Those with special medical needs can save up to $20 on their monthly power bill under a two-year trial program.
The program is limited to 2,000 people dependent on life-support equipment or who need to heat or cool their homes because of a medical condition.
HECO officials said the typical Oahu customer spends about $143 a month on power.
To qualify for the program, a customer's medical condition must be verified by a doctor. The annual savings translates to $240 a year.
"Providing a little financial relief for some of our most vulnerable neighbors is the right thing to do," said Jim Alberts, HECO senior vice president for customer service.
More information and applications for the program are available here.
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