Solar System Sizing Tool — Boulder, CO
Use our interactive tool to determine the right solar system size for your home in Boulder. Adjust your monthly electricity bill and home size to see a personalized recommendation based on local solar conditions.
Size Your Solar System
$
Local rate: 15.8¢/kWh
ft
Peak sun hours: 5.5h/day
5.5
System Size (kW)
14
Panels Needed
252
Roof Space (sq ft)
$15,634
Est. Cost
11,013
Annual kWh
100%
Energy Offset
Energy Offset100% of your usage covered by solar
0%50%100%
How We Calculate Your System Size
Your recommended solar system size is based on several factors specific to Boulder, CO:
- Electricity usage: Your monthly bill is converted to annual kWh consumption using the local rate of 15.8¢/kWh.
- Solar irradiance: Boulder receives an average of 5.5 peak sun hours per day, which determines how much energy each panel produces.
- Panel specifications: We use 400W panels, each requiring approximately 18 sq ft of roof space, which is standard for modern residential installations.
- Roof space: The total roof area needed depends on the number of panels. The average home in Boulder is 1,900 sq ft.
Solar at a Glance: Boulder, CO
15.8¢
Avg Rate / kWh
5.5h
Peak Sun Hours / Day
5.5 kW
Avg Recommended Size
14
Avg Panels Needed
$15,634
Est. Cost (before incentives)
Xcel Energy
Utility Provider
Other Cities in Colorado
Related Resources
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