Solar System Sizing Tool — Ketchikan, AK
Use our interactive tool to determine the right solar system size for your home in Ketchikan. Adjust your monthly electricity bill and home size to see a personalized recommendation based on local solar conditions.
Size Your Solar System
$
Local rate: 17.5¢/kWh
ft
Peak sun hours: 2.3h/day
12.3
System Size (kW)
31
Panels Needed
558
Roof Space (sq ft)
$34,919
Est. Cost
10,286
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 Ketchikan, AK:
- Electricity usage: Your monthly bill is converted to annual kWh consumption using the local rate of 17.5¢/kWh.
- Solar irradiance: Ketchikan receives an average of 2.3 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 Ketchikan is 1,450 sq ft.
Solar at a Glance: Ketchikan, AK
17.5¢
Avg Rate / kWh
2.3h
Peak Sun Hours / Day
12.3 kW
Avg Recommended Size
31
Avg Panels Needed
$34,919
Est. Cost (before incentives)
Ketchikan Public Utilities
Utility Provider
Other Cities in Alaska
Related Resources
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