It’s been predicted for some time that the redox flow energy storage space will, after some turmoil and rapid consolidation, find success in providing energy storage at durations of more than four hours. This past couple of weeks have been a tale of both turmoil and success.

Nuclear generation company Exelon and chemical company Albemarle, which has lithium mining facilities, are investigating opportunities in the energy storage space, having partnered with battery energy storage investor Volta Energy Technologies to do so.

Trina Best, the energy storage company begun as part of Trina Solar but now a separate entity in its own right, wants to go public by 2020 and has not ruled out building its own battery cell production facilities in future.