The Big Island's most trusted solar energy professionals

Hawaii's First
Solar Installer to Achieve the Prestigious NABCEP Certification

 A+ Accreditation
Better Business Bureau Verified

25+ Years
Serving our Customers and Community

Solar Power Systems

Off-Grid

Complete renewable energy independence you can live on.

Grid-Connected

Energy that is cost effective, clean, and available even when the grid is not.

Commercial

Add value to your business by drastically reducing electricity costs.

808-775-7410

What our Customers Say

The level of expertise during the installation spoke for itself. Clean, quality workmanship with a courteous attitude.

​Ian and Carol (customers since 2012)
Waimea, HI

RES did the original install of my off-grid photovoltaic system 12 years ago and the 3 upgrades since... They stay current on new technology and know what works best.

Don (customer since 2007)
Kailua-Kona, HI

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