Electric companies in Hawaii
4 electric utilities serve Hawaii, according to US EIA-861 service-territory filings and live outage feeds. The largest by customers is Hawaiian Electric Co Inc, with about 310,559 customers in Hawaii (US EIA-861, 2025).
Territory is filed by county, so a county can list several utilities; usually only one serves a given address, and your electric bill names it.
Find yours by ZIP code
Every electric utility in Hawaii
Largest first, by customers on its lines in Hawaii (US EIA-861, 2025). “Live” is whether MassOutage can see its outages.
| Utility | Type | Customers | Counties | Live | Report an outage |
|---|---|---|---|---|---|
| Hawaiian Electric Co Inc | Investor Owned | 310,559 | 1 | Live · county | - |
| Hawaii Electric Light Co Inc | Investor Owned | 90,899 | 1 | Live · county | - |
| Maui Electric Co Ltd | Investor Owned | 71,962 | 2 | Live · county | - |
| Kauai Island Utility Cooperative | Cooperative | 35,617 | 1 | Live · county | - |
Electric utilities by county
Each county's utilities, largest in the state first. The county name opens its live outage page.
Electric companies in Hawaii: FAQ
- How many electric companies serve Hawaii?
- 4 electric utilities serve Hawaii, according to US EIA-861 service-territory filings and live outage feeds.
- What is the largest electric company in Hawaii?
- Hawaiian Electric Co Inc, with about 310,559 customers in Hawaii (US EIA-861, 2025).
- Which electric company serves my address in Hawaii?
- Your electric bill names it. Service territory is filed by county, so MassOutage lists the utilities serving each Hawaii county; usually only one of them serves a given address, and a utility can tell you whether it serves yours.
- Who do I call to report a power outage in Hawaii?
- Your electric utility. MassOutage has an outage phone line, report page or outage map on file for 0 of the 4 utilities serving Hawaii, listed above; for the others, check your bill or the utility's website. For a downed power line, stay at least 35 feet away and call 911.
Live power outages in Hawaii →
Data from EIA Form 861 (utility reliability), every source we read. Service territory and customer counts are each utility's own EIA-861 filing; a utility a live outage feed has reported in a county is listed there too.