The renewable energy project features two reciprocating combustion engines capable of generating 3,200kW of energy for the local electric grid, or enough electricity to power more than 1,800 area homes.
Republic Services area president Jamey Amick said: "Today’s landfill can help to regenerate air, water and land in a local ecosystem, and in many cases it can create a renewable power source from waste decomposition.
"We are incredibly proud of this project, and the economic and environmental impacts it will make in the Upstate area for years to come."
Republic Services’ subsidiary Republic Services of South Carolina had developed the Upstate Regional LFGTE project in partnership with Lockhart Bioenergy, an affiliate of Lockhart Power Company and Pacolet Milliken Enterprises.
Power generated from the Lockhart Bioenergy-operated plant will be sold to Duke Energy.
Lockhart Power chief operating officer Bryan Stone said: "The facility not only generates renewable clean energy for customers in Union County and surrounding areas, but it’s also a great economic development tool for attracting industries tailored for green initiatives to our area. This project is a win-win for our community."