Harker Heights, TXLocal --:--Sun now --Daylight today --
Sun on a roof in Harker Heights.
The PVWatts model puts a generic roof array in Harker Heights at 1,518 kWh a year for each kW of panels, using typical-year weather from a station 2.2 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 Harker Heights climbs and falls, and the modeled output follows it.
kWh per kW DC, modeled by PVWatts. Best month 154, weakest 94: a ratio of 1.63.
How Harker Heights comparesderived from the figures above
Where Harker Heights sits.
Harker Heights ranks 78th of 157 Texas places modeled here, at the 51st percentile. Its 1,518 kWh per kW is level with the Texas median of 1,518. 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, 29.4% of the year arrives in June, July and August, about the same than the 29.4% of the median place.
Closest modeled neighbors
- Killeen, 9 km west: 1,530 kWh per kW, 12 more than Harker Heights.
- Belton, 15 km east: 1,519 kWh per kW, 1 more than Harker Heights.
- Temple, 24 km east: 1,505 kWh per kW, 13 less than Harker Heights.
- Copperas Cove, 27 km west: 1,539 kWh per kW, 21 more than Harker Heights.
- Georgetown, 44 km south: 1,518 kWh per kW, 0 the same as Harker Heights.
- Leander, 58 km south: 1,532 kWh per kW, 14 more than Harker Heights.
- Hutto, 59 km south: 1,528 kWh per kW, 10 more than Harker Heights.
- Round Rock, 59 km south: 1,522 kWh per kW, 4 more than Harker Heights.
- Cedar Park, 64 km south: 1,521 kWh per kW, 3 more than Harker Heights.
Against Austin
The nearest of the six largest modeled places is Austin, 85 km to the south, at 1,483 kWh per kW. Harker Heights models 35 kWh per kW (2.4%) above it. Harker Heights lies 0.76 degrees of latitude north of Austin, which on sun angle alone would point the other way, so clouds, haze and the weather station's record carry the difference. The two weather stations sit a similar distance from their points (2.2 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 Fort Worth, 193 km north, where the same model gives 1,535 kWh per kW, so Harker Heights runs 17 below that figure. Against the Texas median place month by month, Harker Heights runs at least 2% higher in March, April, August. It runs at least 2% lower in July, December.
Electricity in Bell CountyEIA-861
Electricity prices nearby
EIA lists Oncor Electric Delivery in this county. Where Harker Heights is on Oncor Electric Delivery's lines, homes buy energy from a retail electricity provider and the price depends on the plan. Parts of Harker Heights 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 1,518 kWh at $233 per kW a year, plain multiplication and not a savings estimate or an offer.
Also listed in the county
- Pedernales Electric Coop, Inc: 12.75¢ per kWh, a bundled average, 420,753 residential customers across 24 counties.
- Heart of Texas Electric Coop: 11.89¢ per kWh, a bundled average, 18,476 residential customers across 7 counties.
- Bartlett Electric Coop, Inc: 15.23¢ per kWh, a bundled average, 12,402 residential customers across 5 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 Harker Heights. 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 Harker Heights 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 $235 per kW a year as plain multiplication.
PVWatts v8station 680787
Month by month, per kW.
| Month | kWh per kW |
|---|---|
| January | 101.6 |
| February | 100.0 |
| March | 129.6 |
| April | 140.5 |
| May | 139.9 |
| June | 145.0 |
| July | 147.4 |
| August | 153.7 |
| September | 133.5 |
| October | 125.4 |
| November | 106.9 |
| December | 94.3 |
| Year | 1,518 |
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 31.06, -97.64 (Harker Heights, population 35,263). Weather: typical-year data from station 680787, 2.2 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.