April 24 (Reuters) - Hawaiian Electric on

Wednesday told customers to resume using electricity a normal,

ending a call to conserve power on Hawaii Island after its

generation capacity dropped due to some units going out of

service.

The Keahole CT-5 unit was online ahead of schedule following

a major maintenance overhaul, along with the Puna Steam unit and

the Kanoelehua CT-1 unit.

These units have a combined production capacity of up to 53

megawatts (MW), which could account for nearly one-third of

Hawaii Island's typical peak demand of 180 MW.

Generation margins have recovered to the point that

conservation can be lifted, the Honolulu-based company said.

Hawaiian Electric and independent power producer Hamakua

Energy continue to troubleshoot and repair the generating units

that are out of service, it said.

On March 25, it had asked its customers in Hawaii Island to

reduce or shift their electricity use through April due to the

unavailability of several large generators and cautioned that

rolling outages might be needed.

"Our customers made a difference, and we were able to

prevent additional shortfalls with their help," said Kristen

Okinaka, Hawaiian Electric spokesperson.

Large businesses and government agencies made a significant

impact by voluntarily reducing their electricity use, the

company said.