Hawaiian Electric Industries, Inc. is the largest supplier of electricity in the U.S. state of Hawaii, supplying power to 95% of Hawaii's population through its electric utilities: Hawaiian Electric Company serving Oahu, Hawai'i Electric Light Company serving The Big Island, and Maui Electric Company serving Maui, Lanai and Molakai. Hawaiian Electric Company, Hilo Electric Light Company, and Maui Electric Company employ more than 2,000 people. Approximately 20,000 Hawaii residents are shareholders of HECO’s parent company, Hawaiian Electric Industries. The company is headquartered in Honolulu. The island of Kauai is the only Hawaiian island not supplied by HEI. Instead, the consumer-owned Kauai Island Utility Cooperative manages that island's electricity. Wikipedia