A longtime Jones Day partner in Washington who had been co-leader of the firm's energy practice was sworn in Thursday as chairman of the Federal Energy Regulatory Commission.

Kevin McIntyre, a Jones Day lawyer since 1999, represented energy companies facing regulatory, compliance and enforcement challenges. Former clients included St. Louis-based Ameren Corp., Chicago's Lakeside Energy LLC and TECO Energy Inc. of Tampa, Florida, according to McIntyre's financial disclosure released by the U.S. Office of Government Ethics.

McIntyre also provided legal services to Total Petrochemicals & Refining USA Inc. and EDF Energy Services LLC, both based in Houston, Texas.

In an ethics agreement, McIntyre pledged he would not for a year after his resignation from Jones Day “participate personally and substantially in any particular matter involving specific parties in which I know the firm is a party or represents a party” unless he first obtained a waiver.

Financial disclosures and ethics agreements are mandatory for certain executive branch nominees, and they offer a glimpse of legal services and compensation by some of the country's biggest law firms and companies. McIntyre, nominated in July, was among more than a dozen Jones Day lawyers who left the firm to take various positions in the Trump administration.

McIntyre reported $1.8 million in partnership share, an amount that would account for last year and up to the filing of his disclosure. He estimated the value of his anticipated partnership share at between $500,000 and $1 million. McIntyre also reported: “Pursuant to customary arrangements for retiring partners, I also will retain term life insurance coverage.”

McIntyre identified the value of his Jones Day capital account at between $250,000 and $500,000. “I currently have a capital account with the firm into which I have paid capital contributions pursuant to my partnership agreement, and I will receive a refund of that account within 30 days of my withdrawal from the firm,” McIntyre wrote in an ethics agreement.

FERC plays a central role in the regulation of the transmission of natural gas, oil and electricity between and among U.S. states.

“Thirty years ago this summer, I first discovered FERC when, as a law clerk at an energy law firm here in Washington, I was assigned to a natural gas rate matter,” McIntyre said in a statement at his confirmation hearing in September. “What I encountered in that first brush with FERC was a bustling, multifaceted agency with a language all its own and a mission whose importance was obvious to me even then.”

The U.S. Senate confirmed McIntyre, a Georgetown University Law Center graduate, last month. Kevyn Orr, partner-in-charge of Jones Day's Washington office, in a statement described McIntyre as “among the most knowledgeable energy regulatory leaders in the country.”

McIntyre's financial disclosure is posted below:

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