Santa Rosa, TXLocal --:--Sun now --Daylight today --
Sun on a roof in Santa Rosa.
The PVWatts model puts a generic roof array in Santa Rosa at 1,528 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 Santa Rosa climbs and falls, and the modeled output follows it.
kWh per kW DC, modeled by PVWatts. Best month 153, weakest 102: a ratio of 1.5.
How Santa Rosa comparesderived from the figures above
Where Santa Rosa sits.
Santa Rosa ranks 488th of 1220 Texas places modeled here, at the 60th percentile. Its 1,528 kWh per kW is above the Texas median of 1,515. The strongest months are July, May, August and the weakest are December, January, November; output peaks in July and bottoms out in December. In all, 28.9% of the year arrives in June, July and August, less than the 29.3% of the median place.
Closest modeled neighbors
- Primera, 9 km southeast: 1,549 kWh per kW, 21 more than Santa Rosa.
- Combes, 10 km east: 1,578 kWh per kW, 50 more than Santa Rosa.
- Palm Valley, 10 km southeast: 1,549 kWh per kW, 21 more than Santa Rosa.
- La Villa, 11 km northwest: 1,514 kWh per kW, 14 less than Santa Rosa.
- La Feria, 11 km south: 1,528 kWh per kW, 0 the same as Santa Rosa.
- Edcouch, 13 km west: 1,514 kWh per kW, 14 less than Santa Rosa.
- Mercedes, 15 km southwest: 1,533 kWh per kW, 5 more than Santa Rosa.
- Harlingen, 15 km southeast: 1,530 kWh per kW, 2 more than Santa Rosa.
- Elsa, 17 km west: 1,529 kWh per kW, 1 more than Santa Rosa.
Against San Antonio
The nearest of the six largest modeled places is San Antonio, 362 km to the north, at 1,505 kWh per kW. Santa Rosa models 23 kWh per kW (1.5%) above it. Santa Rosa lies 3.2 degrees of latitude south of San Antonio, and the sun stands higher in the sky the further south you go, which matches its higher modeled output. The two weather stations sit a similar distance from their points (1.5 km and 2.2 km), so station distance does little to explain the gap, and the weather record does the rest.
The second-nearest large place is Austin, 449 km north, where the same model gives 1,483 kWh per kW, so Santa Rosa runs 45 above that figure. Against the Texas median place month by month, Santa Rosa runs at least 2% higher in January, February, March, May, December. It runs at least 2% lower in April, August, October.
Electricity in Cameron CountyEIA-861
Electricity prices nearby
EIA lists AEP Texas Central in this county. Where Santa Rosa is on AEP Texas Central's lines, homes buy energy from a retail electricity provider and the price depends on the plan. Parts of Santa Rosa 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 1,528 kWh at $234 per kW a year, plain multiplication and not a savings estimate or an offer.
Also listed in the county
- Magic Valley Electric Coop Inc: 10.51¢ per kWh, a bundled average, 129,596 residential customers across 6 counties.
- Brownsville Public Utilities Board: 11.22¢ per kWh, a bundled average, 48,500 residential customers across 1 county.
- 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 Santa Rosa. 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 Santa Rosa 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 $235 per kW a year as plain multiplication.
PVWatts v8station 675581
Month by month, per kW.
| Month | kWh per kW |
|---|---|
| January | 105.3 |
| February | 110.8 |
| March | 134.2 |
| April | 124.4 |
| May | 148.9 |
| June | 143.2 |
| July | 152.6 |
| August | 144.9 |
| September | 133.2 |
| October | 122.5 |
| November | 105.6 |
| December | 101.9 |
| Year | 1,528 |
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 26.26, -97.83 (Santa Rosa, population 2,366). Weather: typical-year data from station 675581, 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.