Oʻahu and Hawaiʻi Island and Maui County customers, Hawaii · Instant discount
Hawaii Energy Solar Water Heating Instant Rebate
Run by Hawaii Energy
Hawaiian Electric customers on Oʻahu, Hawaiʻi Island, Maui, Molokaʻi and Lānaʻi get up to $2,750 off a new solar water heating system or qualifying retrofit, taken off the invoice by a participating contractor.
Amounts
How much you get
Up to $2,750, deducted from the contractor's invoice. The amount depends on the county and the system size; the participating contractor confirms the rebate for your address when quoting.
Eligibility
Do I qualify?
You need to meet all 2 of these.
Residential electric customers of Hawaiian Electric on Oʻahu, Hawaiʻi Island, Maui, Molokaʻi and Lānaʻi. Kauaʻi (KIUC) customers aren't eligible.
The work must be done by a participating Hawaii Energy Clean Energy Ally contractor.
What to doPick a contractor from Hawaii Energy's Clean Energy Ally directory (hawaiienergy.com/clean-energy-allies) before you book the work. Hawaii Energy - Water Heating Rebates Get a quote from a contractor
Equipment
What equipment counts
Applying
How to apply
Your contractor applies for you.
- Find a participating Clean Energy Ally contractor.
Ask which rebate amount applies at your address; it varies by county and system size.
- Schedule the installation with the contractor.
- Pay the invoice with the rebate already deducted.
The contractor submits the rebate application for you.
Forms and instructionsHawaii Energy - The Cost of a Solar Water Heating System (Hot Water, Cool Rates) · Hawaii Energy - Solar Water Heating · Hawaii Energy - Residential Rebates
Questions about applying877-231-8222 or hawaiienergy@honeywell.com
Stacking
Use it with
Can’t be combined withHot Water, Cool Rates Financing Program
Your address
Next steps
Check that it covers your address. Then, if you want, ask for a contractor quote.
Is it available at your address?
Before anything else
Your quote request is in If a contractor we work with serves your ZIP, they can contact you. We take one request per person; contact us to change it.
Get an email if this program changes
We'll write if its amount, status or deadline changes. Nothing else.
FAQ
Questions
How much does Hawaii Energy Solar Water Heating Instant Rebate pay?
Up to $2,750.
Do I need to be a Oʻahu, Hawaiʻi Island or Maui County customer?
Yes. It’s only for homes in Oʻahu and Hawaiʻi Island and Maui County customers, Hawaii. See Do I qualify for the details.
Do I have to use a contractor?
Yes. The work must be done by a participating Hawaii Energy Clean Energy Ally contractor.
Is it still available?
Yes. It was open when we last checked, on October 27, 2026.
Can I still claim the Hawaii state solar tax credit?
Yes, if your installation is eligible. Hawaii Energy says the state solar tax credit is still available for eligible installations and retrofits; check with a tax professional.
What does a solar water heating system cost in Hawaii?
About $9,390 on average, according to Hawaii Energy. The price depends on the tank size and your household's needs, and contractor prices vary.
Are the contractors vetted?
Yes. Participating contractors must be insured, licensed and in good standing with the Better Business Bureau, and Hawaii Energy inspects randomly selected systems.
Plain words
Words used on this page
References
Sources
This page is built from these official pages, run by the program itself.
- Hawaii Energy - Water Heating Rebates
- Hawaii Energy - The Cost of a Solar Water Heating System (Hot Water, Cool Rates)
- Hawaii Energy - Solar Water Heating
- Hawaii Energy - Residential Rebates
When one of these pages changes, we re-check this page against it.
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