Constance “Connie” Lau, president and chief executive of Hawaiian Electric Industries, Inc. will retire after 15 years to be replaced by Scott Seu, who is currently chief executive of the company’s largest subsidiary, Hawaiian Electric, which delivers power to 95% of Hawaii’s population, the companies said.

Meanwhile, Shelee Kimura, senior vice president of customer service and public affairs at Hawaiian Electric, will succeed Seu as the utility’s president and chief executive, becoming the first female chief executive in the company’s 130-year history, Hawaiian Electric Industries and Hawaiian Electric said in a joint press release.

The appointments of Seu and Kimura, as well as the appointment of Ann Teranishi, who became president and chief executive of HEI’s American Savings Bank subsidiary earlier this year, came as part of succession planning undertaken by the boards of directors of HEI, Hawaiian Electric and American Savings Bank, the companies said.