Rate & Roof

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

Sun on a roof in Huntsville.

The PVWatts model puts a generic roof array in Huntsville at 1,413 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 Huntsville climbs and falls, and the modeled output follows it.

Sun elevation through the day over Huntsville The sun's path at latitude 30.7, 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 kW1,413 kWh

kWh per kW DC, modeled by PVWatts. Best month 140, weakest 91: a ratio of 1.54.

How Huntsville comparesderived from the figures above

Where Huntsville sits.

Huntsville ranks 152nd of 157 Texas places modeled here, at the 4th percentile. Its 1,413 kWh per kW is below the Texas median of 1,518. The strongest months are July, May, August and the weakest are February, January, December; output peaks in July and bottoms out in February. In all, 29.2% of the year arrives in June, July and August, less than the 29.4% of the median place.

Closest modeled neighbors

  • Conroe, 42 km south: 1,395 kWh per kW, 18 less than Huntsville.
  • College Station, 73 km west: 1,421 kWh per kW, 8 more than Huntsville.
  • Bryan, 79 km west: 1,456 kWh per kW, 43 more than Huntsville.
  • Brenham, 101 km southwest: 1,469 kWh per kW, 56 more than Huntsville.
  • Houston, 102 km south: 1,422 kWh per kW, 9 more than Huntsville.
  • Lufkin, 104 km northeast: 1,362 kWh per kW, 51 less than Huntsville.
  • Katy, 105 km south: 1,472 kWh per kW, 59 more than Huntsville.
  • Fulshear, 117 km south: 1,461 kWh per kW, 48 more than Huntsville.
  • Palestine, 117 km north: 1,469 kWh per kW, 56 more than Huntsville.

Against Houston

The nearest of the six largest modeled places is Houston, 102 km to the south, at 1,422 kWh per kW. Huntsville models 9 kWh per kW (0.6%) below it. The two figures are within 1 percent, which is about the size of the difference you get from two neighboring weather stations alone, so this page's result is effectively the same as Houston's.

The second-nearest large place is Austin, 215 km west, where the same model gives 1,483 kWh per kW, so Huntsville runs 70 below that figure. It runs at least 2% lower in January, February, March, April, May, June, July, August, September, October, November, December.

Electricity in Walker 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 1,413 kWh would come to $196 per kW a year, plain multiplication and not a savings estimate.

Modeled estimateruns in your browser

Size the array, see the kWh.

Scale the Huntsville 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 15.47¢ per kWh. At that rate the modeled output is worth $219 per kW a year as plain multiplication.

Modeled estimate

Modeled output, kWh a year

8,478 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 730493

Month by month, per kW.

Modeled AC output in Huntsville, Texas, kWh per kW DC, typical weather year
MonthkWh per kW
January92.9
February90.6
March106.7
April127.5
May139.2
June133.5
July139.6
August139.2
September125.9
October121.2
November103.2
December93.0
Year1,413

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 30.7, -95.55 (Huntsville, population 49,500). Weather: typical-year data from station 730493, 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.