Sun on a roof in South Mountain.

How South Mountain comparesderived from the figures above

Where South Mountain sits.

South Mountain ranks 436th of 1220 Texas places modeled here, at the 64th percentile. Its 1,536 kWh per kW is above the Texas median of 1,515. The strongest months are July, August, June and the weakest are December, February, January; output peaks in July and bottoms out in December. In all, 29.2% of the year arrives in June, July and August, less than the 29.3% of the median place.

Closest modeled neighbors

• Gatesville, 7 km west: 1,522 kWh per kW, 14 less than South Mountain.
• Oglesby, 16 km east: 1,547 kWh per kW, 11 more than South Mountain.
• McGregor, 24 km east: 1,536 kWh per kW, 0 the same as South Mountain.
• Crawford, 24 km northeast: 1,537 kWh per kW, 1 more than South Mountain.
• Valley Mills, 32 km northeast: 1,514 kWh per kW, 22 less than South Mountain.
• Moody, 34 km southeast: 1,531 kWh per kW, 5 less than South Mountain.
• Morgan's Point Resort, 38 km southeast: 1,520 kWh per kW, 16 less than South Mountain.
• Clifton, 39 km north: 1,522 kWh per kW, 14 less than South Mountain.
• Cranfills Gap, 39 km north: 1,550 kWh per kW, 14 more than South Mountain.

Against Austin

The nearest of the six largest modeled places is Austin, 127 km to the south, at 1,483 kWh per kW. South Mountain models 53 kWh per kW (3.6%) above it. South Mountain lies 1.14 degrees of latitude north of Austin, which on sun angle alone would point the other way, so clouds, haze and the weather station's record carry the difference. The two weather stations sit a similar distance from their points (2.2 km and 1.5 km), so station distance does little to explain the gap, and the weather record does the rest.

The second-nearest large place is Fort Worth, 152 km north, where the same model gives 1,535 kWh per kW, so South Mountain runs 1 above that figure. Against the Texas median place month by month, South Mountain runs at least 2% higher in January, February, July, September, November. It runs at least 2% lower in December.

Electricity in Coryell CountyEIA-861

Electricity prices nearby

EIA lists Oncor Electric Delivery and Texas-New Mexico Power in this county. Where South Mountain is on Oncor Electric Delivery and Texas-New Mexico Power's lines, homes buy energy from a retail electricity provider and the price depends on the plan. Parts of South Mountain 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 1,536 kWh at $235 per kW a year, plain multiplication and not a savings estimate or an offer.

Also listed in the county

• United Electric Coop Service Inc: 13.91¢ per kWh, a bundled average, 91,268 residential customers across 14 counties.
• Hamilton County Elec Coop Assn: 12.64¢ per kWh, a bundled average, 19,876 residential customers across 7 counties.
• Heart of Texas Electric Coop: 11.89¢ per kWh, a bundled average, 18,476 residential customers across 7 counties.
• Oncor Electric Delivery Company LLC: 5.64¢ per kWh, delivery charges only, before the retail energy price, 3,545,814 residential customers across 99 counties.

These utilities serve other parts of the county, which can include parts of South Mountain. 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 South Mountain 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 $237 per kW a year as plain multiplication.