The energy storage system producer raised $30m in a round co-led by SoftBank subsidiary SB Energy that also featured PTT Global, Evergy and BASF.

SB Energy, a renewable energy-focused subsidiary of telecommunications and internet conglomerate SoftBank, co-led a $30m series C round for US-based energy storage system provider ESS on Monday.

The round was co-led by energy investment fund Breakthrough Energy Ventures and included chemical producers PTT Global and BASF, the latter through its BASF Venture Capital unit, as well as Evergy Ventures, an affiliate of energy utility Evergy.

Cycle Capital Management, Presidio Partners Investment Management, IPM Group and Pangaea Ventures filled out the…

Robert Lavine

Robert Lavine is special features editor for Global Venturing.