Collinsville, TXLocal --:--Sun now --Daylight today --
Sun on a roof in Collinsville.
The PVWatts model puts a generic roof array in Collinsville at 1,529 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 Collinsville climbs and falls, and the modeled output follows it.
kWh per kW DC, modeled by PVWatts. Best month 156, weakest 92: a ratio of 1.7.
How Collinsville comparesderived from the figures above
Where Collinsville sits.
Collinsville ranks 481st of 1220 Texas places modeled here, at the 61st percentile. Its 1,529 kWh per kW is above the Texas median of 1,515. The strongest months are July, June, August and the weakest are December, February, November; output peaks in July and bottoms out in December. In all, 29.9% of the year arrives in June, July and August, more than the 29.3% of the median place.
Closest modeled neighbors
- Tioga, 10 km south: 1,540 kWh per kW, 11 more than Collinsville.
- Whitesboro, 11 km north: 1,522 kWh per kW, 7 less than Collinsville.
- Sadler, 14 km northeast: 1,524 kWh per kW, 5 less than Collinsville.
- Gunter, 18 km southeast: 1,511 kWh per kW, 18 less than Collinsville.
- Road Runner, 18 km southwest: 1,508 kWh per kW, 21 less than Collinsville.
- Pilot Point, 18 km south: 1,516 kWh per kW, 13 less than Collinsville.
- Callisburg, 19 km northwest: 1,528 kWh per kW, 1 less than Collinsville.
- Southmayd, 20 km east: 1,521 kWh per kW, 8 less than Collinsville.
- Dorchester, 21 km east: 1,529 kWh per kW, 0 the same as Collinsville.
Against Dallas
The nearest of the six largest modeled places is Dallas, 87 km to the south, at 1,500 kWh per kW. Collinsville models 29 kWh per kW (1.9%) above it. Collinsville lies 0.77 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 Collinsville 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, 96 km southwest, where the same model gives 1,535 kWh per kW, so Collinsville runs 6 below that figure. Against the Texas median place month by month, Collinsville runs at least 2% higher in January, April, June, July, September. It runs at least 2% lower in March, October, December.
Electricity in Grayson CountyEIA-861
Electricity prices nearby
EIA lists Oncor Electric Delivery and Texas-New Mexico Power in this county. Where Collinsville 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 Collinsville 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 1,529 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.
- Grayson-Collin Elec Coop, Inc: 17.04¢ per kWh, a bundled average, 97,950 residential customers across 4 counties.
- Cooke County Elec Coop Assn: 15.46¢ per kWh, a bundled average, 16,192 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 Collinsville. 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 Collinsville 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 $235 per kW a year as plain multiplication.
PVWatts v8station 699403
Month by month, per kW.
| Month | kWh per kW |
|---|---|
| January | 108.8 |
| February | 101.5 |
| March | 121.9 |
| April | 138.8 |
| May | 140.7 |
| June | 151.8 |
| July | 155.9 |
| August | 149.6 |
| September | 141.1 |
| October | 119.5 |
| November | 107.6 |
| December | 91.6 |
| Year | 1,529 |
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 33.56, -96.91 (Collinsville, population 2,045). Weather: typical-year data from station 699403, 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.