Customer service call centers and hours of operation	(808) 548-7311 7:30am to 6:00pm (Monday - Friday)	Maui (808) 871-9777 7:00am to 5:00pm (Monday - Friday) From Molokai and Lanai, toll-free: 1-877-871-8461 7:00am to 5:00pm (Monday - Friday)	Hilo (808) 969-6999 7:30am to 4:30pm (Monday - Friday) Kona (808) 329-3584 7:30am to 3:30pm (Monday - Friday) Waimea (808) 885-4605 7:30am to 3:30pm (Monday - Friday)
Customer Service Center/Office locations and hours of operations	900 Richards Street Honolulu, HI 96813 7:30am to 5:00pm (Monday - Friday) 820 Ward Avenue Honolulu, HI 96814 7:30am to 4:00pm (Monday - Friday)	Maui 210 W Kamehameha Avenue Kahului, Maui 96732 8:00am-5:00pm (Monday - Friday) Molokai Lot 32A Ulili Street Palaau, Molokai 96748 8:00am-12:00pm (Tuesday)	Hilo 1200 Kilauea Avenue Hilo, HI 96720 730am to 4:30pm (Monday - Friday) Kona 74-5519 Kaiwi Street Kailua-Kona, HI 96740 7:30am to 3:30pm (Monday - Friday) Waimea HELCO Baseyard Kamuela, HI 96743 7:30am to 3:30pm (Monday - Friday)
Mailing addresses/Payment processing centers	P.O. Box 3978 Honolulu, HI 96812-3978	P.O. Box 1670 Honolulu, HI 96806-1670	P.O. Box 909 Honolulu, HI 96808-0909