As part of Constellation Energy’s plan to buy Calpine, Calpine will sell power plants in the PJM Interconnection totaling 3,546 MW to allay concerns the combined company could use its market power to affect power prices, the companies told the Federal Energy Regulatory Commission on Friday.

“Applicants have committed to a proposed divestiture plan that fully addresses even theoretical competitive concerns to avoid a potentially protracted proceeding and speed the government approval process,” Constellation and Calpine said in their application for the deal at FERC.

Constellation intends to buy Calpine in a deal with an equity purchase price of $16.4 billion, the independent power producers said Jan. 10. The combined entity will own almost 60 GW of nuclear, natural gas, geothermal, hydro, wind, solar, cogeneration and battery storage. Calpine owns 27 GW, according to the application.

The companies currently own 25.5 GW in PJM, where there is 177 GW of installed capacity, according to the application.

Under a plan to mitigate any potential market power, Houston-based Calpine will sell four power plants in eastern PJM through a bidding process, according to the application. They are the:

The power plants are “valuable, high-performing [and] dispatchable,” Constellation, based in Baltimore, and Calpine said. The companies said they would sell the plants within a year of closing their deal.

The combined company will have geographically diverse operations across the United States, Constellation and Calpine told FERC. “This will allow the company to better serve customers with a broader array of energy and sustainability products to power homes and businesses at competitive prices,” the companies said.

Constellation and Calpine asked FERC to approve the deal by May 27. They expect the transaction will be completed in the fourth quarter after it is approved by FERC, the U.S. Department of Justice, the New York Public Service Commission and the Public Utility Commission of Texas.