Construction is expected to begin soon on a new biodiesel plant in northern Iowa that turns animal fats, grease from restaurants, and other feedstocks into biodiesel.

The Mason City (IA) Globe Gazette reports that the plant will produce three million gallons of biodiesel a year using the Mcgyan process, a method that uses less water and is capable of converting several different types of feedstocks into the green fuel:

“Ideally we’d like to have Holland Contracting to have the cement laid before a freeze to allow us to build during the winter,” said Shelley Burgess, senior vice president for communication and investor relations for Growth Design.

“Once the slab is down and the walls are up we can work inside,” [Bill Luetscher, president of Growth Design Energy Group] said.

Company officials say they had hoped to break ground last spring, but Iowa’s environmental assessment process delayed that date.