Insights

The data your solar contractor doesn't want you to see

Analysis of 66,000+ Honolulu building permits — real prices, real contractors, real neighborhoods.

April 2026  ·  8 min read  ·  Data through Jun 2025
The Federal Solar Tax Credit Is Gone. Here's the Hawaii Playbook.
The 30% federal ITC expired December 31, 2025. Hawaii's RETITC still pays 35% — but the cap structure creates a strategy most homeowners don't know about: splitting a 10 kW system into two 5 kW permits can nearly double your state credit.
Tax Credits ITC Expiration RETITC
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April 2026  ·  5 min read  ·  Based on 63,000+ residential permits
What 66K Honolulu Solar Permits Reveal About Pricing
The median residential solar installation in Honolulu cost $23,000 in 2015. By 2024, that dropped to $13,000. We dug into every permit filed with the city to find out who's charging what — and which neighborhoods are getting the best deals.
Data Analysis Pricing Honolulu
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