Sun on a roof in Willis.

How Willis comparesderived from the figures above

Where Willis sits.

Willis ranks 1181st of 1220 Texas places modeled here, at the 3rd percentile. Its 1,383 kWh per kW is below the Texas median of 1,515. The strongest months are May, July, August and the weakest are February, January, December; output peaks in May and bottoms out in February. In all, 29.0% of the year arrives in June, July and August, less than the 29.3% of the median place.

Closest modeled neighbors

• Panorama Village, 6 km south: 1,401 kWh per kW, 18 more than Willis.
• Conroe, 11 km south: 1,395 kWh per kW, 12 more than Willis.
• New Waverly, 12 km north: 1,401 kWh per kW, 18 more than Willis.
• Cut and Shoot, 16 km southeast: 1,399 kWh per kW, 16 more than Willis.
• Montgomery, 22 km west: 1,415 kWh per kW, 32 more than Willis.
• Woodloch, 24 km south: 1,412 kWh per kW, 29 more than Willis.
• Shenandoah, 28 km south: 1,416 kWh per kW, 33 more than Willis.
• Oak Ridge North, 30 km south: 1,397 kWh per kW, 14 more than Willis.
• Huntsville, 31 km north: 1,413 kWh per kW, 30 more than Willis.

Against Houston

The nearest of the six largest modeled places is Houston, 72 km to the south, at 1,422 kWh per kW. Willis models 39 kWh per kW (2.7%) below it. Willis lies 0.64 degrees of latitude north of Houston, and the sun stands higher in the sky the further south you go, which matches its lower modeled output. The two weather stations sit a similar distance from their points (2.9 km and 2.4 km), so station distance does little to explain the gap, and the weather record does the rest.

The second-nearest large place is Austin, 218 km west, where the same model gives 1,483 kWh per kW, so Willis runs 100 below that figure. It runs at least 2% lower in January, February, March, April, May, June, July, August, September, October, November.

Electricity in Montgomery CountyEIA-861

Electricity prices nearby

EIA lists CenterPoint Energy Houston Electric in this county. Where Willis is on CenterPoint Energy Houston Electric's lines, homes buy energy from a retail electricity provider and the price depends on the plan. Parts of Willis 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 1,383 kWh at $212 per kW a year, plain multiplication and not a savings estimate or an offer.

Also listed in the county

• Entergy Texas Inc.: 13.89¢ per kWh, a bundled average, 469,094 residential customers across 27 counties.
• Sam Houston Electric Coop Inc: 14.18¢ per kWh, a bundled average, 88,424 residential customers across 10 counties.
• Mid-South Electric Coop Assn: 15.37¢ per kWh, a bundled average, 37,251 residential customers across 6 counties.
• CenterPoint Energy: 5.41¢ per kWh, delivery charges only, before the retail energy price, 2,529,039 residential customers across 12 counties.

These utilities serve other parts of the county, which can include parts of Willis. 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 Willis 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 $213 per kW a year as plain multiplication.