Virent Energy Systems Inc ., an energy technology company headquartered in Madison, Wis., was recently listed in the 2010 Global Cleantech 100 list. This year’s list recognized cleantech companies likely to make the most significant impact in the next five to 10 years.

Virent was listed under the Energy Generation category and was selected for its demonstration facility, where it is converting plant sugars into gasoline and gasoline blend components.

In a separate ranking, Virent’s chief executive officer, Lee Edwards, and chief technology officer, Randy Cortright, were paired at  No. 28 in the Biofuels Digest “Top 100 People in Bioenergy.” The publication honored biofuel leadership in 12 countries.