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Simpson Thacher is a market leader in Energy and Infrastructure, with a global team that offers unparalleled market coverage.

#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)

With over $215 billion in deal volume in 2025 alone, our Energy and Infrastructure practice is comprised of 60+ dedicated 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 matters, 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), banks as well as corporates, developers and utilities, across a wide array of transactions. 

Simpson Thacher’s Energy and Infrastructure attorneys regularly advise on transactions spanning traditional and emerging sectors throughout the world:

  • Digital Infrastructure: data centers, artificial intelligence and software systems, towers, fiber, wireless networks and telecommunications
  • Oil & Gas: LNG, upstream, midstream, downstream, and oil field services
  • Power & Renewables: conventional generation, transmission and distribution, renewable energy, utilities, energy storage, nuclear power and evolving clean technologies
  • Industrial and Environmental Infrastructure: recycling facilities, water treatment plants, mining operations, petrochemicals, and manufacturing assets
  • Transportation and Social Infrastructure: toll roads, bridges, tunnels and railways, vehicle-to-grid integration, airports, ports, terminals, maritime logistics, industrial logistics, medical and education infrastructure
“[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)
Over the Last Five Years
 
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
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

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