Putnam, TXLocal --:--Sun now --Daylight today --
Sun on a roof in Putnam.
The PVWatts model puts a generic roof array in Putnam at 1,616 kWh a year for each kW of panels, using typical-year weather from a station 1.9 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 Putnam climbs and falls, and the modeled output follows it.
kWh per kW DC, modeled by PVWatts. Best month 160, weakest 107: a ratio of 1.49.
How Putnam comparesderived from the figures above
Where Putnam sits.
Putnam ranks 212th of 1220 Texas places modeled here, at the 83rd percentile. Its 1,616 kWh per kW is above the Texas median of 1,515. The strongest months are July, June, May and the weakest are December, February, November; output peaks in July and bottoms out in December. In all, 28.5% of the year arrives in June, July and August, less than the 29.3% of the median place.
Closest modeled neighbors
- Baird, 19 km west: 1,641 kWh per kW, 25 more than Putnam.
- Moran, 20 km north: 1,623 kWh per kW, 7 more than Putnam.
- Cisco, 21 km east: 1,630 kWh per kW, 14 more than Putnam.
- Cross Plains, 27 km south: 1,602 kWh per kW, 14 less than Putnam.
- Clyde, 29 km west: 1,650 kWh per kW, 34 more than Putnam.
- Eastland, 36 km east: 1,594 kWh per kW, 22 less than Putnam.
- Carbon, 37 km east: 1,590 kWh per kW, 26 less than Putnam.
- Rising Star, 37 km southeast: 1,609 kWh per kW, 7 less than Putnam.
- Albany, 41 km north: 1,639 kWh per kW, 23 more than Putnam.
Against Fort Worth
The nearest of the six largest modeled places is Fort Worth, 179 km to the east, at 1,535 kWh per kW. Putnam models 81 kWh per kW (5.3%) above it. Putnam lies 0.41 degrees of latitude south of Fort Worth, and the sun stands higher in the sky the further south you go, which matches its higher modeled output. The two weather stations sit a similar distance from their points (1.9 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 Dallas, 232 km east, where the same model gives 1,500 kWh per kW, so Putnam runs 116 above that figure. Against the Texas median place month by month, Putnam runs at least 2% higher in January, February, March, April, May, June, July, September, November, December.
Electricity in Callahan CountyEIA-861
Electricity prices nearby
EIA lists AEP Texas North in this county. Where Putnam is on AEP Texas North's lines, homes buy energy from a retail electricity provider and the price depends on the plan. Parts of Putnam 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 1,616 kWh at $248 per kW a year, plain multiplication and not a savings estimate or an offer.
Also listed in the county
- Taylor Electric Coop Inc: 16.14¢ per kWh, a bundled average, 19,215 residential customers across 11 counties.
- Comanche County Elec Coop Assn: 15.65¢ per kWh, a bundled average, 7,487 residential customers across 7 counties.
- AEP Texas North Company: 5.86¢ per kWh, delivery charges only, before the retail energy price, 158,488 residential customers across 51 counties.
These utilities serve other parts of the county, which can include parts of Putnam. 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 Putnam 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 $249 per kW a year as plain multiplication.
PVWatts v8station 638732
Month by month, per kW.
| Month | kWh per kW |
|---|---|
| January | 115.5 |
| February | 111.2 |
| March | 141.3 |
| April | 149.3 |
| May | 151.4 |
| June | 153.3 |
| July | 159.5 |
| August | 148.5 |
| September | 137.8 |
| October | 127.5 |
| November | 113.6 |
| December | 107.2 |
| Year | 1,616 |
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 32.37, -99.2 (Putnam, population 77). Weather: typical-year data from station 638732, 1.9 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.