HELCO outage affects over 40K customers as Hamakua plant trips offline Sunday (Sept 2)

MEDIA RELEASE

Hawai‘i Electric Light reports that customers in portions of Hilo, Kea‘au, Puna, Honoka‘a, Kona, South Point, Waikoloa, and Waimea experienced a power interruption this morning.

An estimated 40,800 customers experienced a power interruption at 5:47 a.m. when a generating unit at independent power producer Hāmākua Energy Partners tripped offline unexpectedly followed by a combustion-turbine unit trip at Hawai‘i Electric Light’s Keahole Power Plant while it was responding to the sudden load changes. Automated load-shedding, which is necessary to protect the island’s power grid, operated properly. Alternate generation was started and service to most customers was restored within minutes. The remaining customers were restored by 6:50 a.m. The cause of all unit trips is under investigation.

Follow Hawai‘i Electric Light on Twitter @HIElectricLight for outage information and updates. To report a power outage, please call (808) 969-6666.