The new agreement, which is for up to five years, was recently approved by the Marion County Board of Commissioners and commences in September 2014 after the expiration of an existing 30-year agreement.
Under the terms of the new agreement, the county will supply 145,000 tons of municipal waste per year to Covanta Marion.
Marion county commissioner Sam Brentano said, "The new contract provides for the continuation of reliable waste disposal and extends a successful partnership between Covanta and Marion County that began in the mid-1980s.
"The EfW facility coupled with innovative recycling programs has enabled Marion County to be a leader in solid waste management."
Since its inception, the Covanta Marion EfW facility has converted approximately five million tons of municipal solid waste into approximately 2.2 million MWh of clean, renewable energy, which is enough to power more than 190,000 homes for a year.
The plant also recovered and recycled approximately 100,000 tons of metal, the equivalent amount of steel used to build more than 80,000 automobiles and reduced approximately five million tons of greenhouse gases based on national averages, which is equal to avoiding the annual greenhouse gases from nearly 950 thousand passenger vehicles.