Rate & Roof

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

Sun on a roof in Garrison.

The PVWatts model puts a generic roof array in Garrison at 1,385 kWh a year for each kW of panels, using typical-year weather from a station 2.4 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 Garrison climbs and falls, and the modeled output follows it.

Sun elevation through the day over Garrison The sun's path at latitude 31.83, 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 kW1,385 kWh

kWh per kW DC, modeled by PVWatts. Best month 140, weakest 79: a ratio of 1.77.

How Garrison comparesderived from the figures above

Where Garrison sits.

Garrison ranks 1177th of 1220 Texas places modeled here, at the 4th percentile. Its 1,385 kWh per kW is below the Texas median of 1,515. The strongest months are July, August, May and the weakest are December, February, January; output peaks in July and bottoms out in December. In all, 29.6% of the year arrives in June, July and August, more than the 29.3% of the median place.

Closest modeled neighbors

  • Timpson, 12 km northeast: 1,396 kWh per kW, 11 more than Garrison.
  • Appleby, 17 km southwest: 1,394 kWh per kW, 9 more than Garrison.
  • Mount Enterprise, 20 km northwest: 1,401 kWh per kW, 16 more than Garrison.
  • Gary City, 25 km northeast: 1,404 kWh per kW, 19 more than Garrison.
  • Tenaha, 26 km northeast: 1,397 kWh per kW, 12 more than Garrison.
  • Nacogdoches, 29 km southwest: 1,401 kWh per kW, 16 more than Garrison.
  • Center, 30 km east: 1,385 kWh per kW, 0 the same as Garrison.
  • Cushing, 33 km west: 1,434 kWh per kW, 49 more than Garrison.
  • Carthage, 38 km north: 1,386 kWh per kW, 1 more than Garrison.

Against Dallas

The nearest of the six largest modeled places is Dallas, 239 km to the northwest, at 1,500 kWh per kW. Garrison models 115 kWh per kW (7.7%) below it. Garrison lies 0.96 degrees of latitude south of Dallas, 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 2.4 km), so station distance does little to explain the gap, and the weather record does the rest.

The second-nearest large place is Houston, 243 km south, where the same model gives 1,422 kWh per kW, so Garrison runs 37 below that figure. It runs at least 2% lower in January, February, March, April, May, June, July, August, September, October, November, December.

Electricity in Nacogdoches CountyEIA-861

Electricity prices nearby

EIA lists Oncor Electric Delivery in this county. Where Garrison is on Oncor Electric Delivery's lines, homes buy energy from a retail electricity provider and the price depends on the plan. Parts of Garrison 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 1,385 kWh at $212 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 Garrison. 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 Garrison 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 $213 per kW a year as plain multiplication.

Modeled estimate

Modeled output, kWh a year

8,310 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 752633

Month by month, per kW.

Modeled AC output in Garrison, Texas, kWh per kW DC, typical weather year
MonthkWh per kW
January92.8
February90.0
March112.0
April128.5
May136.1
June133.0
July139.5
August137.6
September123.6
October116.1
November97.2
December79.0
Year1,385

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 31.83, -94.49 (Garrison, population 827). Weather: typical-year data from station 752633, 2.4 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.