In a significant development, the US Department of Justice has mandated Constellation Energy Corp., a major energy company based in Pennsylvania, to sell its stake in several power plants in Texas and the Mid-Atlantic region as part of an antitrust agreement aimed at preventing anti-competitive practices. As a result of this settlement, which is pending court approval, Constellation must relinquish Calpine's ownership interest in two electricity plants, including the Gregory Power Plant near Corpus Christi, Texas, in order to safeguard competition and prevent potential price manipulation within the ERCOT and PJM electricity markets.

Ameren Illinois customers in central and southern Illinois are set to receive significant bill credits as part of a $38 million settlement with Dynegy Inc., following a lengthy investigation into market manipulation during an electricity capacity auction held by the Midcontinent Independent System Operator (MISO) in 2015.