What Size Solar System Do I Need in Northern Utah?
How to right-size a solar PV array for a Northern Utah home based on actual usage, sun-hours, and planned electrification.
What size solar system do I need in Utah?
Most Northern Utah homes use 9,000 to 14,000 kWh a year. With our 4.5-5 peak sun-hours and typical south-facing roof, that translates to roughly a 7 to 11 kW array. Plan for future loads — EV charging, heat pumps, induction ranges — by sizing 10-20% larger than current usage. Avoid the temptation to oversize for export credits; with current Rocky Mountain Power rules, exported energy is credited below retail.
Want a real answer for your project?
Generalities are useful; site visits are better. We do free no-pressure quotes across Weber and Davis counties and tell you what your specific situation actually involves — including when the answer is “smaller scope” or “do it later.” Call 801-940-2000 or use the form to send project details.