Jefferson, TXLocal --:--Sun now --Daylight today --
Sun on a roof in Jefferson.
The PVWatts model puts a generic roof array in Jefferson at 1,391 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 Jefferson climbs and falls, and the modeled output follows it.
kWh per kW DC, modeled by PVWatts. Best month 140, weakest 83: a ratio of 1.7.
How Jefferson comparesderived from the figures above
Where Jefferson sits.
Jefferson ranks 1170th of 1220 Texas places modeled here, at the 4th percentile. Its 1,391 kWh per kW is below the Texas median of 1,515. The strongest months are July, June, August and the weakest are December, February, November; output peaks in July and bottoms out in December. In all, 30.1% of the year arrives in June, July and August, more than the 29.3% of the median place.
Closest modeled neighbors
- Uncertain, 22 km east: 1,380 kWh per kW, 11 less than Jefferson.
- Avinger, 24 km northwest: 1,400 kWh per kW, 9 more than Jefferson.
- Marshall, 24 km south: 1,385 kWh per kW, 6 less than Jefferson.
- Scottsville, 27 km southeast: 1,385 kWh per kW, 6 less than Jefferson.
- Linden, 28 km north: 1,411 kWh per kW, 20 more than Jefferson.
- Ore City, 35 km west: 1,446 kWh per kW, 55 more than Jefferson.
- Hallsville, 36 km southwest: 1,389 kWh per kW, 2 less than Jefferson.
- Hughes Springs, 37 km northwest: 1,418 kWh per kW, 27 more than Jefferson.
- Lone Star, 39 km northwest: 1,447 kWh per kW, 56 more than Jefferson.
Against Dallas
The nearest of the six largest modeled places is Dallas, 226 km to the west, at 1,500 kWh per kW. Jefferson models 109 kWh per kW (7.3%) below it. At 0.03 degrees of latitude apart, the two sit at almost the same sun angle, so geometry explains little. 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 Fort Worth, 280 km west, where the same model gives 1,535 kWh per kW, so Jefferson runs 144 below that figure. It runs at least 2% lower in January, February, March, April, May, June, July, August, September, October, November, December.
Electricity in Marion CountyEIA-861
Electricity prices nearby
Providers listed in the county
- Southwestern Electric Power Co: 12.6¢ per kWh, a bundled average, 157,119 residential customers across 25 counties.
- Upshur Rural Elec Coop Corp: 12.71¢ per kWh, a bundled average, 44,971 residential customers across 10 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 1,391 kWh would come to $175 per kW a year, plain multiplication and not a savings estimate.
Modeled estimateruns in your browser
Size the array, see the kWh.
Scale the Jefferson 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 756047
Month by month, per kW.
| Month | kWh per kW |
|---|---|
| January | 95.6 |
| February | 89.3 |
| March | 111.2 |
| April | 128.7 |
| May | 137.2 |
| June | 139.5 |
| July | 140.4 |
| August | 139.0 |
| September | 119.8 |
| October | 113.6 |
| November | 94.1 |
| December | 82.6 |
| Year | 1,391 |
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 32.76, -94.35 (Jefferson, population 1,996). Weather: typical-year data from station 756047, 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.