The plant in Madison, southeast of Pittsburgh, will produce ethanol from numerous feestocks including agricultural and construction waste, sustainable energy crops and woody biomass. Most US ethanol is corn-based.

Coskata officials say the flexible feedstock approach allows for true geographic flexibility, meaning facilities can be built anywhere a feedstock can be sourced or delivered.

While not commercial size, Coskata says the plant engineering demonstrates that it can be scaled up directly to installed capacity of 100 million gallons a year.

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