Solar Panel Installation in Hilo, HI
Local sun, utility rules, permits and installers
Hilo has about 1,540 kWh a year per kW of rooftop solar (our estimate). Your utility decides what exported power earns, so see the rules for Hawaii Electric Light Co below, then get quotes.
Hilo solar at a glance
Utility rules and programs for Hilo
Hawaii Electric Light Co serves homes in Hilo.
| Utility | Type | Solar export rule |
|---|---|---|
| Hawaii Electric Light Co Inc | investor-owned | On Hawaii Island, new customers choose SRE Export (10.6 cents daytime, 14.8 overnight, 23.1 evening peak, locked 7 years) or SRE Non-Export. Apply in the Customer Interconnection Tool. |
Program details are from each utility’s own pages (read October 2026). See the Hawaii incentives table for statewide credits and a status for every program.
Permits and approvals in Hilo
- Department of Public Works, Building Division, Hawaii County: permit information · (808) 961-8331
- The county says a permit is required for all building, electrical and plumbing work, and applications go through its EPIC system. Hilo and Kailua are served by Hawaii County, not a city office.
- The utility must approve the connection before you switch on: Hawaiian Electric (Hawaii Island) · your own utility’s interconnection page.
- Check any contractor on the Hawaii professional license search before you sign.
- Hawaii law (HRS 196-7) limits associations from banning solar devices on single-family homes and townhouses; placement rules are allowed (current wording not confirmed).
Fees and steps change; confirm with the office before you start. We have not verified timelines for Hilo.
Costs and savings
We do not have verified installed prices for Hilo alone. The Hawaii figures above show what to expect; real quotes depend on your home, equipment and installer. Try the solar savings calculator, and get at least two written quotes.
Choosing an installer
- License: check the contractor on the Hawaii professional license search and that the license covers this work.
- Quote: ask for an itemized written quote that names the equipment, warranties and who pulls the permit and handles the utility approval.
- Compare: get two or three quotes and compare them line by line, not only the total.
Get solar quotes in Hilo
Tell us about your project in Hilo. We reply ourselves and match you with a licensed installer who serves your area. It is free, with no obligation, and nothing is shared with an installer unless you choose one.
More for Hilo
Home Battery Installation in Hilo · Backup Generator Installation in Hilo · Home EV Charger Installation in Hilo · Hilo energy guide · Hawaii energy guide.
Solar Panel Installation in Hilo FAQs
Is solar worth it in Hilo?
The sun is strong (about 1,540 kWh a year per kW, our estimate), but export credits are low, so solar pays most when sized to what you use at home or paired with a battery. See the Hawaii incentives for the state credit.
Is there a federal solar tax credit in 2026?
No. The federal 25D credit ended for expenditures after December 31, 2025. Hawaii has a state income tax credit for solar (35 percent of PV cost, reported cap $5,000 per system), with new rules from tax year 2027 under Act 24.
Do I need a permit for solar panels in Hilo?
Usually yes, and the utility may need to approve solar and batteries. Department of Public Works, Building Division, Hawaii County handles permits in Hilo; see the permit information above.
How do I find a licensed installer in Hilo?
Use the quote button on this page. We reply ourselves and match you with a licensed installer who serves your area; you can check any contractor on the Hawaii professional license search.
Sources: sunshine and climate NASA POWER; hazards FEMA National Risk Index; utility numbers EIA-861 (2024); prices EnergySage (October 2026) and Generac (U.S.); credits IRS and the Hawaii State Energy Office; permit information from the city or town’s own page; utility programs from each utility’s own pages (October 2026). General information, not financial, tax, legal or electrical advice. See our editorial policy.