The Cost of a Solar Water Heating System

In Hawaii, the average solar water heating system can cost about $8,500 on average depending on the tank size and need. We help to make getting a solar water heating system installed in your home both easy and affordable. We provide some options to help you offset costs:


Instant Rebate $1,000 INSTANT REBATE

This instant rebate immediately reduces the amount you pay to your contractor. Work with one of our Clean Energy Allies to receive the instant rebate. It’s a win-win for all.

Hot Water, Cool Rates Financing Program

Our Hot Water, Cool Rates offer helps Hawaii residents finance a new solar water heating system through one of our many Participating Lenders. For a limited time, we provide up to a $1,000 incentive for Participating Lenders to buy down the interest on your loan. The lender will then provide you with a zero or low interest rate loan depending on your credit and/or the financial institution.


Sample Cost Savings

To make it easy for you, we’ve provided the example below, which shows how Hawaii Energy’s solar water heating rebates, combined with federal and state tax credits, can substantially reduce the cost.

*$8,500 is the average system cost for existing home retrofits. Your cost may vary as different household needs require different sizes of solar water heating systems. Contractor prices may also vary. Check with an appropriate taxing authority for your tax credit eligibility. **Hawaii Revised Statute § 235-12.5 (b)(1)(A) caps the credit at $2,250 per system for single-family residential properties.


Tax Credits

In addition to Hawaii Energy’s rebate, you may be eligible to receive additional tax credits through the state and through the Inflation Reduction Act. These can greatly reduce the amount of tax you owe dollar-for-dollar. Federal and state tax credits are subject to change, as such, please consult your tax professional for further information.

How Do I Get Started?

For both rebates, first find and contact a Hawaii Energy Participating Contractor to learn more today. For those interested in the Hot Water, Cool Rates offer, after you’ve selected a Participating Contractor, contact one of our many Participating Lenders in Hawaii, Honolulu or Maui county to learn more today.

For questions or additional information, please call Hawaii Energy at (808) 537-5577 or toll-free at (877) 231-8222.

Why Switch to Solar Water Heating?

Switching to a solar water heating system can save you up to 40% on your electric bill (over $600) a year. That's enough to buy 800 pounds of rice!

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