The Only Renewable Energy
Distributor You Will Ever Need

0 Years

in the Solar Industry

0%

Employee-Owned

0 MW

of Clean Energy Deployed

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Homes Powered

About Us

Established in Hawaii in 1975, Inter-Island Solar Supply has grown to become a global leader in renewable energy equipment distribution. We became a 100% employee-owned company in 2013, and continue to grow and build on our foundation of innovation, expertise and resourcefulness.

Our Mission

We are committed to delivering clean energy solutions that reduce reliance on costly and environmentally harmful fossil fuels. By fostering energy independence, our mission is to contribute to a cleaner, more sustainable future for communities around the world.

Our Partners

For decades, we have partnered with the most respected manufacturers in renewable energy, including SunEarth, A. O. Smith, REC, Enphase, Panasonic, IronRidge and more. These trusted relationships ensure our customers can rely on the durability, performance, and reliability of the products we offer.

Solaray Family of Companies

We are a proud member of the Solaray Family of Companies. Together with our sister companies — SunEarth Inc., Alternate Energy Technologies, Pacific Panel Cleaners, and Generator Power Systems — we share a commitment to empowering energy independence and sustainability.

In the News

Resources

Solar Water Heating

Solar PV & Energy Storage

Hawaii Solar Energy Association

HSEA is a non-profit trade association dedicated to advancing solar energy and energy storage to lower energy costs, combat climate change, and achieve energy independence for Hawaii.

Solar Maps

Solar maps provided by the Hawaiʻi State Energy Office Renewable EnerGIS.

Hawaii Energy

Hawaii Energy is a ratepayer-funded program that empowers residents and businesses to make smarter energy choices through energy efficiency and conservation.

Testimonials

“The team at Inter-Island Solar Supply (IISS) not only blazed the trail for renewable energy in Hawaii but continues to pave the way and improve service standards in our industry. With IISS's help we are able to provide better solar products and better service to our customers. Our field team views the IISS delivery staff as an extension of their crew.”

Desta Rudoph

Independent Energy Hawaii

“We have been using Inter-Island Solar Supply for over 17 years…and counting. They not only provide excellent service and value, they also support our industry like no other. Solid people and solid products.”

Chris DeBone

Hawaii Energy Connection — KumuKit

“At Commercial Plumbing, we value strong partnerships with companies that deliver quality products and reliable service. Inter-Island Solar Supply (IISS) has been a trusted resource for us over the years, providing the expertise and materials we need to get the job done right.

Their team is knowledgeable, easy to work with, and always willing to go the extra mile to support our projects. Whether it’s solar water heating systems or other plumbing-related solutions, they consistently provide great products and dependable service.

We highly recommend IISS to anyone looking for a reliable partner in the industry.”

Randy Hiraki

Commercial Plumbing

Locations

We have five convenient branch locations in the Hawaiian Islands located in Honolulu, Kahului, Lihue, Kailua-Kona, and Hilo.