The company wants to use this year to set the course of EnBW in the time after the phase out of nuclear power and coal, Schell told shareholders in a speech held at the group's annual general meeting.
"To this end, we launched the 'EnBW 2030' strategy process a few weeks ago," he said, adding that the group planned gross investments of 14 billion euros ($15.4 billion) by 2025.
He said this included a review of the group's assets, which include fossil fuel-based as well as renewable generation assets, adding the company's set-up could be adjusted if needed.
EnBW, which recently brought forward the phase-out of its coal-fired power plants and saw its last nuclear power station end service in mid-April, is currently seeking to sell two minority stakes in its high-voltage power grid TransnetBW.
In March, the company sold a 49.9% stake in its 2.4 billion euro He Dreiht offshore wind farm project to a consortium of Allianz Capital Partners, Danish investor AIP Management and Norges Bank.
($1 = 0.9071 euros)
(Reporting by Christoph Steitz; Editing by Madeline Chambers, Friederike Heine and Maria Sheahan)
