Rate & Roof

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

Sun on a roof in Plano.

The PVWatts model puts a generic roof array in Plano at 1,527 kWh a year for each kW of panels, using typical-year weather from a station 0.9 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 Plano climbs and falls, and the modeled output follows it.

Sun elevation through the day over Plano The sun's path at latitude 33.05, 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 kW1,527 kWh

kWh per kW DC, modeled by PVWatts. Best month 155, weakest 95: a ratio of 1.63.

How Plano comparesderived from the figures above

Where Plano sits.

Plano ranks 58th of 157 Texas places modeled here, at the 64th percentile. Its 1,527 kWh per kW is above the Texas median of 1,518. The strongest months are August, June, July and the weakest are November, February, December; output peaks in August and bottoms out in November. In all, 30.0% of the year arrives in June, July and August, more than the 29.4% of the median place.

Closest modeled neighbors

  • Richardson, 10 km southeast: 1,540 kWh per kW, 13 more than Plano.
  • Allen, 10 km northeast: 1,530 kWh per kW, 3 more than Plano.
  • Murphy, 13 km east: 1,506 kWh per kW, 21 less than Plano.
  • Frisco, 14 km northwest: 1,517 kWh per kW, 10 less than Plano.
  • The Colony, 15 km west: 1,496 kWh per kW, 31 less than Plano.
  • Carrollton, 15 km southwest: 1,564 kWh per kW, 37 more than Plano.
  • Farmers Branch, 18 km southwest: 1,503 kWh per kW, 24 less than Plano.
  • Sachse, 18 km southeast: 1,507 kWh per kW, 20 less than Plano.
  • McKinney, 19 km northeast: 1,526 kWh per kW, 1 less than Plano.

Against Dallas

The nearest of the six largest modeled places is Dallas, 29 km to the south, at 1,500 kWh per kW. Plano models 27 kWh per kW (1.8%) above it. At 0.26 degrees of latitude apart, the two sit at almost the same sun angle, so geometry explains little. The weather station for Plano is 0.9 km from the modeled point, against 2.4 km for Dallas, so part of the gap can come from which station's typical year was used.

The second-nearest large place is Fort Worth, 64 km southwest, where the same model gives 1,535 kWh per kW, so Plano runs 8 below that figure. Against the Texas median place month by month, Plano runs at least 2% higher in January, June, August, September, December. It runs at least 2% lower in July, November.

Electricity in Collin County, Denton CountyEIA-861

Electricity prices nearby

EIA lists Oncor Electric Delivery and Texas-New Mexico Power in this county. Most homes in Plano buy energy from a retail electricity provider over the lines of Oncor Electric Delivery and Texas-New Mexico Power, so the price depends on the plan you choose. 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 1,527 kWh at $234 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.
  • Grayson-Collin Elec Coop, Inc: 17.04¢ per kWh, a bundled average, 97,950 residential customers across 4 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 Plano. 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 Plano 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 $236 per kW a year as plain multiplication.

Modeled estimate

Modeled output, kWh a year

9,162 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 703851

Month by month, per kW.

Modeled AC output in Plano, Texas, kWh per kW DC, typical weather year
MonthkWh per kW
January105.4
February101.4
March126.8
April135.0
May140.6
June152.8
July149.3
August155.4
September139.5
October123.6
November95.2
December101.7
Year1,527

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 33.05, -96.75 (Plano, population 293,286). Weather: typical-year data from station 703851, 0.9 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.