Princeton, TXLocal --:--Sun now --Daylight today --
Sun on a roof in Princeton.
The PVWatts model puts a generic roof array in Princeton at 1,523 kWh a year for each kW of panels, using typical-year weather from a station 1.4 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 Princeton climbs and falls, and the modeled output follows it.
kWh per kW DC, modeled by PVWatts. Best month 150, weakest 99: a ratio of 1.51.
How Princeton comparesderived from the figures above
Where Princeton sits.
Princeton ranks 66th of 157 Texas places modeled here, at the 59th percentile. Its 1,523 kWh per kW is above the Texas median of 1,518. The strongest months are June, August, July and the weakest are February, December, January; output peaks in June and bottoms out in February. 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
- Melissa, 13 km north: 1,517 kWh per kW, 6 less than Princeton.
- McKinney, 14 km west: 1,526 kWh per kW, 3 more than Princeton.
- Wylie, 17 km south: 1,534 kWh per kW, 11 more than Princeton.
- Allen, 17 km southwest: 1,530 kWh per kW, 7 more than Princeton.
- Anna, 19 km north: 1,524 kWh per kW, 1 more than Princeton.
- Murphy, 20 km southwest: 1,506 kWh per kW, 17 less than Princeton.
- Sachse, 24 km south: 1,507 kWh per kW, 16 less than Princeton.
- Plano, 27 km southwest: 1,527 kWh per kW, 4 more than Princeton.
- Fate, 28 km southeast: 1,497 kWh per kW, 26 less than Princeton.
Against Dallas
The nearest of the six largest modeled places is Dallas, 50 km to the southwest, at 1,500 kWh per kW. Princeton models 23 kWh per kW (1.5%) above it. Princeton lies 0.39 degrees of latitude north of Dallas, which on sun angle alone would point the other way, so clouds, haze and the weather station's record carry the difference. The weather station for Princeton is 1.4 km from the modeled point, against 2.4 km for Dallas, so part of the gap can come from which station's typical year was used.
The second-nearest large place is Fort Worth, 90 km southwest, where the same model gives 1,535 kWh per kW, so Princeton runs 12 below that figure. Against the Texas median place month by month, Princeton runs at least 2% higher in January, June, September, December. It runs at least 2% lower in March, July, October.
Electricity in Collin CountyEIA-861
Electricity prices nearby
EIA lists Oncor Electric Delivery and Texas-New Mexico Power in this county. Where Princeton 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 Princeton 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 1,523 kWh at $233 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.
- Grayson-Collin Elec Coop, Inc: 17.04¢ per kWh, a bundled average, 97,950 residential customers across 4 counties.
- Farmers Electric Coop, Inc: 11.95¢ per kWh, a bundled average, 88,221 residential customers across 12 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 Princeton. 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 Princeton 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 709312
Month by month, per kW.
| Month | kWh per kW |
|---|---|
| January | 105.1 |
| February | 98.9 |
| March | 120.9 |
| April | 137.3 |
| May | 142.2 |
| June | 149.6 |
| July | 148.7 |
| August | 149.5 |
| September | 139.6 |
| October | 121.9 |
| November | 109.0 |
| December | 100.5 |
| Year | 1,523 |
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 33.18, -96.51 (Princeton, population 37,019). Weather: typical-year data from station 709312, 1.4 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.