Rate & Roof

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

Sun on a roof in Petersburg.

The PVWatts model puts a generic roof array in Petersburg at 1,747 kWh a year for each kW of panels, using typical-year weather from a station 2.9 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 Petersburg climbs and falls, and the modeled output follows it.

Sun elevation through the day over Petersburg The sun's path at latitude 33.87, 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 kW1,747 kWh

kWh per kW DC, modeled by PVWatts. Best month 168, weakest 113: a ratio of 1.49.

How Petersburg comparesderived from the figures above

Where Petersburg sits.

Petersburg ranks 54th of 1220 Texas places modeled here, at the 96th percentile. Its 1,747 kWh per kW is above the Texas median of 1,515. The strongest months are July, June, May and the weakest are November, December, February; output peaks in July and bottoms out in November. In all, 28.5% of the year arrives in June, July and August, less than the 29.3% of the median place.

Closest modeled neighbors

  • Lorenzo, 23 km south: 1,718 kWh per kW, 29 less than Petersburg.
  • Abernathy, 24 km west: 1,746 kWh per kW, 1 less than Petersburg.
  • Idalou, 24 km south: 1,720 kWh per kW, 27 less than Petersburg.
  • Floydada, 27 km northeast: 1,721 kWh per kW, 26 less than Petersburg.
  • New Deal, 27 km southwest: 1,760 kWh per kW, 13 more than Petersburg.
  • Ralls, 29 km southeast: 1,738 kWh per kW, 9 less than Petersburg.
  • Lockney, 31 km northeast: 1,693 kWh per kW, 54 less than Petersburg.
  • Hale Center, 32 km northwest: 1,728 kWh per kW, 19 less than Petersburg.
  • Plainview, 37 km north: 1,739 kWh per kW, 8 less than Petersburg.

Against Fort Worth

The nearest of the six largest modeled places is Fort Worth, 413 km to the east, at 1,535 kWh per kW. Petersburg models 212 kWh per kW (13.8%) above it. Petersburg lies 1.09 degrees of latitude north of Fort Worth, which on sun angle alone would point the other way, so clouds, haze and the weather station's record carry the difference. The weather station for Petersburg is 2.9 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, 464 km east, where the same model gives 1,500 kWh per kW, so Petersburg runs 247 above that figure. Against the Texas median place month by month, Petersburg runs at least 2% higher in January, February, March, April, May, June, July, August, September, October, November, December.

Electricity in Hale 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 1,747 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 Petersburg 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 $269 per kW a year as plain multiplication.

Modeled estimate

Modeled output, kWh a year

10,482 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 573863

Month by month, per kW.

Modeled AC output in Petersburg, Texas, kWh per kW DC, typical weather year
MonthkWh per kW
January123.4
February122.0
March155.3
April163.2
May166.6
June168.0
July168.2
August161.0
September143.9
October146.7
November113.0
December115.9
Year1,747

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 33.87, -101.6 (Petersburg, population 971). Weather: typical-year data from station 573863, 2.9 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.