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Simpson Thacher Grows Energy and Infrastructure Financing Team

05.18.26

Simpson Thacher & Bartlett LLP today announced that Marten Olsson has joined the Firm’s Banking and Credit Practice as a Partner in New York, where he will focus on energy and infrastructure financing matters.

Marten represents sponsors, issuers, developers, investors, initial purchasers and lenders in the full spectrum of infrastructure transactions. With an emphasis on renewable power (including wind, solar and geothermal facilities), conventional power, battery storage, digital and LNG facilities, he also has experience in acquisition financings, restructurings and liability management transactions.

“Marten’s ability to navigate complex multi-source, multi-jurisdictional financings—from innovative project finance structures to sophisticated acquisition financings—sets him apart, said Brian Steinhardt, Co-Head of the Firm’s Global Banking and Credit Practice. “Simpson Thacher is at the forefront of advising on the financing of major energy and infrastructure projects, and clients will benefit from Marten’s extensive experience across loans, private placements, bonds and structured debt and equity products.”

“The Firm’s market-leading Energy and Infrastructure Practice is experiencing unprecedented demand and there has never been more of a need for lawyers who can structure and execute highly complex infrastructure financings,” said Breen Haire, Co-Head of the Firm’s Energy and Infrastructure Practice. “Marten is a leading finance lawyer whose track record in oil and gas, power and digital infrastructure will be an asset to our clients.”

“Simpson Thacher is known as a preeminent advisor on energy and infrastructure financing matters,” said Marten. “The platform that the Firm has built is dynamic and multifaceted, providing clients with end-to-end counsel across the entire value chain in the sector, and I look forward to joining the team.”

Marten’s addition reflects the continued expansion of the Firm’s energy and infrastructure capabilities, including our project finance platform. In the past year, the Energy an Infrastructure Practice has seen the addition of a dozen partners both through new talent and organic growth.

Simpson Thacher is a market leader in Energy and Infrastructure, with a global team of more than 150 dedicated lawyers offering unparalleled market coverage. The Firm has represented parties on all sides of historic and innovative energy and infrastructure transactions. Ranked #1 or #2 overall law firm by volume for the past 10 years by Loan Pricing Corporation, client rely on the Firm’s market-leading Banking and Credit Practice for advice on an array of complex credit transactions and financial instruments at all levels of the corporate capital structure.

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