Darren Jamison, the long-time head of Capstone Green Energy Corp. has resigned as chief executive effective Aug. 22.
Robert Flexon, the chairman of the board of directors of the Van Nuys microturbine manufacturer, has been appointed as interim chief executive until a successor is named.
Denise Wilson, Capstone lead independent director on the board, thanked Jamison for his 16 years of service at the company.
“As we support the company and employees during this transition period, we are grateful to be able to tap into Bob’s leadership and industry experience,” Wilson said in a statement.
Flexon has served on the Capstone board since 2018 and served as non-executive chairman since January 2021.
He is currently chair of the board of PG&E Corp. and also serves on the ERCOT Board of Directors. Prior to focusing on board service, he was chief executive of Dynegy Inc. for seven years. Before Dynegy, Flexon served at UGI Utilities as chief financial officer; chief executive of Foster Wheeler, a global engineering and construction firm; and chief financial officer and chief operating officer of independent power producer NRG, Capstone said in a release.
“I am looking forward to engaging with the team during the transition period while working with the rest of the board to recruit and retain a leader who will guide Capstone in the years ahead,” Flexon said in a statement. “My immediate focus will be improving the company’s financial health to better and more consistently serve our customers, suppliers and other key stakeholders of Capstone.”
On the day of the announcement, shares in Capstone (CGRN) closed up 11 cents, or just more than 13%, to 95 cents on the Nasdaq, on a day when that market closed up at just above 1%.