SolFocus aims to expand its manufacturing capacity from 0.5 megawatts (MW) in 2008 to over 10MW to be shipped this year, and more than 50MW going into 2011.
Funds raised in the C round will be used to support the manufacturing ramp up to volume production.
SolFocus announced a first close on the C Round in January of this year, at which time it had raised $47m.