Sun on a roof in Charlotte.

How Charlotte comparesderived from the figures above

Where Charlotte sits.

Charlotte ranks 505th of 1220 Texas places modeled here, at the 59th percentile. Its 1,526 kWh per kW is above the Texas median of 1,515. The strongest months are August, July, June and the weakest are January, December, November; output peaks in August and bottoms out in January. 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

• Jourdanton, 17 km east: 1,512 kWh per kW, 14 less than Charlotte.
• Christine, 21 km east: 1,508 kWh per kW, 18 less than Charlotte.
• Pleasanton, 22 km northeast: 1,502 kWh per kW, 24 less than Charlotte.
• Poteet, 24 km northeast: 1,515 kWh per kW, 11 less than Charlotte.
• Devine, 38 km northwest: 1,522 kWh per kW, 4 less than Charlotte.
• Pearsall, 39 km west: 1,538 kWh per kW, 12 more than Charlotte.
• Natalia, 39 km north: 1,508 kWh per kW, 18 less than Charlotte.
• Somerset, 41 km north: 1,504 kWh per kW, 22 less than Charlotte.
• Lytle, 42 km north: 1,510 kWh per kW, 16 less than Charlotte.

Against San Antonio

The nearest of the six largest modeled places is San Antonio, 69 km to the north, at 1,505 kWh per kW. Charlotte models 21 kWh per kW (1.4%) above it. Charlotte lies 0.6 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 Charlotte is 1.1 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, 185 km northeast, where the same model gives 1,483 kWh per kW, so Charlotte runs 43 above that figure. Against the Texas median place month by month, Charlotte runs at least 2% higher in February, October, December. It runs at least 2% lower in January, June, July, September.

Electricity in Atascosa CountyEIA-861

Electricity prices nearby

EIA lists AEP Texas Central in this county. Where Charlotte is on AEP Texas Central's lines, homes buy energy from a retail electricity provider and the price depends on the plan. Parts of Charlotte 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 1,526 kWh at $234 per kW a year, plain multiplication and not a savings estimate or an offer.

Also listed in the county

• City of San Antonio: 12.4¢ per kWh, a bundled average, 888,946 residential customers across 8 counties.
• 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 Charlotte. 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 Charlotte 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 $235 per kW a year as plain multiplication.