St. Hedwig, TXLocal --:--Sun now --Daylight today --
Sun on a roof in St. Hedwig.
The PVWatts model puts a generic roof array in St. Hedwig at 1,488 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 St. Hedwig climbs and falls, and the modeled output follows it.
kWh per kW DC, modeled by PVWatts. Best month 150, weakest 95: a ratio of 1.58.
How St. Hedwig comparesderived from the figures above
Where St. Hedwig sits.
St. Hedwig ranks 835th of 1220 Texas places modeled here, at the 32nd percentile. Its 1,488 kWh per kW is below the Texas median of 1,515. The strongest months are August, July, June and the weakest are February, December, January; output peaks in August and bottoms out in February. 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
- La Vernia, 11 km southeast: 1,517 kWh per kW, 29 more than St. Hedwig.
- New Berlin, 12 km northeast: 1,499 kWh per kW, 11 more than St. Hedwig.
- Converse, 13 km northwest: 1,511 kWh per kW, 23 more than St. Hedwig.
- China Grove, 14 km west: 1,526 kWh per kW, 38 more than St. Hedwig.
- Schertz, 16 km north: 1,502 kWh per kW, 14 more than St. Hedwig.
- Cibolo, 17 km north: 1,496 kWh per kW, 8 more than St. Hedwig.
- Universal City, 17 km northwest: 1,516 kWh per kW, 28 more than St. Hedwig.
- Kirby, 18 km west: 1,495 kWh per kW, 7 more than St. Hedwig.
- Marion, 18 km north: 1,496 kWh per kW, 8 more than St. Hedwig.
Against San Antonio
The nearest of the six largest modeled places is San Antonio, 30 km to the west, at 1,505 kWh per kW. St. Hedwig models 17 kWh per kW (1.1%) below it. At 0.04 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 2.2 km), so station distance does little to explain the gap, and the weather record does the rest.
The second-nearest large place is Austin, 107 km northeast, where the same model gives 1,483 kWh per kW, so St. Hedwig runs 5 above that figure. Against the Texas median place month by month, St. Hedwig runs at least 2% higher in October, November. It runs at least 2% lower in February, April, May, June, July, September.
Electricity in Bexar 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 1,488 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 St. Hedwig 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 $229 per kW a year as plain multiplication.
PVWatts v8station 665083
Month by month, per kW.
| Month | kWh per kW |
|---|---|
| January | 100.6 |
| February | 94.9 |
| March | 123.2 |
| April | 130.0 |
| May | 138.3 |
| June | 138.8 |
| July | 147.3 |
| August | 150.3 |
| September | 128.3 |
| October | 131.0 |
| November | 109.6 |
| December | 95.7 |
| Year | 1,488 |
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 29.42, -98.21 (St. Hedwig, population 2,377). Weather: typical-year data from station 665083, 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.