Castle Gap Solar Hybrid
5291 US HWY 385 South, McCarney, TX 79752Plant Summary Information
Castle Gap Solar Hybrid is ranked #71 out of 219 solar farms in Texas in terms of total annual net electricity generation.
Castle Gap Solar Hybrid generated 68.0 GWh during the 3-month period between November 2025 to February 2026.
| Plant Name | Castle Gap Solar Hybrid |
|---|---|
| Utility Name | Upton County Solar 2 LLC |
| Location | Upton County, TX |
| Initial Operation Date | May 2018 |
| Last Update | Feb 2026 |
| Annual Generation | 372.4 GWh |
| Annual Consumption | 1.4 M MMBtu |
| Ranked #1,692 out of 12,637 Power Plants Nationwide | |
| Ranked #195 out of 6,487 Solar Power Plants Nationwide | |
| Ranked #336 out of 820 Texas Power Plants | |
| Ranked #71 out of 219 Texas Solar Power Plants | |
| Fuel Types | Solar |
| Previous Operators |
Upco Power 1, LLC (2015 to 2015) Consolidated Edison Development Inc. (2016 to 2016) Upton County Solar 2 LLC (2017 to 2024) |
Map of Castle Gap Solar Hybrid
Full Screen MapRegister Now for Comprehensive Access
Subscribe now to access all power plant data, utility information, FERC EQR data, and more for Castle Gap Solar Hybrid.
Monthly Net Generation for Castle Gap Solar Hybrid
Monthly Plant Fuel Consumption for Castle Gap Solar Hybrid
Castle Gap Solar Hybrid Details
| Summary Information | |
|---|---|
| Plant Name | Castle Gap Solar Hybrid (60123) |
| Plant Address | 5291 US HWY 385 South, McCarney, TX 79752 |
| Utility | Upton County Solar 2 LLC (61123) |
| Latitude, Longitude | 31.255, -102.272 |
| Generation Dates on File | May 2018 to Feb 2026 |
| Initial Operation Date | May 2018 |
| Annual Generation | 372.4 GWh |
| Fuel Types | Solar |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | No |
| FERC Small Power Producer Status | No |
| FERC Exempt Wholesale Generator Status | No |
| Regulatory Information | |
|---|---|
| Regulatory Status | Non-Regulated |
| NERC Region | TRE |
| Balancing Authority | Electric Reliability Council of Texas, Inc. (ERCO) |
| NAICS Code | Utilities (22) |
| Sector | IPP Non-CHP (2) |
| Water Source | |
| Ash Impoundment | No |
| Transmission / Distribution Owner | Lower Colorado River Authority (11269) |
| Grid Voltage | 138.00 kV |
| Energy Storage | Yes |
Generator CGAP Details Operating May 2018
| Technology | Solar Photovoltaic |
|---|---|
| Prime Mover | Photovoltaic |
| Ownership | Single Owner |
| Nameplate Capacity | 180 MW |
| Summer Capacity | 180 MW |
| Winter Capacity | 180 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | May 2018 |
| Combined Heat & Power | No |
| Sector Name | IPP Non-CHP (2) |
| Energy Source | Solar |
| Time From Cold Shutdown To Full Load | 10M |
| Multiple Fuels | No |
| Solar Details | |
| Single Axis Tracking | Yes |
|---|---|
| Tilt Angle | 60 |
| DC Net Capacity | 234 MW |
| Crystalline Silicon | Yes |
| Net Metering Agreement | No |
| Virtual Net Metering Agreement | No |
Generator BAT1 Details Operating June 2019
| Technology | Batteries |
|---|---|
| Prime Mover | Battery |
| Ownership | Single Owner |
| Nameplate Capacity | 9.9 MW |
| Summer Capacity | 9.9 MW |
| Winter Capacity | 9.9 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | June 2019 |
| Combined Heat & Power | No |
| Sector Name | IPP Non-CHP (2) |
| Energy Source | Electricity used for energy storage |
| Time From Cold Shutdown To Full Load | 10M |
| Energy Storage Details | |
| Nameplate Energy Capacity MWH | 42 |
|---|---|
| Maximum Charge Rate | 9.9 MW |
| Maximum Discharge Rate | 9.9 MW |
| Storage Technology | LIB |
| Nameplate Reactive Power Rating | 4.8 |
| Storage Enclosure Type | CS |
| Frequency Regulation | Yes |
| Load Following | P |
| Excess Wind And Solar Generation | Yes |
| Ac Coupled | Yes |
| Direct Support Of Another Unit | Yes |
| Direct Support Plant Id | 60123 |
| Direct Support Gen Id | CGAP |
| Support T D Asset | No |
Castle Gap Solar Hybrid Plant Owners
| Owner Name | Address | Generator | Ownership | We couldn't locate any owners for this plant |
|---|
Power Plants with Similar Net Generation
Power plants with a similar annual net generation from Solar.
