Adjacent Generation

✓ 5,000 MW within 20 mi — Tier 1
Criteria: Tier 1 ≥500 MW · Tier 2 100–499 MW · Fail <100 MW. Sum nameplate MW of operating generators (EIA-860) within 20-mi buffer, excluding small thermal (<10 MW). Higher is better.
Source: EIA-860 Operating Generators — Example site, TX (25 mi) · 2026-03
SITE ASSESSMENT
✓ Tier 1
5,000 MW total within 20 mi (22 generators)
TOTAL GENERATION
5,000 MW ≥500 MW
Excl. 3 small thermal units (<10 MW)
DOMINANT FUEL
Nuclear
2,709 MW · 54% of total
NEAREST GENERATOR
5.4 mi
Peyton Creek Wind Farm II · 243 MW Wind
WIND + SOLAR SHARE
25% Intermittent risk
Intermittent-dominant grid support risk

Summary

Operating Generators within 20 Miles (25 total, 3 excluded)

Plant Name MW Fuel Technology Distance (mi) Operator
Peyton Creek Wind Farm II 243.0 Wind Onshore Wind Turbine 5.4 RWE Clean Energy
HEB00292 (excl.) 0.4 Gas Natural Gas Internal Combustion Engine 7.1 Texas Microgrid, LLC
HEB00292 (excl.) 0.4 Gas Natural Gas Internal Combustion Engine 7.1 Texas Microgrid, LLC
HEB00292 (excl.) 0.4 Gas Natural Gas Internal Combustion Engine 7.1 Texas Microgrid, LLC
SMT Bay City LLC 10.0 Storage Batteries 7.8 SMT Bay City LLC
Peyton Creek Wind Farm LLC 151.2 Wind Onshore Wind Turbine 9.0 RWE Clean Energy
Sweeny Cogen Facility 143.0 Gas Natural Gas Fired Combustion Turbine 9.1 Sweeny Cogeneration LLC
Sweeny Cogen Facility 143.0 Gas Natural Gas Fired Combustion Turbine 9.1 Sweeny Cogeneration LLC
Sweeny Cogen Facility 143.0 Gas Natural Gas Fired Combustion Turbine 9.1 Sweeny Cogeneration LLC
Sweeny Cogen Facility 143.0 Gas Natural Gas Fired Combustion Turbine 9.1 Sweeny Cogeneration LLC
Sweeny 9.9 Storage Batteries 11.0 Engie North America
Byrd Ranch Storage 50.0 Storage Batteries 11.1 Byrd Ranch Storage LLC
Second Division Solar 100.0 Solar Solar Photovoltaic 14.9 Lightsource Renewable Energy Asset Management, LLC
Brazoria County Solar Project (Danciger) 200.0 Solar Solar Photovoltaic 15.0 Brazoria County Solar Project, LLC
Prospect Storage 9.9 Storage Batteries 16.8 GlidePath Power Operations LLC
TX23 Roughneck Storage 50.0 Storage Batteries 16.8 Key Capture Energy
GulfStar Power, LLC 300.0 Storage Batteries 16.9 GulfStar Power, LLC
Prairie Switch Wind LLC 163.2 Wind Onshore Wind Turbine 17.1 Prairie Switch Wind LLC
Brazoria 9.9 Storage Batteries 17.2 Engie North America
Pavlov 9.9 Storage Batteries 17.3 HEN Infrastructure, L.L.C.
South Texas Project 1354.3 Nuclear Nuclear 17.5 STP Nuclear Operating Co
South Texas Project 1354.3 Nuclear Nuclear 17.5 STP Nuclear Operating Co
Brazoria West 200.0 Solar Solar Photovoltaic 18.6 Brazoria West Solar Project, LLC
Cascade Solar (TX) 10.0 Solar Solar Photovoltaic 19.4 Cypress Creek Renewables
Lane City Wind 202.5 Wind Onshore Wind Turbine 19.9 RWE Clean Energy

Generation Capacity by Fuel Type (MW)

Generator Count by Fuel Type

Analysis

The the site has 5,000 MW of operating generation capacity within 20 miles, placing it in the Tier 1 zone (≥500 MW threshold). The generation mix includes Nuclear: 2,709 MW (2 units), Wind: 760 MW (4 units), Gas: 572 MW (4 units), Solar: 510 MW (4 units), Storage: 450 MW (8 units).

The dominant fuel is Nuclear at 2,709 MW (54% of total), anchored by the South Texas Project nuclear plant (2,709 MW combined across two units at 17.5 mi). Wind and solar generation accounts for 25% of total capacity, exceeding the 50% intermittent-dominant threshold.

Wind and solar generation accounts for 25% of total adjacent capacity, exceeding the 50% intermittent threshold. This indicates potential grid support risk for baseload operations.

No generator retirements announced within the next 10 years. Retirement date data is incomplete in EIA-860 for this area.

Next Steps

Sources