Simpson Thacher is a market leader in Energy and Infrastructure, with a global team that offers unparalleled market coverage.
280+
Transactions in
Oil and Gas
255+
Transactions in
Power and Alternative Energy
235+
Transactions in
Digital Infrastructure and Telecommunications
85+
Transactions in
Transportation and Logistics
110+
Transactions in
Social Infrastructure
With over $215 billion in deal volume in 2025 alone, our dedicated practice is comprised of 60+ partners and 110+ counsel and associates that provide global coverage to our clients. Our lawyers have 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. Our breadth and depth of experience comes from representing banks, investors and financial sponsors, including each of the world’s top ten largest infrastructure sponsors, as well as corporates, developers and utilities, across a wide array of transactions.
#1
Legal
Advisor on all Digital Infrastructure Transactions Globally and in North
America by Deal Value and Deal Count (Infralogic, 2025)
Tier 1
Legal Advisor in Infrastructure M&A and Acquisition Financings, London (Legal 500, 2026)
#1
Legal Advisor on all Power M&A
in North America (Infralogic, 2025)
Simpson Thacher’s Energy and Infrastructure attorneys regularly advise on transactions for conventional and alternative energy projects, power generation and storage assets, transmission lines, pipelines, liquefaction, storage and processing facilities, CCUS, transportation, digital infrastructure (including data centers, software systems, towers, fiber and wireless networks), recycling facilities, water treatment plants, mining, petrochemicals, manufacturing and other infrastructure assets throughout the world.
“[Simpson Thacher] has shown an excellent ability to act as a business partner on key commercial aspects of complex deals. The firm is extremely capable of taking complex items and drafting clear unambiguous terms.”
- Chambers USA (quoting an Energy and Infrastructure Client)
Deals of the Year 2025
Simpson Thacher is proud to have advised on deals that received the following awards in the last year:
Value-Add Deal of the Year in Europe, IJGlobal Investor Awards
Digital Infrastructure Deal of the Year in Europe, IJGlobal Investor Awards
Utilities Deal of the Year in Europe, IJGlobal Investor Awards
Refinancing Deal of the Year in Latin America, IJGlobal Investor Awards
Securitization Deal of the Year in North America, IJGlobal Investor Awards
Investor Acquisition of the Year in North America, IJGlobal Investor Awards
Towers Deal of the Year, TMTFinance Awards
Data Center Deal of the Year, TMTFinance Awards
Fiber Deal of the Year, TMTFinance Awards
Digital Infrastructure Deal of the Year in APAC, TMTFinance Awards
Digital Infrastructure Debt Financing of the Year in APAC, TMTFinance Awards
Infrastructure and M&A Deal of the Year in Australia, Mergermarket M&A Awards