Solar and batteries in Kailua, Oahu
How much sun do Kailua roofs get?
We sampled 400 Kailua roofs from Google's Solar API. Most get enough sun for solar and a battery to pay off, even on the windward side.
4.9 on Google, 300+ reviews38 installs in Kailua
Check your own roof
Area numbers are averages. Type your address to see your own roof's sun hours, panel count and savings.
Your Kailua addressStreet address, Kailua, HI 96734
Show my roof
Uses Google aerial imagery of your roof. No sign-up to see results.
Kailua roofs in numbers
Roofs good for solar71%284 of 400 roofs. Google Solar API, sampled 30 Nov 2026
Median sun hours1,910A year, best part of the roof. Google Solar API, 400 roofs, 30 Nov 2026
Median usable roof540 sq ftFits about 12 panels. Google Solar API, 400 roofs, 30 Nov 2026
IEH installs in Kailua38IEH records, Dec 2026
"Good for solar" means at least 1,600 sun hours a year and 300 sq ft of usable roof. The sample is 400 homes in ZIP 96734 picked at random; your roof may differ, which is why the estimate above reads your own.
Questions Kailua homeowners ask
Is Kailua too cloudy for solar?Windward clouds cut output a little, but the median Kailua roof still gets 1,910 sun hours a year in our sample. Most roofs we sampled clear the 1,600-hour line we use for "good for solar".
Do I need a battery on Oahu?Usually yes. Export credits on Oahu are low, so a battery lets you use your own solar power in the evening instead of selling it cheaply.
Can you fix a system another company installed?Yes. We repair systems from any installer, including ones that are no longer in business.Check if your system is underperforming
How much does solar cost in Kailua?
Where do these numbers come from?
About this page
- Data
- Google Solar API
- Sample
- 400 roofs in Kailua
- Sampled
- 30 Nov 2026
- Reviewed
- By IEH, Wed 2 Dec 2026