Haleakala Solar
Haleakala Solar is Hawaii’s longest-running solar name, installing since 1977 with more than 14,000 systems on its record. It carries NABCEP and Tesla Powerwall certifications, and offers something valuable on older island homes: roof repair and treatment handled alongside the install, so one contractor owns the whole roof penetration.
- Since: 1977, per its own site
- Installed base: 14,000+ systems
- Credentials: NABCEP; Tesla Powerwall certified
- Specialty: roof repair and treatment handled alongside the solar install
- Focus: residential rooftop solar and battery storage
- Service area: Oahu, Maui and Kauai
- Website: haleakalasolar.com
Facts above come from the company’s own published materials, accessed August 8, 2026. Licence verification is recorded separately.