Alto, TXLocal --:--Sun now --Daylight today --
Sun on a roof in Alto.
The PVWatts model puts a generic roof array in Alto at 1,390 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 Alto climbs and falls, and the modeled output follows it.
kWh per kW DC, modeled by PVWatts. Best month 138, weakest 81: a ratio of 1.72.
How Alto comparesderived from the figures above
Where Alto sits.
Alto ranks 1171st of 1220 Texas places modeled here, at the 4th percentile. Its 1,390 kWh per kW is below the Texas median of 1,515. The strongest months are July, August, May and the weakest are February, December, January; output peaks in July and bottoms out in February. In all, 29.5% of the year arrives in June, July and August, more than the 29.3% of the median place.
Closest modeled neighbors
- Rusk, 18 km northwest: 1,434 kWh per kW, 44 more than Alto.
- Wells, 21 km southeast: 1,382 kWh per kW, 8 less than Alto.
- Reklaw, 26 km north: 1,440 kWh per kW, 50 more than Alto.
- Cushing, 28 km northeast: 1,434 kWh per kW, 44 more than Alto.
- Gallatin, 29 km north: 1,432 kWh per kW, 42 more than Alto.
- Kennard, 34 km south: 1,382 kWh per kW, 8 less than Alto.
- New Summerfield, 37 km north: 1,465 kWh per kW, 75 more than Alto.
- Jacksonville, 39 km northwest: 1,448 kWh per kW, 58 more than Alto.
- Nacogdoches, 40 km east: 1,401 kWh per kW, 11 more than Alto.
Against Dallas
The nearest of the six largest modeled places is Dallas, 204 km to the northwest, at 1,500 kWh per kW. Alto models 110 kWh per kW (7.3%) below it. Alto lies 1.14 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 weather station for Alto 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 Houston, 209 km south, where the same model gives 1,422 kWh per kW, so Alto runs 32 below that figure. It runs at least 2% lower in January, February, March, April, May, June, July, August, September, October, November, December.
Electricity in Cherokee CountyEIA-861
Electricity prices nearby
EIA lists Oncor Electric Delivery in this county. Where Alto is on Oncor Electric Delivery's lines, homes buy energy from a retail electricity provider and the price depends on the plan. Parts of Alto 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 1,390 kWh at $213 per kW a year, plain multiplication and not a savings estimate or an offer.
Also listed in the county
- Cherokee County Elec Coop Assn: 14.76¢ per kWh, a bundled average, 22,613 residential customers across 4 counties.
- Houston County Elec Coop Inc: 15.28¢ per kWh, a bundled average, 21,761 residential customers across 9 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 Alto. 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 Alto 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 $214 per kW a year as plain multiplication.
PVWatts v8station 740674
Month by month, per kW.
| Month | kWh per kW |
|---|---|
| January | 93.0 |
| February | 80.6 |
| March | 117.3 |
| April | 129.7 |
| May | 136.3 |
| June | 134.7 |
| July | 138.5 |
| August | 137.1 |
| September | 119.5 |
| October | 116.8 |
| November | 95.1 |
| December | 91.7 |
| Year | 1,390 |
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 31.65, -95.07 (Alto, population 1,064). Weather: typical-year data from station 740674, 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.
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.
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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.