Sun on a roof in Dilley.

How Dilley comparesderived from the figures above

Where Dilley sits.

Dilley ranks 290th of 1220 Texas places modeled here, at the 76th percentile. Its 1,566 kWh per kW is above the Texas median of 1,515. The strongest months are August, July, June and the weakest are January, November, December; output peaks in August and bottoms out in January. In all, 29.0% of the year arrives in June, July and August, less than the 29.3% of the median place.

Closest modeled neighbors

• Pearsall, 26 km north: 1,538 kWh per kW, 28 less than Dilley.
• Cotulla, 26 km south: 1,564 kWh per kW, 2 less than Dilley.
• Big Wells, 40 km west: 1,552 kWh per kW, 14 less than Dilley.
• Charlotte, 51 km northeast: 1,526 kWh per kW, 40 less than Dilley.
• Devine, 60 km northeast: 1,522 kWh per kW, 44 less than Dilley.
• Asherton, 62 km southwest: 1,563 kWh per kW, 3 less than Dilley.
• Crystal City, 63 km west: 1,566 kWh per kW, 0 the same as Dilley.
• Natalia, 66 km northeast: 1,508 kWh per kW, 58 less than Dilley.
• Christine, 68 km east: 1,508 kWh per kW, 58 less than Dilley.

Against San Antonio

The nearest of the six largest modeled places is San Antonio, 109 km to the northeast, at 1,505 kWh per kW. Dilley models 61 kWh per kW (4.1%) above it. Dilley lies 0.79 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 two weather stations sit a similar distance from their points (2.2 km and 2.2 km), so station distance does little to explain the gap, and the weather record does the rest.

The second-nearest large place is Austin, 228 km northeast, where the same model gives 1,483 kWh per kW, so Dilley runs 83 above that figure. Against the Texas median place month by month, Dilley runs at least 2% higher in February, March, April, August, October, December.

Electricity in Frio CountyEIA-861

Electricity prices nearby

EIA lists AEP Texas Central in this county. Where Dilley is on AEP Texas Central's lines, homes buy energy from a retail electricity provider and the price depends on the plan. Parts of Dilley 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 1,566 kWh at $240 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.
• Karnes Electric Coop Inc: 10.25¢ per kWh, a bundled average, 13,599 residential customers across 12 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 Dilley. 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 Dilley 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 $241 per kW a year as plain multiplication.