Lago Vista, TXLocal --:--Sun now --Daylight today --
Sun on a roof in Lago Vista.
The PVWatts model puts a generic roof array in Lago Vista at 1,498 kWh a year for each kW of panels, using typical-year weather from a station 1.0 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 Lago Vista climbs and falls, and the modeled output follows it.
kWh per kW DC, modeled by PVWatts. Best month 151, weakest 94: a ratio of 1.61.
How Lago Vista comparesderived from the figures above
Where Lago Vista sits.
Lago Vista ranks 761st of 1220 Texas places modeled here, at the 38th percentile. Its 1,498 kWh per kW is below the Texas median of 1,515. The strongest months are July, June, August and the weakest are February, December, January; output peaks in July and bottoms out in February. In all, 29.5% of the year arrives in June, July and August, more than the 29.3% of the median place.
Closest modeled neighbors
- Briarcliff, 7 km southwest: 1,498 kWh per kW, 0 the same as Lago Vista.
- Jonestown, 7 km northeast: 1,492 kWh per kW, 6 less than Lago Vista.
- Volente, 8 km east: 1,501 kWh per kW, 3 more than Lago Vista.
- Point Venture, 8 km south: 1,500 kWh per kW, 2 more than Lago Vista.
- Lakeway, 11 km south: 1,500 kWh per kW, 2 more than Lago Vista.
- Bee Cave, 16 km south: 1,485 kWh per kW, 13 less than Lago Vista.
- Cedar Park, 18 km east: 1,521 kWh per kW, 23 more than Lago Vista.
- Leander, 18 km northeast: 1,532 kWh per kW, 34 more than Lago Vista.
- Double Horn, 23 km west: 1,517 kWh per kW, 19 more than Lago Vista.
Against Austin
The nearest of the six largest modeled places is Austin, 28 km to the southeast, at 1,483 kWh per kW. Lago Vista models 15 kWh per kW (1.0%) above it. At 0.15 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 (1.0 km and 1.5 km), so station distance does little to explain the gap, and the weather record does the rest.
The second-nearest large place is San Antonio, 121 km southwest, where the same model gives 1,505 kWh per kW, so Lago Vista runs 7 below that figure. Against the Texas median place month by month, Lago Vista runs at least 2% higher in October. It runs at least 2% lower in February, March, August.
Electricity in Travis CountyEIA-861
Electricity prices nearby
EIA lists Oncor Electric Delivery in this county. Where Lago Vista is on Oncor Electric Delivery's lines, homes buy energy from a retail electricity provider and the price depends on the plan. Parts of Lago Vista 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 1,498 kWh at $229 per kW a year, plain multiplication and not a savings estimate or an offer.
Also listed in the county
- Austin Energy: 13.14¢ per kWh, a bundled average, 522,446 residential customers across 2 counties.
- Pedernales Electric Coop, Inc: 12.75¢ per kWh, a bundled average, 420,753 residential customers across 24 counties.
- Bluebonnet Electric Coop, Inc: 11.59¢ per kWh, a bundled average, 119,030 residential customers across 14 counties.
- Oncor Electric Delivery Company LLC: 5.64¢ per kWh, delivery charges only, before the retail energy price, 3,545,814 residential customers across 99 counties.
These utilities serve other parts of the county, which can include parts of Lago Vista. 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 Lago Vista 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 $231 per kW a year as plain multiplication.
PVWatts v8station 671004
Month by month, per kW.
| Month | kWh per kW |
|---|---|
| January | 103.4 |
| February | 93.6 |
| March | 118.4 |
| April | 138.2 |
| May | 141.0 |
| June | 145.4 |
| July | 151.0 |
| August | 145.2 |
| September | 130.5 |
| October | 128.1 |
| November | 106.0 |
| December | 97.4 |
| Year | 1,498 |
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 30.45, -97.99 (Lago Vista, population 10,201). Weather: typical-year data from station 671004, 1.0 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.