Ioxus, a US-based battery maker, which is backed by two tri-party corporate venturing funds, Energy Technology Ventures and Aster Capital, has raised $15m out of a $20m equity offering, according to a regulatory filing.
Previously in April 2011, Ioxus raised $21m in a series B round from a consortium including two tri-party corporate venturing funds: Energy Technology Ventures, a General Electric-NRG Energy-ConocoPhillips joint venture set up in January, and Aster Capital, backed by European industrial groups Alstom, Schneider Electric and Rhodia. The others in the consortium were Northwater Capital, through its Northwater Intellectual Property Fund, and venture capital firm Braemar Energy Ventures.