Renewable Energy Group Inc.’s Geismar biorefinery has returned to production, shipping its first truckloads of diesel after a two-year-long shutdown.

Renewable Energy Group acquired the plant in two separate deals with the former owners, joint-venture partners Syntroleum Corp. and Tyson Foods. The total value of those may reach $105 million.

The joint venture had invested $160 million in the plant, which makes diesel from animal fat. Renewable Energy Group, which owns biorefineries throughout the country, invested $15 million to return the idled plant to production.