Southlake, TXLocal --:--Sun now --Daylight today --
Sun on a roof in Southlake.
The PVWatts model puts a generic roof array in Southlake at 1,526 kWh a year for each kW of panels, using typical-year weather from a station 2.4 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 Southlake climbs and falls, and the modeled output follows it.
kWh per kW DC, modeled by PVWatts. Best month 159, weakest 90: a ratio of 1.77.
How Southlake comparesderived from the figures above
Where Southlake sits.
Southlake ranks 59th of 157 Texas places modeled here, at the 63rd percentile. Its 1,526 kWh per kW is above the Texas median of 1,518. The strongest months are July, August, June and the weakest are December, November, January; output peaks in July and bottoms out in December. In all, 30.4% of the year arrives in June, July and August, more than the 29.4% of the median place.
Closest modeled neighbors
- Colleyville, 7 km south: 1,551 kWh per kW, 25 more than Southlake.
- Keller, 7 km west: 1,558 kWh per kW, 32 more than Southlake.
- Grapevine, 7 km east: 1,568 kWh per kW, 42 more than Southlake.
- Flower Mound, 11 km north: 1,546 kWh per kW, 20 more than Southlake.
- Bedford, 11 km south: 1,542 kWh per kW, 16 more than Southlake.
- North Richland Hills, 12 km southwest: 1,565 kWh per kW, 39 more than Southlake.
- Hurst, 13 km south: 1,536 kWh per kW, 10 more than Southlake.
- Watauga, 13 km southwest: 1,558 kWh per kW, 32 more than Southlake.
- Euless, 13 km southeast: 1,556 kWh per kW, 30 more than Southlake.
Against Fort Worth
The nearest of the six largest modeled places is Fort Worth, 27 km to the southwest, at 1,535 kWh per kW. Southlake models 9 kWh per kW (0.6%) 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 Fort Worth's.
The second-nearest large place is Dallas, 40 km southeast, where the same model gives 1,500 kWh per kW, so Southlake runs 26 above that figure. Against the Texas median place month by month, Southlake runs at least 2% higher in February, May, June, July, August, September. It runs at least 2% lower in October, November, December.
Electricity in Tarrant County, Denton CountyEIA-861
Electricity prices nearby
EIA lists Oncor Electric Delivery and Texas-New Mexico Power in this county. Where Southlake is on Oncor Electric Delivery and Texas-New Mexico Power's lines, homes buy energy from a retail electricity provider and the price depends on the plan. Parts of Southlake 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 1,526 kWh at $234 per kW a year, plain multiplication and not a savings estimate or an offer.
Also listed in the county
- Denton County Elec Coop, Inc: 13.18¢ per kWh, a bundled average, 310,805 residential customers across 6 counties.
- Tri-County Electric Coop, Inc (TX): 15.07¢ per kWh, a bundled average, 117,857 residential customers across 16 counties.
- United Electric Coop Service Inc: 13.91¢ per kWh, a bundled average, 91,268 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 Southlake. 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 Southlake 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 15.47¢ per kWh. At that rate the modeled output is worth $236 per kW a year as plain multiplication.
PVWatts v8station 693740
Month by month, per kW.
| Month | kWh per kW |
|---|---|
| January | 100.6 |
| February | 104.5 |
| March | 126.5 |
| April | 135.8 |
| May | 147.7 |
| June | 150.7 |
| July | 158.7 |
| August | 154.8 |
| September | 141.1 |
| October | 121.1 |
| November | 94.9 |
| December | 89.5 |
| Year | 1,526 |
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 32.95, -97.15 (Southlake, population 31,500). Weather: typical-year data from station 693740, 2.4 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.