However, Bowling Green's green credentials were damaged in 2008, when the city signed a power contract with AMP-Ohio to help build a 960-megawatt coal-fired power plant in Meigs County, Ohio. Several large environmental groups, including Sierra Club, the Natural Resources Defense Council, and the Ohio Environmental Council, opposed the building of a coal-fired power plant due to the pollution it would cause. In late 2009, AMP canceled the project, citing an estimated 37% increase in cost to more than $3 billion.