A $6 billion lifeline for struggling U.S. nuclear power plants is reportedly included in the nearly $1 trillion bipartisan infrastructure bill currently being mulled over in the U.S. Senate, but it won’t be thrown in time to rescue Illinois’s Byron and Dresden plants, according to owner and operator Exelon.

In an August 4 statement on second-quarter earnings, Exelon’s president and chief executive officer, Chris Crane, noted that while his company is encouraged by the growth of federal support for policies that acknowledge the value of nuclear’s clean energy generation, “passage of legislation remains uncertain and, regardless, will come too late to save our Byron and Dresden plants from early retirement this fall. While we remain hopeful that a state solution will pass in time to save the plants, clean energy legislation in Illinois remains caught in negotiations over unrelated policy matters, leaving us no choice but to continue down the path of closing the plants.” (Last August, Exelon announced its intention to prematurely retire Byron and Dresden, citing long­standing economic pressures. Last week, the company filed decommissioning plans for the two nuclear facilities.)