Green Energy Partners-DeKalb planned to build the $60 million plant near Lithonia, but construction never began. The agreement with the county, approved in 2010, called for the facility to be built within two years.
DeKalb County would have sold waste from its Seminole Landfill to power the plant.
Community members opposed the plant because they feared the possibility of carcinogenic emissions.
“The community has spoken, and we have taken action,” said Interim DeKalb CEO Lee May. “Hopefully this gives the residents some closure, as the cancellation of this contract removes the source of the fuel for the a gasification plant, no matter where it would be built.”