Simpson Thacher & Bartlett LLP today announced that Erik Elsea has joined the Firm as a Partner in the Energy and Infrastructure Practice, based in Washington, D.C.
“Our continued investment in the growth of our market-leading Energy and Infrastructure Practice reflects the opportunities we see across the sector, and Erik’s more than 25 years of experience advising on significant energy and infrastructure transactions makes him an exceptional addition to our team,” said Eli Hunt, Co-Head of the Firm’s Energy and Infrastructure Practice.
“Since 2019, we have tripled the size of our Energy and Infrastructure group, a trajectory that reflects the surging client demand we are seeing across all asset classes,” said Breen Haire, Co-Head of the Firm’s Energy and Infrastructure Practice. “Erik’s arrival furthers that momentum and adds additional depth to our market-leading M&A capabilities in the sector. We are thrilled to welcome him to Simpson Thacher.”
Erik focuses his practice on mergers and acquisitions, securities law and general corporate matters across the power and energy sector, with a particular focus on conventional power, renewable energy and related infrastructure assets, as well as oil and gas. He represents buyers, sellers and financial advisors in a wide range of U.S. and cross-border transactions, including public and private acquisitions and divestitures, take-privates, minority stake investments and joint ventures.
“Simpson Thacher’s energy and infrastructure platform is exceptional—deeply commercial, highly collaborative and operating at the top of the market,” said Erik. “It is the ideal place to advise clients on their most complex and consequential transactions, and I am thrilled to join a team with such extraordinary momentum.”
Ranked #1 in all energy and infrastructure transactions for Q2 2026 (Infralogic, by deal value), Simpson Thacher is a market leader in the space, with a global Energy and Infrastructure Practice 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, supporting our clients throughout the lifecycle of a business—from formation and corporate structuring to project and asset development, financing and acquisition and exit.
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