Mathis, TXLocal --:--Sun now --Daylight today --
Sun on a roof in Mathis.
The PVWatts model puts a generic roof array in Mathis at 1,509 kWh a year for each kW of panels, using typical-year weather from a station 0.0 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 Mathis climbs and falls, and the modeled output follows it.
kWh per kW DC, modeled by PVWatts. Best month 150, weakest 100: a ratio of 1.51.
How Mathis comparesderived from the figures above
Where Mathis sits.
Mathis ranks 664th of 1220 Texas places modeled here, at the 46th percentile. Its 1,509 kWh per kW is below the Texas median of 1,515. The strongest months are July, August, May and the weakest are January, December, February; output peaks in July and bottoms out in January. In all, 29.3% of the year arrives in June, July and August, about the same than the 29.3% of the median place.
Closest modeled neighbors
- Lake City, 6 km west: 1,499 kWh per kW, 10 less than Mathis.
- San Patricio, 13 km south: 1,497 kWh per kW, 12 less than Mathis.
- Orange Grove, 19 km southwest: 1,496 kWh per kW, 13 less than Mathis.
- Odem, 27 km southeast: 1,511 kWh per kW, 2 more than Mathis.
- Sinton, 32 km east: 1,517 kWh per kW, 8 more than Mathis.
- Agua Dulce, 36 km south: 1,522 kWh per kW, 13 more than Mathis.
- Beeville, 36 km north: 1,513 kWh per kW, 4 more than Mathis.
- Robstown, 36 km southeast: 1,551 kWh per kW, 42 more than Mathis.
- George West, 40 km northwest: 1,505 kWh per kW, 4 less than Mathis.
Against San Antonio
The nearest of the six largest modeled places is San Antonio, 167 km to the northwest, at 1,505 kWh per kW. Mathis models 4 kWh per kW (0.3%) above it. The two figures are within 1 percent, which is about the size of the difference you get from two neighboring weather stations alone, so this page's result is effectively the same as San Antonio's.
The second-nearest large place is Austin, 246 km north, where the same model gives 1,483 kWh per kW, so Mathis runs 26 above that figure. Against the Texas median place month by month, Mathis runs at least 2% higher in February, March, May, December. It runs at least 2% lower in January, April, September, October.
Electricity in San Patricio CountyEIA-861
Electricity prices nearby
EIA lists AEP Texas Central in this county. Where Mathis is on AEP Texas Central's lines, homes buy energy from a retail electricity provider and the price depends on the plan. Parts of Mathis 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 1,509 kWh at $231 per kW a year, plain multiplication and not a savings estimate or an offer.
Also listed in the county
- San Patricio Electric Coop Inc: 14.16¢ per kWh, a bundled average, 10,087 residential customers across 9 counties.
- AEP Texas Central Company: 5.91¢ per kWh, delivery charges only, before the retail energy price, 793,896 residential customers across 44 counties.
These utilities serve other parts of the county, which can include parts of Mathis. 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 Mathis 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 $232 per kW a year as plain multiplication.
PVWatts v8station 675906
Month by month, per kW.
| Month | kWh per kW |
|---|---|
| January | 99.7 |
| February | 104.8 |
| March | 130.4 |
| April | 129.0 |
| May | 147.7 |
| June | 144.2 |
| July | 150.3 |
| August | 148.2 |
| September | 121.9 |
| October | 120.9 |
| November | 107.7 |
| December | 104.4 |
| Year | 1,509 |
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 28.09, -97.82 (Mathis, population 4,292). Weather: typical-year data from station 675906, 0.0 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.