Rate & Roof

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

Sun on a roof in Keller.

The PVWatts model puts a generic roof array in Keller at 1,558 kWh a year for each kW of panels, using typical-year weather from a station 0.0 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 Keller climbs and falls, and the modeled output follows it.

Sun elevation through the day over Keller The sun's path at latitude 32.93, 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 kW1,558 kWh

kWh per kW DC, modeled by PVWatts. Best month 159, weakest 99: a ratio of 1.6.

How Keller comparesderived from the figures above

Where Keller sits.

Keller ranks 25th of 157 Texas places modeled here, at the 85th percentile. Its 1,558 kWh per kW is above the Texas median of 1,518. 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, 29.5% of the year arrives in June, July and August, more than the 29.4% of the median place.

Closest modeled neighbors

  • Southlake, 7 km east: 1,526 kWh per kW, 32 less than Keller.
  • Watauga, 7 km southwest: 1,558 kWh per kW, 0 the same as Keller.
  • North Richland Hills, 8 km south: 1,565 kWh per kW, 7 more than Keller.
  • Colleyville, 8 km southeast: 1,551 kWh per kW, 7 less than Keller.
  • Hurst, 11 km south: 1,536 kWh per kW, 22 less than Keller.
  • Bedford, 12 km southeast: 1,542 kWh per kW, 16 less than Keller.
  • Grapevine, 13 km east: 1,568 kWh per kW, 10 more than Keller.
  • Haltom City, 13 km south: 1,542 kWh per kW, 16 less than Keller.
  • Saginaw, 16 km southwest: 1,526 kWh per kW, 32 less than Keller.

Against Fort Worth

The nearest of the six largest modeled places is Fort Worth, 21 km to the southwest, at 1,535 kWh per kW. Keller models 23 kWh per kW (1.5%) above it. At 0.15 degrees of latitude apart, the two sit at almost the same sun angle, so geometry explains little. The weather station for Keller is 0.0 km from the modeled point, against 1.5 km for Fort Worth, so part of the gap can come from which station's typical year was used.

The second-nearest large place is Dallas, 45 km east, where the same model gives 1,500 kWh per kW, so Keller runs 58 above that figure. Against the Texas median place month by month, Keller runs at least 2% higher in January, February, May, July, August, September, November.

Electricity in Tarrant CountyEIA-861

Electricity prices nearby

EIA lists Oncor Electric Delivery in this county. Where Keller is on Oncor Electric Delivery's lines, homes buy energy from a retail electricity provider and the price depends on the plan. Parts of Keller 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 1,558 kWh at $239 per kW a year, plain multiplication and not a savings estimate or an offer.

Also listed in the county

  • Denton County Elec Coop, Inc: 13.18¢ per kWh, a bundled average, 310,805 residential customers across 6 counties.
  • Tri-County Electric Coop, Inc (TX): 15.07¢ per kWh, a bundled average, 117,857 residential customers across 16 counties.
  • United Electric Coop Service Inc: 13.91¢ per kWh, a bundled average, 91,268 residential customers across 14 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 Keller. 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 Keller 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 $241 per kW a year as plain multiplication.

Modeled estimate

Modeled output, kWh a year

9,348 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 692338

Month by month, per kW.

Modeled AC output in Keller, Texas, kWh per kW DC, typical weather year
MonthkWh per kW
January109.3
February103.6
March127.1
April135.3
May147.3
June146.2
July158.6
August155.1
September140.4
October124.6
November111.3
December99.1
Year1,558

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 32.93, -97.22 (Keller, population 46,643). Weather: typical-year data from station 692338, 0.0 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.