Pinnacle West Capital Corp. announced Ted Geisler has been promoted to president of Arizona Public Service Co., the company’s principal subsidiary, effective May 16.

Geisler, who currently serves as senior vice president and chief financial officer for both Pinnacle West and APS, will be succeeded in those roles by Andrew Cooper, current vice president and treasurer. Both individuals will report directly to Jeff Guldner, PNW chairman, president and chief executive officer and APS chairman and CEO.

“Returning to separate CEO and president roles within APS allows us to consolidate our core utility functions, specifically non-nuclear operations, public policy, technology, customer experience and strategy,” said Guldner.

Geisler began his career at APS in 2001 in generation and has served in a variety of roles throughout the company. He was elevated from vice president and chief information officer to his current position as senior vice president and chief financial officer in January 2020.

His other leadership roles include general manager of transmission and distribution operations, as well as director responsibilities for investor relations, corporate strategy and transmission operations. He also has experience in renewable energy and energy trading.

Geisler earned a bachelor’s of science degree from Colorado State University and an MBA with an emphasis on strategy from Arizona State University. A Phoenix native, he is engaged in the community, currently serving on the board of Chicanos Por La Causa and volunteering with Hunkapi Programs, which provides equine therapy to children.

Newly promoted CFO Cooper joined Pinnacle West and APS in 2020 as vice president and treasurer after serving as director of corporate finance at Consolidated Edison Co. of New York. He began his career as an investment banker, including more than a decade at Barclays serving clients in the power and utilities industry.

A New York native, Cooper earned a bachelor’s degree in government with citation in Spanish from Harvard College. He went on to earn his law degree from Harvard Law School. Cooper serves on the board of directors for Valle del Sol.