transferred about $180 million in tax benefits the three subsidiaries would have received in 2015. Ameren retained Genco's inactive Hutsonville and Meredosia plants, and agreed to buy back from IPH for $133 million three natural gas electrical generating plants. Dynegy agreed to honor the union collective bargaining agreements in force at all plants. Under the deal, Dynegy acquired five coal-fired generating plants: Coffeen in Coffeen, Illinois; Duck Creek in Canton, Illinois; E.D. Edwards in Bartonville, Illinois; Joppa in Joppa, Illinois; and Newton in Newton, Illinois. As the deal worked its way through state and federal regulatory approval, Dynegy took advantage of low interest rates and refinanced its debt. The company obtained $1.3 billion in term loan B facilities and $500 million in revolving credit. The company used this income to retire an $800 million, seven-year line of credit and a $500 million, two-year line of credit. Dynegy agreed that the revolving credit line would be paid off and terminate within five years. Two syndicated loans made up the $1.3 billion loan package. The $800 million loan and the $500 million loan were both due in 2020. This left Dynegy with $1.28 billion in lines of credit and $500 million in outstanding bonds. The Ameren plants-for-debt swap also ran into trouble. The Federal Energy Regulatory Commission (FERC) had to approve the deal and ensure that there was no negative impact on consumers from Dynegy's expanding market share in the Midwest. But on April 16, FERC said that the studies submitted by Dynegy and Ameren were inadequate, and it ordered the two firms to rerun the studies and report back to FERC by July 14. On July 16, FERC again declined to approve or disapprove the Dynegy-Ameren deal. The agency said that it Dynegy's study showed it charging market rates for energy in the Midwest. But FERC said it worried that transmission bottlenecks in the area would permit Dynegy to charge much more. Furthermore, federal regulators were considering an expansion in the market area IPH could serve. FERC asked Dynegy to provide additional information on transmission limitations and market area expansion. In August, the Sierra Club formally filed opposition to the Dynegy-Ameren deal. The environmental group said the transmission bottleneck issue gave Dynegy too much market power. It also argued that Dynegy and Ameren had submitted only regional market power data, and had not accounted for local impacts (which could be very