Big Wells, TXLocal --:--Sun now --Daylight today --
Sun on a roof in Big Wells.
The PVWatts model puts a generic roof array in Big Wells at 1,552 kWh a year for each kW of panels, using typical-year weather from a station 1.0 km away. A modeled estimate for a standard setup, not a measurement of any roof.
A year on one roof.
Scroll from January to December: the noon sun over Big Wells climbs and falls, and the modeled output follows it.
kWh per kW DC, modeled by PVWatts. Best month 154, weakest 103: a ratio of 1.5.
How Big Wells comparesderived from the figures above
Where Big Wells sits.
Big Wells ranks 342nd of 1220 Texas places modeled here, at the 72nd percentile. Its 1,552 kWh per kW is above the Texas median of 1,515. The strongest months are August, July, May and the weakest are December, January, November; output peaks in August and bottoms out in December. In all, 28.9% of the year arrives in June, July and August, less than the 29.3% of the median place.
Closest modeled neighbors
- Asherton, 23 km southwest: 1,563 kWh per kW, 11 more than Big Wells.
- Crystal City, 29 km northwest: 1,566 kWh per kW, 14 more than Big Wells.
- Carrizo Springs, 29 km west: 1,575 kWh per kW, 23 more than Big Wells.
- Cotulla, 35 km southeast: 1,564 kWh per kW, 12 more than Big Wells.
- Dilley, 40 km east: 1,566 kWh per kW, 14 more than Big Wells.
- Pearsall, 58 km northeast: 1,538 kWh per kW, 14 less than Big Wells.
- Encinal, 63 km south: 1,554 kWh per kW, 2 more than Big Wells.
- Uvalde, 75 km north: 1,550 kWh per kW, 2 less than Big Wells.
- Sabinal, 84 km north: 1,516 kWh per kW, 36 less than Big Wells.
Against San Antonio
The nearest of the six largest modeled places is San Antonio, 142 km to the northeast, at 1,505 kWh per kW. Big Wells models 47 kWh per kW (3.1%) above it. Big Wells lies 0.89 degrees of latitude south of San Antonio, and the sun stands higher in the sky the further south you go, which matches its higher modeled output. The weather station for Big Wells is 1.0 km from the modeled point, against 2.2 km for San Antonio, so part of the gap can come from which station's typical year was used.
The second-nearest large place is Austin, 261 km northeast, where the same model gives 1,483 kWh per kW, so Big Wells runs 69 above that figure. Against the Texas median place month by month, Big Wells runs at least 2% higher in January, February, March, August, October, December. It runs at least 2% lower in April, June.
Electricity in Dimmit CountyEIA-861
Electricity prices nearby
EIA lists AEP Texas Central in this county. Where Big Wells is on AEP Texas Central's lines, homes buy energy from a retail electricity provider and the price depends on the plan. Parts of Big Wells may instead be served by a co-op or utility listed below, which sets its own rates; check your bill. For scale only, the median 2025 average price across the 60 Texas retail providers on this site is 15.32¢ per kWh, which would put the modeled 1,552 kWh at $238 per kW a year, plain multiplication and not a savings estimate or an offer.
Also listed in the county
- Medina Electric Coop, Inc: 12.54¢ per kWh, a bundled average, 30,778 residential customers across 17 counties.
- Rio Grande Electric Coop, Inc: 18.29¢ per kWh, a bundled average, 9,371 residential customers across 18 counties.
- AEP Texas Central Company: 5.91¢ per kWh, delivery charges only, before the retail energy price, 793,896 residential customers across 44 counties.
These utilities serve other parts of the county, which can include parts of Big Wells. They are the largest bundled providers, and the largest delivery-only one, whose EIA service territory lists the county. A county can list several, and which one serves a street depends on the address, so check your bill.
Modeled estimateruns in your browser
Size the array, see the kWh.
Scale the Big Wells model to another array size, take off extra losses for shade or dirt, and price the energy at any rate. It is arithmetic on the PVWatts output above, nothing more: not a quote, not a savings estimate and not advice.
Starting rate: the Texas residential average of 15.4¢ per kWh. At that rate the modeled output is worth $239 per kW a year as plain multiplication.
PVWatts v8station 627851
Month by month, per kW.
| Month | kWh per kW |
|---|---|
| January | 104.7 |
| February | 116.5 |
| March | 130.4 |
| April | 132.3 |
| May | 144.3 |
| June | 142.1 |
| July | 152.9 |
| August | 153.7 |
| September | 134.6 |
| October | 130.7 |
| November | 107.4 |
| December | 102.7 |
| Year | 1,552 |
Model assumptions
- System size
- 1 kWDC, results scale per kW
- Mount
- fixed roof mount
- Tilt
- 20°
- Azimuth
- 180°due south
- Modules
- standard
- System losses
- 14%
Location 28.57, -99.57 (Big Wells, population 455). Weather: typical-year data from station 627851, 1.0 km from that point.
Getting a measured number
A model cannot see your roof. Installers measure pitch, shade and the electrical panel on site. Quote marketplaces such as EnergySage, SolarReviews and WattBuy collect bids from local installers. Rate & Roof does not rank installers.
Next step
Payback, buyback.
The sliders above price the energy at one rate. The payback calculator adds the system cost and your buyback plan type, and shows every assumption. It is an estimate, not advice.
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Rates change. Get told.
One list, for Texas solar buyback plans. We write when a tracked rate changes and when new city data is published. Nothing else, and nothing until you confirm.