The reduction results from lower corn grind rates that enable more efficient, higher yield production.

GTL and IRE chief executive officer Richard Ruebe said that its team studied the impact of corn grind rates and other operating conditions on ethanol yield, distillers grains yield and energy usage.

"By running reduced rates and optimizing operating conditions at those reduced rates, we have found that we can lower our per gallon variable operating costs significantly," said Ruebe.

"In weak margin environments, those savings in variable costs more than offset the lower revenues from reduced sales. It’s an economic decision."

GTL Resources is a project development company engaged in the development, ownership, and operation of ethanol production facilities in US.