U.S. Electric Generating Capacity Additions 2026 Report: EIA Inventory Data

Key Takeaways

• Power plant developers and operators plan to add 86 GW of new utility-scale electric generating capacity to the U.S. grid in 2026.
• Solar energy dominates planned capacity additions at 51% (43.4 GW), followed by battery storage at 28% (24 GW) and wind at 14% (11.8 GW).
• Zero-carbon technologies account for 93% of all new scheduled capacity, compared to just 6.3 GW for natural gas.
• More than half of new utility solar capacity is concentrated in four states: Texas (40%), Arizona (6%), California (6%), and Michigan (5%).
• Texas leads battery storage with 53% (12.9 GW) of planned national additions, hosting projects such as Lunis Creek (621 MW) and Clear Fork Creek (600 MW).

Record-Breaking Expansion of the U.S. Electric Power Grid

The United States power grid is expanding at its fastest pace in over two decades. According to the U.S. Energy Information Administration's Preliminary Monthly Electric Generator Inventory report, U.S. power plant developers and operators plan to add 86 gigawatts (GW) of new utility-scale electric generating capacity to the U.S. power grid in 2026, setting an all-time record if realized.

This massive volume follows a landmark year in 2025, when 53 GW of new capacity was added to the grid—the largest capacity installation in a single year since 2002. However, the 2026 buildout represents a decisive technological pivot. Rather than gas-fired expansion, clean energy and storage dominate: solar power makes up 51% of the planned 2026 capacity additions, followed by battery storage at 28% and wind at 14%.

As electricity demand surges from data centers, industrial onshoring, and vehicle electrification, clean energy developers are capturing the bulk of new interconnection capacity. For consumers and businesses assessing whether solar panels are worth it, these macro utility figures show that renewable energy has become the default foundation of American power generation.

Utility-Scale Solar: Surging 60% to 43.4 GW

Solar photovoltaic technology is the single largest component of new American generating capacity. Developers plan to add 43.4 GW of new utility-scale solar capacity in 2026, a 60% increase in capacity additions from last year if realized.

This surge builds upon consecutive record installations: utility-scale solar capacity added to the U.S. grid totaled 30.8 GW in 2024 and 27.2 GW in 2025. The geographic footprint of solar development is heavily concentrated: more than half of the new utility-scale solar capacity is planned for four states: Texas (40%), Arizona (6%), California (6%), and Michigan (5%).

Leading the 2026 solar wave is the Tehuacana Creek 1 Solar and BESS project in Texas. Adding 837 megawatts (MW) of solar capacity alongside 418 MW of battery storage, it represents the largest solar photovoltaic installation scheduled for commercial operation nationwide this year. Supported by federal clean energy tax credits, large-scale solar delivers lowest-cost bulk electricity during daylight hours.

Battery Storage Expansion: 24 GW Planned Across Key States

Grid-scale storage is scaling in parallel with solar to ensure round-the-clock reliability. Developers plan to add 24 GW of utility-scale battery storage to the grid this year, compared with a record 15 GW added in 2025.

This buildout caps a rapid expansion cycle: U.S. battery storage capacity has grown exponentially over the last five years with more than 40 GW added to the grid during this period. Like solar, storage deployment is concentrated in wholesale electricity markets experiencing high intermittent renewable penetration. Projects in three states make up the bulk of planned battery storage capacity in 2026, accounting for about 80% of the new U.S. battery storage capacity: 53%, or 12.9 GW, in Texas; 14%, or 3.4 GW, in California; and 13%, or 3.2 GW, in Arizona.

Major battery storage facilities scheduled for commercial operation in 2026 include:

• Lunis Creek BESS (Jackson, Texas): 621 MW standalone storage installation.
• Clear Fork Creek Solar and BESS SLF (Wilson, Texas): 600 MW co-located facility.
• Bellefield 2 Solar & Energy Storage Farm (Kern County, California): 500 MW hybrid storage phase.
• Tehuacana Creek 1 Solar and BESS (Navarro County, Texas): 418 MW battery storage component.

These assets actively engage in battery storage arbitrage, absorbing low-cost daytime solar and discharging during peak evening demand.

Wind and Natural Gas: Supporting Grid Balancing

Wind power additions are set to rebound after multi-year supply chain and transmission delays. Annual U.S. wind capacity additions could rise in 2026 with 11.8 GW planned to be added to the grid, more than double the capacity added last year. A major contributor is the 3,650-MW SunZia Wind project in New Mexico, which is expected to start commercial operations this year as the largest onshore wind project in the United States.

Conversely, fossil fuel additions continue to diminish as a share of new capacity. In 2026, developers plan to add 6.3 GW of new natural gas-fired capacity. Combined-cycle generation is expected to account for 3.3 GW of the planned additions, while combustion turbine units account for 2.8 GW.

With solar, storage, and wind comprising 93% of new utility-scale generating assets, 2026 demonstrates that zero-carbon technologies have fundamentally displaced fossil generation in forward power planning.