Jasper, TXLocal --:--Sun now --Daylight today --
Sun on a roof in Jasper.
The PVWatts model puts a generic roof array in Jasper at 1,331 kWh a year for each kW of panels, using typical-year weather from a station 1.5 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 Jasper climbs and falls, and the modeled output follows it.
kWh per kW DC, modeled by PVWatts. Best month 134, weakest 75: a ratio of 1.79.
How Jasper comparesderived from the figures above
Where Jasper sits.
Jasper ranks 1218th of 1220 Texas places modeled here, at the 0th percentile. Its 1,331 kWh per kW is below the Texas median of 1,515. The strongest months are May, August, July and the weakest are December, February, January; output peaks in May and bottoms out in December. In all, 28.8% of the year arrives in June, July and August, less than the 29.3% of the median place.
Closest modeled neighbors
- Browndell, 23 km north: 1,369 kWh per kW, 38 more than Jasper.
- Newton, 24 km east: 1,345 kWh per kW, 14 more than Jasper.
- Kirbyville, 30 km south: 1,369 kWh per kW, 38 more than Jasper.
- Pineland, 37 km north: 1,362 kWh per kW, 31 more than Jasper.
- Colmesneil, 41 km west: 1,358 kWh per kW, 27 more than Jasper.
- Woodville, 44 km west: 1,364 kWh per kW, 33 more than Jasper.
- Ivanhoe, 48 km southwest: 1,341 kWh per kW, 10 more than Jasper.
- Hemphill, 49 km north: 1,372 kWh per kW, 41 more than Jasper.
- Zavalla, 49 km northwest: 1,357 kWh per kW, 26 more than Jasper.
Against Houston
The nearest of the six largest modeled places is Houston, 184 km to the southwest, at 1,422 kWh per kW. Jasper models 91 kWh per kW (6.4%) below it. Jasper lies 1.13 degrees of latitude north of Houston, and the sun stands higher in the sky the further south you go, which matches its lower modeled output. The two weather stations sit a similar distance from their points (1.5 km and 2.4 km), so station distance does little to explain the gap, and the weather record does the rest.
The second-nearest large place is Dallas, 335 km northwest, where the same model gives 1,500 kWh per kW, so Jasper runs 169 below that figure. It runs at least 2% lower in January, February, March, April, May, June, July, August, September, October, November, December.
Electricity in Jasper CountyEIA-861
Electricity prices nearby
Providers listed in the county
- Entergy Texas Inc.: 13.89¢ per kWh, a bundled average, 469,094 residential customers across 27 counties.
- Sam Houston Electric Coop Inc: 14.18¢ per kWh, a bundled average, 88,424 residential customers across 10 counties.
- Deep East Texas Elec Coop Inc: 14.05¢ per kWh, a bundled average, 40,593 residential customers across 8 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 1,331 kWh would come to $185 per kW a year, plain multiplication and not a savings estimate.
Modeled estimateruns in your browser
Size the array, see the kWh.
Scale the Jasper 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 $205 per kW a year as plain multiplication.
PVWatts v8station 763051
Month by month, per kW.
| Month | kWh per kW |
|---|---|
| January | 87.6 |
| February | 86.5 |
| March | 111.6 |
| April | 122.9 |
| May | 134.0 |
| June | 122.6 |
| July | 130.1 |
| August | 130.8 |
| September | 120.0 |
| October | 111.8 |
| November | 98.3 |
| December | 75.0 |
| Year | 1,331 |
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 30.92, -93.99 (Jasper, population 7,505). Weather: typical-year data from station 763051, 1.5 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.