Solar calculator for Utah

The average Utah home uses 774 kWh a month and pays 12.2 cents per kWh, which puts Utah at some of the cheapest electricity in the country, which stretches payback. Utah has both a heating and a cooling season, so the bill swings both ways and a full year of bills gives a better answer than one month. A south-facing fixed array there makes about 1,484 kWh per installed kW a year, and the worst winter month still gets 2.59 peak sun hours a day. Drop in your own bill below and the numbers on this page are replaced by yours.

A worked example for Utah

Take the average home: 774 kWh a month, which is 9,288 kWh a year, at 12.2 cents per kWh (EIA, 2024 residential averages, as of 2026-11). Sized to cover all of that use, the tool returns 6.3 kWdc and 16 panels, needing about 336 square feet of roof. The installed estimate is $15,584 (national median, EnergySage H2 2025), yearly savings are about $1,133, and simple payback is 13.8 years, with no incentive applied.

Sun and yield in Utah

We use 1,484 kWh per installed kW per year for Utah, from NREL PVWatts v8 for the state's largest city at a 20 degree south-facing tilt (via TheGreenWatt, as of 2026-11). The darkest month averages 2.59 peak sun hours a day, which matters if you plan to go off-grid or size a battery. A different roof angle or heavy shade changes this, so treat it as a starting point.

Incentives

The 30% federal tax credit ended for homeowner purchases after December 31, 2025, so none is applied here. See the tax credit guide. Look up Utah and your own utility for net metering terms and any local programs before relying on a payback number.

Planning estimate. Permits, interconnection approval and a licensed electrician are required for grid-tied systems.

Questions