Solar panels in Lehi, UT
Roofs in Lehi get about 1,770 hours of usable sunlight a year — more than 76% of the cities we've measured. Here's what that means in cost, savings and payback, using real rooftop data rather than a national average.
Check your specific roof in Lehi → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical Lehi solar system costs
A 18-panel system (7.2 kW) is about right for an average Lehi home using 10,800 kWh a year. It would produce roughly 10,832 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 4,814 | $6,384 | $539 | 11.8 yrs |
| 12 panels | 4.8 kW | 7,222 | $9,576 | $809 | 11.8 yrs |
| 16 panels | 6.4 kW | 9,629 | $12,768 | $1,078 | 11.8 yrs |
| 20 panels | 8 kW | 12,036 | $15,960 | $1,244 | 12.8 yrs |
| 26 panels | 10.4 kW | 15,647 | $20,748 | $1,345 | 15.4 yrs |
Notice that payback barely improves as systems get bigger, and eventually gets worse. That's because you can only save money on electricity you were going to buy anyway. Once a system covers your usage, extra panels mostly generate exports at a much lower rate.
Why Lehi gets 1,770 sun hours
That figure comes from Google's analysis of real rooftops across Lehi — it already accounts for shading from trees, chimneys and neighbouring buildings, which is why it's lower than the raw "hours of daylight" figures you'll see elsewhere. An unusually open, unshaded roof in Lehi reaches about 1,824 hours, roughly 3% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,770 hrs/yr |
|---|---|
| Unshaded roof | 1,824 hrs/yr |
| Electricity rate (Utah avg) | 11.2¢/kWh |
| Installed cost assumed | $2.85/W |
| Panel size assumed | 400 W |
| Federal tax credit | 30% |
| Typical household usage | 10,800 kWh/yr |
| Power used as generated | 35% |
| Paid for exported power | full retail (net metering) |
| Rooftops sampled here | 9 |
| Google imagery from | 2022 |
Nearby cities
See all of Utah → statewide sunlight, rates, incentives and every city we've measured.
Lehi solar questions
How many solar panels do I need in Lehi?
About 18 panels for an average home. Lehi roofs get 1,770 usable sun hours a year, so each 400W panel produces roughly 602 kWh annually.
Is solar worth it in Lehi?
At 11.2¢/kWh and 1,770 sun hours, a typical system pays for itself in about 11.9 years and returns roughly $15,899 over 25 years. That is slower than the national average, so compare quotes carefully.
How much do solar panels cost in Lehi?
A 7.2 kW system costs about $20,520 before incentives and $14,364 after the 30% federal tax credit. Prices vary by installer, roof complexity and equipment.
Worth reading before you buy
Estimates only, generated 2026-08-22 from Google Solar API rooftop samples and average Utah electricity rates. Not a quote and not financial advice. Your roof, usage, utility plan and local incentives will change these numbers — get real quotes before buying.