Compare the highest-rated home solar professionals in Keaau, Hawaii. All contractors are licensed, insured, and verified through our rigorous screening process.
As one of the largest residential solar companies in the U.S., Sunrun offers a strong presence in Hawaii. They are known for their comprehensive service, from consultation and design to installation and maintenance, with a major focus on their solar lease and PPA (Power Purchase Agreement) financing options, which are popular in the Hawaiian market.
A highly-rated, locally-owned and operated company based in Kailua-Kona that serves the entire Big Island, including Keaau. They have a stellar reputation for customer service, quality installations, and expertise in both grid-tied and complex off-grid battery-based systems, which is crucial for Hawaii's energy landscape.
A leading local provider known for its expertise in the Hawaii market. They offer a full suite of services from design to maintenance and are particularly strong in helping homeowners navigate state-specific incentives like the Hawaiian Electric (HECO) grid-supply and self-supply programs. They have an office in Hilo, making them a very local option for Keaau residents.
** The home solar market in Keaau and the broader Big Island is mature and highly competitive, driven by some of the highest electricity costs in the nation. The average quality of providers is very high, as the challenging environment (volcanic smog, salt air) and complex utility interconnection requirements (Hawaiian Electric) necessitate experienced and technically proficient installers. Competition is fierce among both large national companies (like Sunrun) and exceptional local specialists (like Alternate Energy Inc. and Hawaii Energy Connection). Typical pricing for a residential system is above the national average due to shipping costs and market dynamics, but the return on investment is significantly accelerated by the high cost of grid power. A standard 6-8 kW grid-tied system can range from **$25,000 to $40,000+ before incentives**. The federal tax credit (30%) and any applicable state programs dramatically reduce this net cost. Battery storage is increasingly becoming a standard component of new installations due to Hawaii's push for energy resilience and the nuances of its grid interconnection policies, adding a significant but valuable cost to the overall system.
4.7+ star average from verified customer reviews
All contractors are properly licensed and insured
10+ years average experience in the industry
Familiar with Keaau regulations and climate
Get answers to common questions about home solar services in Keaau, Hawaii.
While Keaau receives more rainfall than other parts of the Big Island, modern solar panels are highly efficient at generating power even on cloudy days. The consistent, year-round tropical sunlight in Hawaii still provides excellent energy production, and the occasional rain helps naturally clean your panels, reducing maintenance. Proper system sizing by a local installer will account for microclimate variations to ensure your energy needs are met.
For a typical Keaau home, a solar PV system costs between $20,000 and $35,000 before incentives, depending on size and equipment. Critically, Hawaii offers a state tax credit of 35% (capped at $5,000) in addition to the 30% federal tax credit, significantly reducing your net cost. You also benefit from the highest electricity rates in the nation, making the payback period for your investment in Keaau relatively short.
Yes, all solar installations require a building permit from the Hawaii County Department of Public Works. For grid-tied systems, your installer must also handle the interconnection agreement with Hawaiian Electric (HECO), which is mandatory. Due to grid stability rules, new systems on the HECO grid often require a "smart" inverter that can be managed by the utility, a key detail your local provider will navigate for you.
Prioritize providers licensed in Hawaii (C-61 or C-60 license) with extensive local experience, especially with HECO's interconnection process. Ask for references from recent installations in Keaau or nearby Puna districts to see how their systems perform in our specific climate. A reputable company will offer a detailed site assessment that factors in your roof's orientation, potential shading from tropical foliage, and your household's energy usage patterns.
Solar panels are designed to be durable and are not typically damaged by vog or ash fall, though heavy accumulation of particulates can temporarily reduce output. The frequent rain in Keaau helps rinse away most residues. It's advisable to choose an installer who includes a monitoring system so you can track performance and schedule occasional professional cleaning if a noticeable drop occurs during prolonged dry spells with vog.