Sun on a roof in Big Lake.

How Big Lake comparesderived from the figures above

Where Big Lake sits.

Big Lake ranks 87th of 1220 Texas places modeled here, at the 93rd percentile. Its 1,721 kWh per kW is above the Texas median of 1,515. The strongest months are May, April, July and the weakest are December, February, January; output peaks in May and bottoms out in December. In all, 27.6% of the year arrives in June, July and August, less than the 29.3% of the median place.

Closest modeled neighbors

• Rankin, 47 km west: 1,745 kWh per kW, 24 more than Big Lake.
• Iraan, 53 km southwest: 1,709 kWh per kW, 12 less than Big Lake.
• Mertzon, 60 km east: 1,654 kWh per kW, 67 less than Big Lake.
• McCamey, 74 km west: 1,734 kWh per kW, 13 more than Big Lake.
• Sterling City, 84 km northeast: 1,701 kWh per kW, 20 less than Big Lake.
• Crane, 88 km west: 1,769 kWh per kW, 48 more than Big Lake.
• Eldorado, 89 km southeast: 1,657 kWh per kW, 64 less than Big Lake.
• San Angelo, 99 km east: 1,652 kWh per kW, 69 less than Big Lake.
• Forsan, 103 km north: 1,701 kWh per kW, 20 less than Big Lake.

Against San Antonio

The nearest of the six largest modeled places is San Antonio, 341 km to the southeast, at 1,505 kWh per kW. Big Lake models 216 kWh per kW (14.4%) above it. Big Lake lies 1.73 degrees of latitude north of San Antonio, 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 (2.4 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, 367 km east, where the same model gives 1,483 kWh per kW, so Big Lake runs 238 above that figure. Against the Texas median place month by month, Big Lake runs at least 2% higher in January, February, March, April, May, June, July, August, September, October, November, December.

Electricity in Reagan CountyEIA-861

Electricity prices nearby

EIA lists Oncor Electric Delivery and AEP Texas North in this county. Where Big Lake is on Oncor Electric Delivery and AEP Texas North's lines, homes buy energy from a retail electricity provider and the price depends on the plan. Parts of Big Lake 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 1,721 kWh at $264 per kW a year, plain multiplication and not a savings estimate or an offer.

Also listed in the county

• Concho Valley Elec Coop Inc: 13.5¢ per kWh, a bundled average, 12,230 residential customers across 10 counties.
• Southwest Texas Elec Coop, Inc: 14.65¢ per kWh, a bundled average, 5,934 residential customers across 12 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 Big Lake. 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 Lake 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 $265 per kW a year as plain multiplication.