TFG Radiant acquired about 20% of the outstanding shares of Ascent in August 2011.

The increase will put TFG Radiant’s ownership at approximately 41%.

TFG Radiant will acquire the stake in the company presently owned by Norsk Hydro Produksjon for $4m, or about $0.50 per share.

The transaction is expected to close within the next 90 days.

Ascent Solar is a developer of thin-film photovoltaic modules using flexible substrate materials.