Newcastle, TXLocal --:--Sun now --Daylight today --
Sun on a roof in Newcastle.
The PVWatts model puts a generic roof array in Newcastle at 1,598 kWh a year for each kW of panels, using typical-year weather from a station 1.1 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 Newcastle climbs and falls, and the modeled output follows it.
kWh per kW DC, modeled by PVWatts. Best month 158, weakest 102: a ratio of 1.56.
How Newcastle comparesderived from the figures above
Where Newcastle sits.
Newcastle ranks 231st of 1220 Texas places modeled here, at the 81st percentile. Its 1,598 kWh per kW is above the Texas median of 1,515. The strongest months are July, June, May and the weakest are December, February, January; output peaks in July and bottoms out in December. In all, 28.8% of the year arrives in June, July and August, less than the 29.3% of the median place.
Closest modeled neighbors
- Olney, 18 km north: 1,595 kWh per kW, 3 less than Newcastle.
- Graham, 19 km southeast: 1,555 kWh per kW, 43 less than Newcastle.
- Bryson, 33 km east: 1,566 kWh per kW, 32 less than Newcastle.
- Megargel, 33 km northwest: 1,625 kWh per kW, 27 more than Newcastle.
- Woodson, 36 km southwest: 1,610 kWh per kW, 12 more than Newcastle.
- Throckmorton, 41 km west: 1,618 kWh per kW, 20 more than Newcastle.
- Archer City, 45 km north: 1,572 kWh per kW, 26 less than Newcastle.
- Windthorst, 51 km northeast: 1,586 kWh per kW, 12 less than Newcastle.
- Breckenridge, 51 km south: 1,606 kWh per kW, 8 more than Newcastle.
Against Fort Worth
The nearest of the six largest modeled places is Fort Worth, 138 km to the east, at 1,535 kWh per kW. Newcastle models 63 kWh per kW (4.1%) above it. Newcastle lies 0.42 degrees of latitude north of Fort Worth, 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 (1.1 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 Dallas, 189 km east, where the same model gives 1,500 kWh per kW, so Newcastle runs 98 above that figure. Against the Texas median place month by month, Newcastle runs at least 2% higher in January, February, March, April, May, June, July, September, November, December.
Electricity in Young CountyEIA-861
Electricity prices nearby
EIA lists Oncor Electric Delivery and Texas-New Mexico Power in this county. Where Newcastle 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 Newcastle 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 1,598 kWh at $245 per kW a year, plain multiplication and not a savings estimate or an offer.
Also listed in the county
- 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 Newcastle. 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 Newcastle 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 $246 per kW a year as plain multiplication.
PVWatts v8station 650723
Month by month, per kW.
| Month | kWh per kW |
|---|---|
| January | 111.5 |
| February | 108.7 |
| March | 138.9 |
| April | 149.8 |
| May | 150.3 |
| June | 151.0 |
| July | 158.4 |
| August | 150.3 |
| September | 136.7 |
| October | 127.8 |
| November | 113.4 |
| December | 101.6 |
| Year | 1,598 |
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 33.2, -98.74 (Newcastle, population 539). Weather: typical-year data from station 650723, 1.1 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.