Natural Gas Overtook Coal for Ohio Electricity Generation

Ohio businesses face tightening regional energy supply as coal plants retire and electricity demand projections climb.

Updated on Oct. 5, 2026 in Utilities

Isometric editorial illustration of industrial gas pipeline components rendered in matte, flat-colored geometric shapes against a neutral background. — Ohio has transitioned to natural gas as its primary electricity source, creating new challenges for commercial power procurement as coal plants retire. AI Illustration. Upload story photo >

Live Poll

Do you trust that your local power grid can meet rising electricity demand over the decade?

Ohio shifted from coal to natural gas as its primary electricity source between 2014 and 2024, altering the state's power generation mix. This transition occurred as several major coal-fired power plants retired due to shifting market conditions and environmental regulations.

Why it matters

The transition to natural gas, paired with recent capacity auction shortfalls, signals tightening regional power supply for commercial and industrial operators. Higher volatility in peak demand capacity may lead to increased reliance on market-based energy procurement strategies.

Ohio's total net summer capacity decreased by 3% over the decade while production rose, with 16,365 megawatts of natural gas capacity currently operating against 6,621 megawatts of coal. Regional supply constraints were confirmed by a 6,831-megawatt shortfall in the 2028-29 capacity auction.

The players

PJM Interconnection

A regional transmission organization that coordinates the movement of wholesale electricity across 13 states and the District of Columbia.

The details

Coal retirements, including the J.M. Stuart, Killen, and W.H. Zimmer stations, removed significant baseload capacity from the grid. This shift was accelerated by 14,300 megawatts of natural gas development in Ohio and Pennsylvania. As demand forecasts reach 222,106 megawatts for summer 2036, regional grid operator PJM Interconnection is now pursuing backstop procurement to mitigate supply gaps.

Coal served as Ohio's primary electricity source in 2014.
The J.M. Stuart and Killen plants retired in 2018.
The William H. Zimmer plant retired in 2022.
Natural gas became Ohio's leading electricity generation source in 2024.
The PJM capacity auction shortfall for 2028-29 was finalized in July 2026.

Market Landscape

Ohio's energy profile has shifted in lockstep with a broader transition toward natural gas across the mid-Atlantic power grid. This trend complicates the PJM Interconnection capacity auction framework, which is currently struggling to reconcile retirements with accelerating peak demand.

Operators should monitor future electricity rate adjustments as regional grid capacity constraints tighten. Businesses with heavy energy footprints should review their long-term supply contracts and consider the impact of projected 2036 peak demand on their operational expenses.

The takeaway

The move to natural gas generation has fundamentally altered the state's energy baseline while leaving the grid more sensitive to peak demand surges. Business owners should request updated long-range power stability projections from their utility providers to account for the tightening regional supply.