| Rank | Plant Name | Plant Location | Annual Generation |
|---|---|---|---|
| #185 | Corazon Energy LLC | Rachito Las Lomas, TX | 380.1 GWh |
| #186 | Cavalry Solar Hybrid | Monon, IN | 365.9 GWh |
| #187 | Grant County | Town of Potosi, WI | 378.4 GWh |
| #188 | Prairie Wolf Solar LLC | Ashmore Township, IL | 378.3 GWh |
| #189 | Dry Lake Solar Energy Center | Moapa, NV | 360.0 GWh |
| #190 | SR Russellville | Olmstead, KY | 375.0 GWh |
| #191 | Rambler | San Angelo, TX | 374.3 GWh |
| #192 | Harquahala Sun Solar Project | Tonopah, AZ | 374.3 GWh |
| #193 | Zier Solar | Brackettville, TX | 368.2 GWh |
| #194 | Imperial Solar Energy Center West | Seeley, CA | 373.6 GWh |
| #196 | RE Roserock | Fort Stockton, TX | 372.2 GWh |
| #197 | Markum Solar Farm | Valley Mills, TX | 371.9 GWh |
| #198 | Blythe Solar III, LLC Hybrid | Blythe, CA | 357.8 GWh |
| #199 | Raceway Solar & Storage | Lancaster, CA | 362.3 GWh |
| #200 | Maverick Solar 7, LLC | Desert Center, CA | 369.0 GWh |
| #201 | Edwards Sanborn E1B | Mojave, CA | 351.5 GWh |
| #202 | Montague Solar | Arlington, OR | 367.7 GWh |
| #203 | Maverick Solar, LLC | Desert Center, CA | 366.7 GWh |
| #204 | Impact Solar 1 | Deport, TX | 366.3 GWh |
| #205 | Swift Air Solar I | Goldsmith, TX | 364.7 GWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Castle Gap Solar Hybrid.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Alamo 6 | Fort Stockton, TX | 220.8 GWh | 18.1 mi |
| Appaloosa Run Wind | Rankin, TX | 693.0 GWh | 26.9 mi |
| Crane Solar Project | Crane, TX | 401.1 GWh | 2.3 mi |
| Desert Sky | Iraan, TX | 496.7 GWh | 25.7 mi |
| East Pecos Solar | McCamey, TX | 220.2 GWh | 17.6 mi |
| Emerald Grove | Crane, TX | 251.9 GWh | 12.3 mi |
| Greasewood II LLC | Girvin, TX | 846.1 GWh | 22.3 mi |
| Greasewood Solar | Fort Stockton, TX | 432.9 GWh | 20.1 mi |
| High Lonesome Wind Power, LLC Hybrid | Rankin, TX | 1.3 TWh | 23.8 mi |
| King Mountain Wind Ranch 1 | McCamey, TX | 603.4 GWh | 3.6 mi |
| Midway Solar - TX | Fort Stockton, TX | 318.8 GWh | 18.2 mi |
| NWP Indian Mesa Wind Farm | Iraan, TX | 205.6 GWh | 22.7 mi |
| Pearl Solar | Fort Stockton, TX | 93.7 GWh | 18.5 mi |
| RE Maplewood | McCamey, TX | 513.6 GWh | 19.3 mi |
| Roadrunner, LLC Hybrid | McCamey, TX | 1.1 TWh | 5.3 mi |
| Swift Air Solar II | Odessa, TX | 81.5 GWh | 35.5 mi |
| Swift Air Solar III | Odessa, TX | 54.6 GWh | 35.5 mi |
| Upton County Solar | McCamey, TX | 281.8 GWh | 1.4 mi |
| Woodward Mountain I | Girvin, TX | 168.0 GWh | 22.6 mi |
| Woodward Mountain II | Girvin, TX | 168.0 GWh | 22.6 mi |