Rate & Roof

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

Sun on a roof in Sundown.

The PVWatts model puts a generic roof array in Sundown at 1,752 kWh a year for each kW of panels, using typical-year weather from a station 1.4 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 Sundown climbs and falls, and the modeled output follows it.

Sun elevation through the day over Sundown The sun's path at latitude 33.46, 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 kW1,752 kWh

kWh per kW DC, modeled by PVWatts. Best month 173, weakest 114: a ratio of 1.52.

How Sundown comparesderived from the figures above

Where Sundown sits.

Sundown ranks 48th of 1220 Texas places modeled here, at the 96th percentile. Its 1,752 kWh per kW is above the Texas median of 1,515. The strongest months are May, July, June and the weakest are December, November, January; output peaks in May and bottoms out in December. In all, 27.9% of the year arrives in June, July and August, less than the 29.3% of the median place.

Closest modeled neighbors

  • Levelland, 18 km northeast: 1,761 kWh per kW, 9 more than Sundown.
  • Whiteface, 19 km northwest: 1,780 kWh per kW, 28 more than Sundown.
  • Opdyke West, 23 km northeast: 1,735 kWh per kW, 17 less than Sundown.
  • Meadow, 29 km southeast: 1,752 kWh per kW, 0 the same as Sundown.
  • Ropesville, 31 km east: 1,752 kWh per kW, 0 the same as Sundown.
  • Smyer, 34 km northeast: 1,732 kWh per kW, 20 less than Sundown.
  • Brownfield, 37 km southeast: 1,763 kWh per kW, 11 more than Sundown.
  • Morton, 38 km northwest: 1,759 kWh per kW, 7 more than Sundown.
  • Plains, 43 km southwest: 1,774 kWh per kW, 22 more than Sundown.

Against El Paso

The nearest of the six largest modeled places is El Paso, 410 km to the southwest, at 1,835 kWh per kW. Sundown models 83 kWh per kW (4.5%) below it. Sundown lies 1.61 degrees of latitude north of El Paso, and the sun stands higher in the sky the further south you go, which matches its lower modeled output. The two weather stations sit a similar distance from their points (1.4 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 Fort Worth, 485 km east, where the same model gives 1,535 kWh per kW, so Sundown runs 217 above that figure. Against the Texas median place month by month, Sundown runs at least 2% higher in January, February, March, April, May, June, July, August, September, October, November, December.

Electricity in Hockley CountyEIA-861

Electricity prices nearby

Providers listed in the county

They are the largest bundled providers 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. Priced at the first provider's average, the modeled 1,752 kWh would come to $244 per kW a year, plain multiplication and not a savings estimate.

Modeled estimateruns in your browser

Size the array, see the kWh.

Scale the Sundown 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 $270 per kW a year as plain multiplication.

Modeled estimate

Modeled output, kWh a year

10,512 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 548829

Month by month, per kW.

Modeled AC output in Sundown, Texas, kWh per kW DC, typical weather year
MonthkWh per kW
January124.0
February129.6
March159.7
April162.6
May173.0
June162.8
July166.1
August159.7
September145.5
October139.2
November115.4
December114.1
Year1,752

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 33.46, -102.49 (Sundown, population 1,306). Weather: typical-year data from station 548829, 1.4 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.