"It is possible that the combination of Vistra's and Energy Harbor's nuclear and fossil-fuel plants in Ohio and Pennsylvania may substantially lessen competition and increase wholesale electricity prices," the filing read.
Vistra and Energy Harbor currently compete in auctions run by PJM Interconnection, a regional transmission organization that manages the electricity grid for more than 65 million consumers. In PJM's auctions, market prices are determined by the prices offered by competing generators, including Vistra and Energy Harbor.
The proposed acquisition would combine different generating units with varying cost structures under the control of Vistra, enabling it to profitably withhold electricity from some of its generating units to raise market prices, the DoJ's Antitrust Division said.
"The Department has considerable expertise in examining competition in wholesale electricity markets, including bringing enforcement actions focused on stopping anticompetitive mergers..," the filing added.
However, the Department has not concluded whether the proposed transaction violates the antitrust laws.
Price Action: VST shares are trading higher by 0.68% to $30.22 on the last check Friday.
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