In February, US-army private equity fund OnPoint Technologies (managed by venture capital firm Arsenal Venture Partners) invested in Nanosolar's then-$20m round, which has now been increased to $70m.

US-based thin film solar printing company Nanosolar, backed by a wide range of corporate and financial investors, has increased its latest round by $50m and raised more than $500m since 2002.

In February, US-army private equity fund OnPoint Technologies (managed by venture capital firm Arsenal Venture Partners) invested in Nanosolar’s then-$20m round, which has now been increased to $70m.

Investors in this latest round include OnPoint Technologies, Mohr Davidow Ventures, Ohana Holdings, and family offices.

Nanosolar has in…