La Porte, TXLocal --:--Sun now --Daylight today --
Sun on a roof in La Porte.
The PVWatts model puts a generic roof array in La Porte at 1,461 kWh a year for each kW of panels, using typical-year weather from a station 2.4 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 La Porte climbs and falls, and the modeled output follows it.
kWh per kW DC, modeled by PVWatts. Best month 143, weakest 88: a ratio of 1.63.
How La Porte comparesderived from the figures above
Where La Porte sits.
La Porte ranks 133rd of 157 Texas places modeled here, at the 16th percentile. Its 1,461 kWh per kW is below the Texas median of 1,518. The strongest months are May, July, June and the weakest are February, December, January; output peaks in May and bottoms out in February. In all, 28.5% of the year arrives in June, July and August, less than the 29.4% of the median place.
Closest modeled neighbors
- Deer Park, 7 km west: 1,467 kWh per kW, 6 more than La Porte.
- Pasadena, 10 km west: 1,479 kWh per kW, 18 more than La Porte.
- Baytown, 13 km northeast: 1,416 kWh per kW, 45 less than La Porte.
- League City, 21 km south: 1,440 kWh per kW, 21 less than La Porte.
- Friendswood, 23 km southwest: 1,434 kWh per kW, 27 less than La Porte.
- Dickinson, 24 km south: 1,457 kWh per kW, 4 less than La Porte.
- Pearland, 29 km southwest: 1,469 kWh per kW, 8 more than La Porte.
- Texas City, 31 km southeast: 1,464 kWh per kW, 3 more than La Porte.
- Alvin, 32 km southwest: 1,453 kWh per kW, 8 less than La Porte.
Against Houston
The nearest of the six largest modeled places is Houston, 35 km to the west, at 1,422 kWh per kW. La Porte models 39 kWh per kW (2.7%) above it. At 0.12 degrees of latitude apart, the two sit at almost the same sun angle, so geometry explains little. The two weather stations sit a similar distance from their points (2.4 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, 269 km west, where the same model gives 1,483 kWh per kW, so La Porte runs 22 below that figure. Against the Texas median place month by month, La Porte runs at least 2% higher in November. It runs at least 2% lower in January, February, March, April, June, July, August, September, December.
Electricity in Harris CountyEIA-861
Electricity prices nearby
EIA lists CenterPoint Energy Houston Electric in this county. Where La Porte 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 La Porte 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 1,461 kWh at $224 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.
- San Bernard Electric Coop, Inc: 14.11¢ per kWh, a bundled average, 32,557 residential customers across 8 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 La Porte. 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 La Porte 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 $226 per kW a year as plain multiplication.
PVWatts v8station 740707
Month by month, per kW.
| Month | kWh per kW |
|---|---|
| January | 99.6 |
| February | 87.5 |
| March | 122.7 |
| April | 131.8 |
| May | 142.7 |
| June | 140.2 |
| July | 142.4 |
| August | 133.3 |
| September | 131.1 |
| October | 126.3 |
| November | 114.9 |
| December | 88.2 |
| Year | 1,461 |
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 29.67, -95.05 (La Porte, population 38,046). Weather: typical-year data from station 740707, 2.4 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.