Solar System Sizing Tool — Kailua, HI
Use our interactive tool to determine the right solar system size for your home in Kailua. Adjust your monthly electricity bill and home size to see a personalized recommendation based on local solar conditions.
Size Your Solar System
$
Local rate: 43¢/kWh
ft
Peak sun hours: 5.6h/day
4.2
System Size (kW)
11
Panels Needed
198
Roof Space (sq ft)
$12,063
Est. Cost
8,651
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 Kailua, HI:
- Electricity usage: Your monthly bill is converted to annual kWh consumption using the local rate of 43¢/kWh.
- Solar irradiance: Kailua receives an average of 5.6 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 Kailua is 1,500 sq ft.
Solar at a Glance: Kailua, HI
43¢
Avg Rate / kWh
5.6h
Peak Sun Hours / Day
4.2 kW
Avg Recommended Size
11
Avg Panels Needed
$12,063
Est. Cost (before incentives)
Hawaiian Electric (HECO)
Utility Provider
Other Cities in Hawaii
Related Resources
Ready to Go Solar in Kailua, HI?
Get a Custom Solar Design for Kailua
Our experts will assess your roof, energy needs, and local conditions to design the perfect system for your Kailua home.
Get Your Free Quote