Solar in Longmont, CO
With Xcel Energy Colorado's electricity at about 16.8¢ per kWh and 1,490 kWh of sun per kW, solar is worth it for a typical Longmont home today: about a 13.2-year payback.
- Payback, typical home
- 13.2 yrsColorado: 12.4 yrs
- 25-year net
- $18,368after paying $15,485
- Sun
- 1,490kWh per kW per year
- Electricity
- 16.8¢7% below U.S. average
A typical Longmont home, by the numbers
| Utility | Xcel Energy Colorado |
|---|---|
| Electricity use | 584 kWh a month |
| Best-value system | 4.7 kW, about 11 panels, 7,005 kWh a year (100% of use) |
| Cost | $15,485 |
| First-year savings | $1,128 |
| Payback | 13.2 years |
| Exported power | 13.5¢/kWh (Xcel Energy Colorado) |
Cash purchase, no federal credit, 2.6% yearly rate increases. Run it with your own numbers.
Homes in Longmont
- Owner-occupied homes
- 62%
- Single-family detached
- 59%
- Median home value
- $573k
- Median year built
- 1991
- Population
- 99,406
Census ACS 2020–2024.
Installers working in Longmont
Public installation records for Colorado don't name installers, so we can't rank local companies here. Browse installers in Colorado.
Always verify the license and get at least three quotes. Compare quotes side by side.
Questions about solar in Longmont
Is solar worth it in Longmont, CO?
For a typical home in Longmont, solar is worth it at 2026 prices: a 4.7 kW system costs about $15,485 after state incentives, saves about $1,128 in year one and pays back in about 13.2 years. Enter your address for an estimate based on your roof and bill.
How much solar power does a system produce in Longmont?
About 1,490 kWh per year for each kW of panels on a south-facing roof, based on PVWatts and local weather. That's 6% less than the Colorado average. East- or west-facing roofs produce roughly 10–20% less.
Who is the electric utility in Longmont?
Most homes in Longmont are served by Xcel Energy Colorado, at about 16.8¢ per kWh on average. Some areas are served by City of Longmont, Poudre Valley REA, United Power.
How much do solar panels cost in Longmont?
A fair cash price is around $3.05 per watt before incentives, so about $15,485 for a 4.7 kW system. There's no federal tax credit for homeowners who buy in 2026.
Nearby
- Erie 13 yrs
- Lafayette 13 yrs
- Boulder 13.3 yrs
- Broomfield 12.9 yrs
- Loveland 13.6 yrs
- Northglenn 12.6 yrs
- Thornton 12.6 yrs
- Westminster 13 yrs
- All of Colorado
Data: PVWatts (National Laboratory of the Rockies), EIA-861 2025 adjusted to 2026, U.S. Census ACS, LBNL Tracking the Sun, state policy research as of October 2026.