SolidEnergy Announces $34M Series C Investment and Hires New Chief Operating Officer WOBURN, Mass., January 8, 2018-- SolidEnergy Systems announced today that it has completed a $34M Series C funding round, bringing the total funding to date to more than $50M. SolidEnergy is a developer and producer of advanced semi solid Li-Metal technology, the lightest rechargeable cells in the world that can be manufactured using existing Li-ion manufacturing infrastructure. The company also announced that Bud Collins, the former CEO of NEC Energy Solutions and President of A123 Energy Solutions, has joined SolidEnergy Systems as COO.