Rate & Roof

San Felipe, TXLocal --:--Sun now --Daylight today --

Sun on a roof in San Felipe.

The PVWatts model puts a generic roof array in San Felipe at 1,460 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 San Felipe climbs and falls, and the modeled output follows it.

Sun elevation through the day over San Felipe The sun's path at latitude 29.79, computed from solar geometry. The upper dotted arc is the June solstice and the lower one the December solstice; the solid arc is the month being shown.
MonthAll 12 monthsNoon sun-Daylight-Modeled output per kW1,460 kWh

kWh per kW DC, modeled by PVWatts. Best month 144, weakest 87: a ratio of 1.65.

How San Felipe comparesderived from the figures above

Where San Felipe sits.

San Felipe ranks 979th of 1220 Texas places modeled here, at the 20th percentile. Its 1,460 kWh per kW is below the Texas median of 1,515. The strongest months are July, May, August and the weakest are December, February, January; output peaks in July and bottoms out in December. 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

  • Sealy, 6 km southwest: 1,461 kWh per kW, 1 more than San Felipe.
  • South Frydek, 6 km southeast: 1,473 kWh per kW, 13 more than San Felipe.
  • Brazos Country, 8 km southeast: 1,461 kWh per kW, 1 more than San Felipe.
  • Pattison, 13 km east: 1,477 kWh per kW, 17 more than San Felipe.
  • Brookshire, 15 km east: 1,480 kWh per kW, 20 more than San Felipe.
  • Simonton, 18 km southeast: 1,473 kWh per kW, 13 more than San Felipe.
  • Wallis, 18 km south: 1,477 kWh per kW, 17 more than San Felipe.
  • Weston Lakes, 23 km southeast: 1,451 kWh per kW, 9 less than San Felipe.
  • Bellville, 23 km northwest: 1,450 kWh per kW, 10 less than San Felipe.

Against Houston

The nearest of the six largest modeled places is Houston, 69 km to the east, at 1,422 kWh per kW. San Felipe models 38 kWh per kW (2.7%) above it. At 0.0 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, 168 km west, where the same model gives 1,483 kWh per kW, so San Felipe runs 23 below that figure. Against the Texas median place month by month, San Felipe runs at least 2% higher in October. It runs at least 2% lower in January, February, March, April, June, July, August, September, December.

Electricity in Austin CountyEIA-861

Electricity prices nearby

EIA lists CenterPoint Energy Houston Electric in this county. Where San Felipe 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 San Felipe 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 1,460 kWh at $224 per kW a year, plain multiplication and not a savings estimate or an offer.

Also listed in the county

These utilities serve other parts of the county, which can include parts of San Felipe. 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 San Felipe 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 $225 per kW a year as plain multiplication.

Modeled estimate

Modeled output, kWh a year

8,760 kWh/yr

About - kWh in an average month. Priced at the chosen rate that energy comes to - a year, by multiplication only.

Assumes the same tilt, direction and equipment as the model below. Real output depends on the roof, shade, equipment and weather.

PVWatts v8station 718070

Month by month, per kW.

Modeled AC output in San Felipe, Texas, kWh per kW DC, typical weather year
MonthkWh per kW
January99.3
February91.1
March119.9
April132.2
May142.5
June137.7
July143.9
August142.0
September126.2
October129.7
November108.3
December87.0
Year1,460

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 29.79, -96.11 (San Felipe, population 717). Weather: typical-year data from station 718070, 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.

Texas electricity prices and providers

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.

Email updatesdouble opt-in

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.

Read this first

  • A model estimate for a generic system at this point, not a measurement and not a promise of output.
  • Shading, roof pitch, equipment and local rates will differ.
  • All prices on this site are in cents per kWh unless marked otherwise. Bills are US dollars per month.

Credits and notices

The credits and notices that each data source requires are printed word for word with that source in the Sources list below.