Spring Branch, TXLocal --:--Sun now --Daylight today --
Sun on a roof in Spring Branch.
The PVWatts model puts a generic roof array in Spring Branch at 1,492 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 Spring Branch climbs and falls, and the modeled output follows it.
kWh per kW DC, modeled by PVWatts. Best month 150, weakest 96: a ratio of 1.57.
How Spring Branch comparesderived from the figures above
Where Spring Branch sits.
Spring Branch ranks 807th of 1220 Texas places modeled here, at the 34th percentile. Its 1,492 kWh per kW is below the Texas median of 1,515. The strongest months are July, June, August and the weakest are November, December, February; output peaks in July and bottoms out in November. In all, 29.2% of the year arrives in June, July and August, less than the 29.3% of the median place.
Closest modeled neighbors
- Bulverde, 12 km south: 1,484 kWh per kW, 8 less than Spring Branch.
- Blanco, 24 km north: 1,536 kWh per kW, 44 more than Spring Branch.
- Fair Oaks Ranch, 26 km southwest: 1,498 kWh per kW, 6 more than Spring Branch.
- Garden Ridge, 29 km southeast: 1,502 kWh per kW, 10 more than Spring Branch.
- Hollywood Park, 32 km south: 1,502 kWh per kW, 10 more than Spring Branch.
- Wimberley, 33 km east: 1,484 kWh per kW, 8 less than Spring Branch.
- Boerne, 33 km west: 1,529 kWh per kW, 37 more than Spring Branch.
- Woodcreek, 33 km northeast: 1,506 kWh per kW, 14 more than Spring Branch.
- Selma, 33 km south: 1,524 kWh per kW, 32 more than Spring Branch.
Against San Antonio
The nearest of the six largest modeled places is San Antonio, 48 km to the south, at 1,505 kWh per kW. Spring Branch models 13 kWh per kW (0.9%) below 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, 79 km northeast, where the same model gives 1,483 kWh per kW, so Spring Branch runs 9 above that figure. Against the Texas median place month by month, Spring Branch runs at least 2% higher in January, March, October. It runs at least 2% lower in February, May, June, August, September, November.
Electricity in Comal CountyEIA-861
Electricity prices nearby
Providers listed in the county
- City of San Antonio: 12.4¢ per kWh, a bundled average, 888,946 residential customers across 8 counties.
- Pedernales Electric Coop, Inc: 12.75¢ per kWh, a bundled average, 420,753 residential customers across 24 counties.
- Guadalupe Valley Elec Coop Inc: 11.83¢ per kWh, a bundled average, 95,358 residential customers across 13 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 1,492 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 Spring Branch 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 $230 per kW a year as plain multiplication.
PVWatts v8station 659154
Month by month, per kW.
| Month | kWh per kW |
|---|---|
| January | 105.6 |
| February | 96.6 |
| March | 129.0 |
| April | 134.9 |
| May | 139.6 |
| June | 142.8 |
| July | 150.0 |
| August | 142.3 |
| September | 130.2 |
| October | 128.7 |
| November | 95.7 |
| December | 96.2 |
| Year | 1,492 |
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 29.88, -98.41 (Spring Branch, population 254). Weather: typical-year data from station 659154, 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.