Solar System Sizing Tool — Hilo, HI
Use our interactive tool to determine the right solar system size for your home in Hilo. Adjust your monthly electricity bill and home size to see a personalized recommendation based on local solar conditions.
Size Your Solar System
$
Local rate: 44¢/kWh
ft
Peak sun hours: 4.8h/day
4.5
System Size (kW)
12
Panels Needed
216
Roof Space (sq ft)
$12,866
Est. Cost
7,909
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 Hilo, HI:
- Electricity usage: Your monthly bill is converted to annual kWh consumption using the local rate of 44¢/kWh.
- Solar irradiance: Hilo receives an average of 4.8 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 Hilo is 1,350 sq ft.
Solar at a Glance: Hilo, HI
44¢
Avg Rate / kWh
4.8h
Peak Sun Hours / Day
4.5 kW
Avg Recommended Size
12
Avg Panels Needed
$12,866
Est. Cost (before incentives)
Hawaii Electric Light
Utility Provider
Other Cities in Hawaii
Related Resources
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