Round Mountain, TXLocal --:--Sun now --Daylight today --
Sun on a roof in Round Mountain.
The PVWatts model puts a generic roof array in Round Mountain at 1,553 kWh a year for each kW of panels, using typical-year weather from a station 2.9 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 Round Mountain climbs and falls, and the modeled output follows it.
kWh per kW DC, modeled by PVWatts. Best month 153, weakest 100: a ratio of 1.53.
How Round Mountain comparesderived from the figures above
Where Round Mountain sits.
Round Mountain ranks 336th of 1220 Texas places modeled here, at the 73rd percentile. Its 1,553 kWh per kW is above the Texas median of 1,515. The strongest months are August, July, June and the weakest are December, February, January; output peaks in August and bottoms out in December. In all, 29.1% of the year arrives in June, July and August, less than the 29.3% of the median place.
Closest modeled neighbors
- Johnson City, 14 km south: 1,530 kWh per kW, 23 less than Round Mountain.
- Horseshoe Bay, 17 km north: 1,546 kWh per kW, 7 less than Round Mountain.
- Double Horn, 18 km northeast: 1,517 kWh per kW, 36 less than Round Mountain.
- Cottonwood Shores, 19 km north: 1,527 kWh per kW, 26 less than Round Mountain.
- Meadowlakes, 20 km north: 1,533 kWh per kW, 20 less than Round Mountain.
- Marble Falls, 20 km north: 1,507 kWh per kW, 46 less than Round Mountain.
- Granite Shoals, 22 km north: 1,524 kWh per kW, 29 less than Round Mountain.
- Sunrise Beach Village, 23 km north: 1,526 kWh per kW, 27 less than Round Mountain.
- Highland Haven, 25 km north: 1,524 kWh per kW, 29 less than Round Mountain.
Against Austin
The nearest of the six largest modeled places is Austin, 59 km to the east, at 1,483 kWh per kW. Round Mountain models 70 kWh per kW (4.7%) above it. At 0.09 degrees of latitude apart, the two sit at almost the same sun angle, so geometry explains little. The weather station for Round Mountain is 2.9 km from the modeled point, against 1.5 km for Austin, so part of the gap can come from which station's typical year was used.
The second-nearest large place is San Antonio, 105 km south, where the same model gives 1,505 kWh per kW, so Round Mountain runs 48 above that figure. Against the Texas median place month by month, Round Mountain runs at least 2% higher in January, February, March, April, August, September, November, December.
Electricity in Blanco CountyEIA-861
Electricity prices nearby
Providers listed in the county
- Pedernales Electric Coop, Inc: 12.75¢ per kWh, a bundled average, 420,753 residential customers across 24 counties.
- Central Texas Elec Coop, Inc: 12.17¢ per kWh, a bundled average, 40,305 residential customers across 11 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 1,553 kWh would come to $198 per kW a year, plain multiplication and not a savings estimate.
Modeled estimateruns in your browser
Size the array, see the kWh.
Scale the Round Mountain 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 $239 per kW a year as plain multiplication.
PVWatts v8station 661562
Month by month, per kW.
| Month | kWh per kW |
|---|---|
| January | 107.9 |
| February | 102.8 |
| March | 133.5 |
| April | 138.8 |
| May | 143.2 |
| June | 147.2 |
| July | 152.0 |
| August | 153.0 |
| September | 136.8 |
| October | 125.9 |
| November | 111.7 |
| December | 100.1 |
| Year | 1,553 |
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 30.39, -98.36 (Round Mountain, population 118). Weather: typical-year data from station 661562, 2.9 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.