Ralls, TXLocal --:--Sun now --Daylight today --
Sun on a roof in Ralls.
The PVWatts model puts a generic roof array in Ralls at 1,738 kWh a year for each kW of panels, using typical-year weather from a station 1.1 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 Ralls climbs and falls, and the modeled output follows it.
kWh per kW DC, modeled by PVWatts. Best month 170, weakest 115: a ratio of 1.47.
How Ralls comparesderived from the figures above
Where Ralls sits.
Ralls ranks 71st of 1220 Texas places modeled here, at the 94th percentile. Its 1,738 kWh per kW is above the Texas median of 1,515. The strongest months are May, June, April and the weakest are December, November, January; output peaks in May and bottoms out in December. In all, 27.9% of the year arrives in June, July and August, less than the 29.3% of the median place.
Closest modeled neighbors
- Crosbyton, 14 km east: 1,740 kWh per kW, 2 more than Ralls.
- Lorenzo, 15 km west: 1,718 kWh per kW, 20 less than Ralls.
- Idalou, 28 km west: 1,720 kWh per kW, 18 less than Ralls.
- Petersburg, 29 km northwest: 1,747 kWh per kW, 9 more than Ralls.
- Ransom Canyon, 33 km southwest: 1,759 kWh per kW, 21 more than Ralls.
- Floydada, 34 km north: 1,721 kWh per kW, 17 less than Ralls.
- Buffalo Springs Lake, 34 km southwest: 1,759 kWh per kW, 21 more than Ralls.
- Slaton, 36 km southwest: 1,742 kWh per kW, 4 more than Ralls.
- New Deal, 43 km west: 1,760 kWh per kW, 22 more than Ralls.
Against Fort Worth
The nearest of the six largest modeled places is Fort Worth, 388 km to the east, at 1,535 kWh per kW. Ralls models 203 kWh per kW (13.2%) above it. Ralls lies 0.9 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 two weather stations sit a similar distance from their points (1.1 km and 1.5 km), so station distance does little to explain the gap, and the weather record does the rest.
The second-nearest large place is Dallas, 440 km east, where the same model gives 1,500 kWh per kW, so Ralls runs 238 above that figure. Against the Texas median place month by month, Ralls runs at least 2% higher in January, February, March, April, May, June, July, August, September, October, November, December.
Electricity in Crosby CountyEIA-861
Electricity prices nearby
Providers listed in the county
- Southwestern Public Service Co: 13.94¢ per kWh, a bundled average, 223,685 residential customers across 45 counties.
- South Plains Electric Coop Inc: 11.02¢ per kWh, a bundled average, 58,726 residential customers across 18 counties.
- Lighthouse Electric Coop, Inc: 16.18¢ per kWh, a bundled average, 3,880 residential customers across 12 counties.
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 1,738 kWh would come to $242 per kW a year, plain multiplication and not a savings estimate.
Modeled estimateruns in your browser
Size the array, see the kWh.
Scale the Ralls 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 $268 per kW a year as plain multiplication.
PVWatts v8station 579290
Month by month, per kW.
| Month | kWh per kW |
|---|---|
| January | 125.0 |
| February | 125.5 |
| March | 150.7 |
| April | 166.3 |
| May | 169.5 |
| June | 166.8 |
| July | 158.6 |
| August | 160.3 |
| September | 143.7 |
| October | 138.4 |
| November | 117.9 |
| December | 115.3 |
| Year | 1,738 |
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 33.68, -101.38 (Ralls, population 1,613). Weather: typical-year data from station 579290, 1.1 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.
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.