Rate & Roof

Moulton, TXLocal --:--Sun now --Daylight today --

Sun on a roof in Moulton.

The PVWatts model puts a generic roof array in Moulton at 1,463 kWh a year for each kW of panels, using typical-year weather from a station 1.0 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 Moulton climbs and falls, and the modeled output follows it.

Sun elevation through the day over Moulton The sun's path at latitude 29.57, 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 kW1,463 kWh

kWh per kW DC, modeled by PVWatts. Best month 150, weakest 92: a ratio of 1.63.

How Moulton comparesderived from the figures above

Where Moulton sits.

Moulton ranks 965th of 1220 Texas places modeled here, at the 21st percentile. Its 1,463 kWh per kW is below the Texas median of 1,515. The strongest months are July, August, June and the weakest are November, February, December; output peaks in July and bottoms out in November. In all, 30.0% of the year arrives in June, July and August, more than the 29.3% of the median place.

Closest modeled neighbors

  • Flatonia, 14 km north: 1,488 kWh per kW, 25 more than Moulton.
  • Shiner, 16 km south: 1,496 kWh per kW, 33 more than Moulton.
  • Waelder, 20 km northwest: 1,485 kWh per kW, 22 more than Moulton.
  • Hallettsville, 25 km southeast: 1,509 kWh per kW, 46 more than Moulton.
  • Schulenburg, 26 km northeast: 1,482 kWh per kW, 19 more than Moulton.
  • Gonzales, 30 km west: 1,504 kWh per kW, 41 more than Moulton.
  • Yoakum, 31 km south: 1,463 kWh per kW, 0 the same as Moulton.
  • Weimar, 39 km east: 1,495 kWh per kW, 32 more than Moulton.
  • La Grange, 46 km northeast: 1,487 kWh per kW, 24 more than Moulton.

Against Austin

The nearest of the six largest modeled places is Austin, 100 km to the northwest, at 1,483 kWh per kW. Moulton models 20 kWh per kW (1.3%) below it. Moulton lies 0.73 degrees of latitude south of Austin, which on sun angle alone would point the other way, so clouds, haze and the weather station's record carry the difference. The two weather stations sit a similar distance from their points (1.0 km and 1.5 km), so station distance does little to explain the gap, and the weather record does the rest.

The second-nearest large place is San Antonio, 133 km west, where the same model gives 1,505 kWh per kW, so Moulton runs 42 below that figure. It runs at least 2% lower in January, February, March, May, June, September, October, November.

Electricity in Lavaca CountyEIA-861

Electricity prices nearby

Providers listed in the county

They are the largest bundled providers 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. Priced at the first provider's average, the modeled 1,463 kWh would come to $173 per kW a year, plain multiplication and not a savings estimate.

Modeled estimateruns in your browser

Size the array, see the kWh.

Scale the Moulton 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

8,778 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 694333

Month by month, per kW.

Modeled AC output in Moulton, Texas, kWh per kW DC, typical weather year
MonthkWh per kW
January96.5
February92.8
March120.6
April136.0
May139.5
June140.4
July150.2
August148.8
September127.3
October122.7
November91.9
December96.2
Year1,463

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 29.57, -97.15 (Moulton, population 858). Weather: typical-year data from station 694333, 1.0 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.