Northfield was one of the towns that joined together with other communities throughout central New Hampshire to form the Concord Regional Solid Waste/Resource Recovery Cooperative (The Co-op) in 1985. The purpose of the Co-op is to provide for the long-term disposal of solid waste through the construction of a centralized waste-to-energy facility.
The Co-op consists of cities and towns located in central and north-central New Hampshire. The total population of the Co-op communities in 2004 was 169,000, approximately 15% of the total State population. Member communities are located in four counties—Belknap, Grafton, Hillsborough, and Merrimack.
The Co-op maintains a contract with Wheelabrator Concord Company (WCC) for the financing, design, construction, operation, repair, and maintenance of the waste-to-energy facility.
As a member community the Town of Northfield can appoint one member and one alternate to the Co-op's governing body.