |
|---|---|---|---|
| Natural gas | 3.6% | 42.5% | +38.9 pts |
| Coal | 57.8% | 6.1% | −51.8 pts |
| Nuclear | 27.8% | 39.3% | +11.4 pts |
| Wind | 0.0% | 1.8% | +1.8 pts |
| Solar | 0.0% | 3.5% | +3.5 pts |
| Hydro | 2.4% | 4.2% | +1.8 pts |
| Other | 8.3% | 2.6% | −5.7 pts |
Compared with the U.S. and nearby states
| Where | Renewable | Carbon-free | Largest source |
|---|---|---|---|
| Maryland | 10.6% | 48.8% | Natural gas 41.3% |
| U.S. average | 25.2% | 42.9% | Natural gas 40.7% |
| District of Columbia | 53.5% | 53.5% | Other |
| Virginia | 13.8% | 40.3% | Natural gas |
| West Virginia | 6.0% | 6.0% | Coal |
| Delaware | 4.3% | 4.3% | Natural gas |
| Pennsylvania | 3.9% | 34.8% | Natural gas |
Maryland's generation mix in context
Natural gas supplied 41% of Maryland's electricity generation since June 2025, making it the largest source. Nuclear power ranked second at 38.1%, together with gas accounting for most of the state's generation. Carbon-free sources—nuclear and renewables—made up 49% of the total, while fossil fuels contributed 50.3%.
Renewable generation reached 10.8%, placing Maryland 40th among the 51 states and DC ranked by renewable share. Solar accounted for 4.1% of generation from utility-scale facilities, or 8.4% when rooftop solar is included. Wind contributed 1.9% and hydroelectric power 4.1%, with geothermal and biomass making up part of the remaining 3.3% held in other sources. The renewable share fell 14.1 percentage points short of the national average of 24.9%.
Since 2001, Maryland's generation mix has undergone a dramatic transformation. Coal collapsed from 57.8% in 2001 to 6.1% in 2025, while natural gas surged from 3.6% to 42.5% over the same period. Nuclear power grew from 27.8% to 39.3%. Renewable generation rose from 3.2% in 2001 to 10.3% in 2025, driven by solar climbing from zero to 3.5% and wind emerging at 1.8%. Among neighbouring states, District of Columbia and Virginia both surpass Maryland's renewable share, while West Virginia, Delaware, and Pennsylvania all generate lower proportions from renewable sources.
Written from the EIA figures on this page, covering data through May 2026.
Frequently asked questions
›What percentage of Maryland's electricity comes from renewable energy?
›What percentage of Maryland's power comes from solar?
›Where does Maryland get most of its electricity?
›Does Maryland still burn coal for electricity?
›Is Maryland 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.