Semprius, a US-based solar company previously backed by Siemens, raised $3m in January.
Semprius raised the funds on January 12 from venture firm Morgan Creek Capital Management, Illinois Emerging Technologies Fund, a fund managed by Illinois Ventures, and the CIA’s In-Q-Tel.
This followed the company in June last year selling a 16% stake to German industrial conglomerate Siemens. Siemens led a $20m series C round that month which also had backing from Applied Materials’ corporate venturing unit Applied Ventures and venture capital firms Arch Venture Partners, Intersouth Partners, and GVC Investment.
Semprius had previously raised $8.2m from a range of venture capital funds in its second round funding dating back to June 2009, as well as a $3m grant from the US Department of Energy in February 2010.