Sun on a roof in Coupland.

How Coupland comparesderived from the figures above

Where Coupland sits.

Coupland ranks 792nd of 1220 Texas places modeled here, at the 35th percentile. Its 1,495 kWh per kW is below the Texas median of 1,515. The strongest months are June, July, August and the weakest are December, February, November; output peaks in June and bottoms out in December. In all, 29.9% of the year arrives in June, July and August, more than the 29.3% of the median place.

Closest modeled neighbors

• Elgin, 12 km south: 1,491 kWh per kW, 4 less than Coupland.
• Taylor, 13 km north: 1,503 kWh per kW, 8 more than Coupland.
• Thrall, 17 km northeast: 1,499 kWh per kW, 4 more than Coupland.
• Hutto, 17 km northwest: 1,528 kWh per kW, 33 more than Coupland.
• Pflugerville, 20 km west: 1,495 kWh per kW, 0 the same as Coupland.
• Manor, 20 km southwest: 1,483 kWh per kW, 12 less than Coupland.
• Thorndale, 24 km northeast: 1,497 kWh per kW, 2 more than Coupland.
• Round Rock, 27 km west: 1,522 kWh per kW, 27 more than Coupland.
• Webberville, 28 km south: 1,479 kWh per kW, 16 less than Coupland.

Against Austin

The nearest of the six largest modeled places is Austin, 39 km to the southwest, at 1,483 kWh per kW. Coupland models 12 kWh per kW (0.8%) above it. The two figures are within 1 percent, which is about the size of the difference you get from two neighboring weather stations alone, so this page's result is effectively the same as Austin's.

The second-nearest large place is San Antonio, 156 km southwest, where the same model gives 1,505 kWh per kW, so Coupland runs 10 below that figure. Against the Texas median place month by month, Coupland runs at least 2% higher in January, June. It runs at least 2% lower in March, April, July, November.

Electricity in Williamson CountyEIA-861

Electricity prices nearby

EIA lists Oncor Electric Delivery in this county. Where Coupland is on Oncor Electric Delivery's lines, homes buy energy from a retail electricity provider and the price depends on the plan. Parts of Coupland 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 1,495 kWh at $229 per kW a year, plain multiplication and not a savings estimate or an offer.

Also listed in the county

• Austin Energy: 13.14¢ per kWh, a bundled average, 522,446 residential customers across 2 counties.
• Pedernales Electric Coop, Inc: 12.75¢ per kWh, a bundled average, 420,753 residential customers across 24 counties.
• Bluebonnet Electric Coop, Inc: 11.59¢ per kWh, a bundled average, 119,030 residential customers across 14 counties.
• Oncor Electric Delivery Company LLC: 5.64¢ per kWh, delivery charges only, before the retail energy price, 3,545,814 residential customers across 99 counties.

These utilities serve other parts of the county, which can include parts of Coupland. 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 Coupland 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 $230 per kW a year as plain multiplication.