Grand Solar was established in Hawaii in 1980 and became incorporated in 1985. The company has consistently been a leader in design, installation and service of nearly every type of solar thermal system sold in Hawaii. The original owner, John Grandinetti, still is present at all of the residential and commercial solar system installations completed by the company. In addition, the Photovoltaic systems offered by Grand Solar are US manufactured components only and carry industry leading product warranties on performance.
Conventional pump solar hot water systems.
Residential PV systems.
Power your home with clean energy! We install high-efficiency solar panels tailored to your home's energy needs.
Keep your solar panels operating at peak efficiency with our professional maintenance and repair services.
Store excess solar energy generated during the day and use it at night, reducing your reliance on the grid.
- Fully Accredited and Insured
An active member of the Better Business Bureau since 1990, Grand Solar has maintained an A+ rating consistently.
- More than 30 years in business
The company has consistently been a leader in design, installation and service of nearly every type of solar thermal system sold in Hawaii.
- Top-Tier Solar Technology
Invest in a solar system built to last, with durable components and a proven track record of performance.
- Positive Customer Reviews
Read testimonials from our satisfied customers who have experienced the benefits of solar energy with us.
- Financing Options Available
Explore flexible financing options to make going solar more affordable and accessible.
- Better Business Bureau
An active member of the Better Business Bureau since 1990, Grand Solar has maintained an A+ rating consistently.
