Sun on a roof in Rio Vista.

How Rio Vista comparesderived from the figures above

Where Rio Vista sits.

Rio Vista ranks 375th of 1220 Texas places modeled here, at the 69th percentile. Its 1,546 kWh per kW is above the Texas median of 1,515. The strongest months are August, July, June and the weakest are February, December, January; output peaks in August and bottoms out in February. In all, 29.7% of the year arrives in June, July and August, more than the 29.3% of the median place.

Closest modeled neighbors

• Blum, 10 km south: 1,547 kWh per kW, 1 more than Rio Vista.
• Covington, 12 km southeast: 1,535 kWh per kW, 11 less than Rio Vista.
• Cleburne, 14 km north: 1,547 kWh per kW, 1 more than Rio Vista.
• Coyote Flats, 16 km northeast: 1,555 kWh per kW, 9 more than Rio Vista.
• Grandview, 18 km east: 1,535 kWh per kW, 11 less than Rio Vista.
• Keene, 19 km north: 1,539 kWh per kW, 7 less than Rio Vista.
• Itasca, 22 km east: 1,545 kWh per kW, 1 less than Rio Vista.
• Alvarado, 25 km northeast: 1,531 kWh per kW, 15 less than Rio Vista.
• Joshua, 26 km north: 1,548 kWh per kW, 2 more than Rio Vista.

Against Fort Worth

The nearest of the six largest modeled places is Fort Worth, 61 km to the north, at 1,535 kWh per kW. Rio Vista models 11 kWh per kW (0.7%) 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 Fort Worth's.

The second-nearest large place is Dallas, 84 km northeast, where the same model gives 1,500 kWh per kW, so Rio Vista runs 46 above that figure. Against the Texas median place month by month, Rio Vista runs at least 2% higher in April, May, June, August, September, December. It runs at least 2% lower in February.

Electricity in Johnson CountyEIA-861

Electricity prices nearby

EIA lists Oncor Electric Delivery and Texas-New Mexico Power in this county. Where Rio Vista is on Oncor Electric Delivery and Texas-New Mexico Power's lines, homes buy energy from a retail electricity provider and the price depends on the plan. Parts of Rio Vista 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 1,546 kWh at $237 per kW a year, plain multiplication and not a savings estimate or an offer.

Also listed in the county

• United Electric Coop Service Inc: 13.91¢ per kWh, a bundled average, 91,268 residential customers across 14 counties.
• HILCO Electric Cooperative, Inc.: 14.82¢ per kWh, a bundled average, 27,850 residential customers across 5 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 Rio Vista. 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 Rio Vista 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 $238 per kW a year as plain multiplication.