POET announced Monday that it is producing ethanol from corn cobs at its pilot scale facility in Scotland, S.D.
"The start-up has been extremely smooth," said POET CEO Jeff Broin, in a statement.
"After producing 1,000 gallons, we've already been able to validate all of what we learned in the lab and believe the process will be ready for commercialization when we start construction on Project LIBERTY next year."
Project Liberty is a $200-million commercial-scale cellulosic ethanol plant that the company hopes to bring online in 2011.
POET, headquartered in Sioux Falls, is pursuing a model that would result in adding cellulosic biorefining capacity to its existing 26 corn ethanol plants.