Rate & Roof

Presidio, TXLocal --:--Sun now --Daylight today --

Sun on a roof in Presidio.

The PVWatts model puts a generic roof array in Presidio at 1,811 kWh a year for each kW of panels, using typical-year weather from a station 1.5 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 Presidio climbs and falls, and the modeled output follows it.

Sun elevation through the day over Presidio The sun's path at latitude 29.56, computed from solar geometry. The upper dotted arc is the June solstice and the lower one the December solstice; the solid arc is the month being shown.
MonthAll 12 monthsNoon sun-Daylight-Modeled output per kW1,811 kWh

kWh per kW DC, modeled by PVWatts. Best month 172, weakest 132: a ratio of 1.31.

How Presidio comparesderived from the figures above

Where Presidio sits.

Presidio ranks 11th of 1220 Texas places modeled here, at the 99th percentile. Its 1,811 kWh per kW is above the Texas median of 1,515. The strongest months are May, March, April and the weakest are December, November, January; output peaks in May and bottoms out in December. In all, 25.4% of the year arrives in June, July and August, less than the 29.3% of the median place.

Closest modeled neighbors

  • Marfa, 90 km north: 1,829 kWh per kW, 18 more than Presidio.
  • Alpine, 112 km northeast: 1,783 kWh per kW, 28 less than Presidio.
  • Valentine, 115 km north: 1,803 kWh per kW, 8 less than Presidio.
  • Balmorhea, 169 km north: 1,742 kWh per kW, 69 less than Presidio.
  • Van Horn, 170 km north: 1,829 kWh per kW, 18 more than Presidio.
  • Toyah, 202 km north: 1,782 kWh per kW, 29 less than Presidio.
  • Fort Stockton, 206 km northeast: 1,763 kWh per kW, 48 less than Presidio.
  • Town of Pecos, 219 km north: 1,792 kWh per kW, 19 less than Presidio.
  • Barstow, 231 km northeast: 1,780 kWh per kW, 31 less than Presidio.

Against El Paso

The nearest of the six largest modeled places is El Paso, 322 km to the northwest, at 1,835 kWh per kW. Presidio models 24 kWh per kW (1.3%) below it. Presidio lies 2.29 degrees of latitude south of El Paso, 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 (1.5 km and 0.9 km), so station distance does little to explain the gap, and the weather record does the rest.

The second-nearest large place is San Antonio, 566 km east, where the same model gives 1,505 kWh per kW, so Presidio runs 306 above that figure. Against the Texas median place month by month, Presidio runs at least 2% higher in January, February, March, April, May, June, September, October, November, December.

Electricity in Presidio CountyEIA-861

Electricity prices nearby

EIA lists AEP Texas North in this county. Where Presidio is on AEP Texas North's lines, homes buy energy from a retail electricity provider and the price depends on the plan. Parts of Presidio 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 1,811 kWh at $277 per kW a year, plain multiplication and not a savings estimate or an offer.

Also listed in the county

These utilities serve other parts of the county, which can include parts of Presidio. 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 Presidio 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 $279 per kW a year as plain multiplication.

Modeled estimate

Modeled output, kWh a year

10,866 kWh/yr

About - kWh in an average month. Priced at the chosen rate that energy comes to - a year, by multiplication only.

Assumes the same tilt, direction and equipment as the model below. Real output depends on the roof, shade, equipment and weather.

PVWatts v8station 499634

Month by month, per kW.

Modeled AC output in Presidio, Texas, kWh per kW DC, typical weather year
MonthkWh per kW
January134.3
February140.1
March170.5
April168.6
May172.2
June156.0
July152.4
August151.5
September150.3
October150.6
November133.1
December131.9
Year1,811

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 29.56, -104.37 (Presidio, population 3,047). Weather: typical-year data from station 499634, 1.5 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.

Texas electricity prices and providers

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.

Email updatesdouble opt-in

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.

Read this first

  • A model estimate for a generic system at this point, not a measurement and not a promise of output.
  • Shading, roof pitch, equipment and local rates will differ.
  • All prices on this site are in cents per kWh unless marked otherwise. Bills are US dollars per month.

Credits and notices

The credits and notices that each data source requires are printed word for word with that source in the Sources list below.