HECO Power Outage Leaves More Than 130,000 Customers Affected Across Hawaii as Kona Storm Hits Oahu, Maui and Hawaii Island
A major HECO power outage swept across Hawaii late Friday as a Kona storm brought damaging winds, heavy rain and hazardous conditions that knocked out service to roughly 132,000 customers across Oahu, Maui County and Hawaii Island. The biggest concentration was on Oahu, where utility crews restored a key transmission line overnight but warned some neighborhoods could still face extended outages.
The latest utility update, issued at 2:30 a.m. ET Saturday, said power had been restored to about 29,000 customers on Oahu after storm damage disrupted a major transmission line serving Windward Oahu, East Honolulu and parts of Waikiki. Even with that restoration, the outage remained one of the largest weather-driven disruptions Hawaii has seen this year.
Oahu Was Hit Hardest by the Storm-Related Outages
The heaviest impact was on Oahu, where about 123,000 customers were without power as of the late Friday update. The utility said severe weather damaged transmission infrastructure feeding parts of East Honolulu after earlier line damage had already left the area with reduced service flexibility.
That left customers in Hawaii Kai and portions of East Honolulu at risk of overnight outages that could last longer depending on weather and access for repair crews. The storm also affected traffic signals, creating additional safety concerns on roads already dealing with strong winds, ponding and fallen debris.
The overnight restoration of a major line brought back service to thousands of customers, but it did not end the broader outage event.
Maui County and Hawaii Island Also Faced Extended Blackouts
Maui County had about 5,000 customers without electricity in various areas, including Upcountry and East Maui, in the same late Friday update. Repair work there was complicated by ongoing hazardous weather and road access issues, raising the likelihood that some outages would continue into Saturday.
On Hawaii Island, about 3,600 customers were without power, mainly in Puna and North and South Kona. The utility said some customers in the Kaloko and Milolii areas should expect to remain without service overnight until repairs could be completed safely.
Across all three service areas, the utility pointed to fallen trees, branches blown into power lines, lightning-related damage and flooding as major causes of the disruptions.
Why This HECO Power Outage Grew So Quickly
The outage expanded as the Kona storm intensified across the islands, bringing a combination of severe thunderstorms, heavy rainfall and powerful wind gusts. Those conditions can cause multiple types of electrical failures at once, from broken lines and damaged poles to blocked roads that slow restoration work.
The utility had already warned customers to prepare for extended outages as the weather system approached. By Friday afternoon, restoration crews were working on outages affecting more than 121,000 customers, and the total climbed further by evening as the storm continued moving through the state.
That progression matters because it shows the outage was not caused by a single isolated equipment failure. It was part of a wider storm emergency affecting several islands at the same time.
What Customers Should Watch Next
For customers still without service, the next key question is how quickly crews can safely reach damaged equipment. Restoration times can shift when high winds, flooding and debris continue to create dangerous working conditions.
The utility has urged customers to report outages directly, stay away from downed lines and prepare for the possibility that some blackouts may last through hazardous weather periods rather than ending quickly. It also noted that outage maps can lag during large-scale events because of the volume of service interruptions being processed.
For Oahu residents in particular, the status of East Honolulu and Hawaii Kai remains especially important because those areas were tied to the transmission damage that triggered the late-day escalation.
The Immediate Outlook Remains Uncertain
As of Saturday morning ET, the clearest confirmed picture is that the storm-driven HECO power outage remains a statewide restoration effort, not a brief local disruption. Oahu has taken the largest hit, but Maui County and Hawaii Island are also dealing with meaningful service losses and the risk of prolonged outages in harder-to-reach areas.
The next round of utility updates is likely to focus on how many customers remain offline after overnight work, whether weather conditions improve enough for broader repairs, and which communities face the longest path back to normal service.
