Jonathan Castelan

Jonathan Castelan focuses on energy and infrastructure transactions that support large, complex projects across evolving markets worldwide and industries. His work centers on guiding companies through contractual, commercial, and strategic decisions tied to energy transition initiatives, traditional energy assets, and infrastructure development while balancing risk, compliance, and long-term operational goals.

Jonathan completed a B.A. in 2002 at Southern Methodist University, building a foundation in analytical thinking, business-focused studies, and leadership skills. He later earned a J.D. in 2006 from The University of Texas School of Law, where his legal training prepared him for sophisticated transactional work and regulatory analysis.

Jonathan advises clients across energy infrastructure, energy transition, and traditional oil and gas matters in diverse markets and jurisdictions. His practice includes carbon capture, utilization, and sequestration, direct air capture, hydrogen development, renewable fuels, and sustainable aviation fuel projects, with an emphasis on construction contracts, supply arrangements, offtake structures, acquisitions, divestitures, and joint ventures.

Jonathan has guided public and private companies on landmark carbon management and low-carbon initiatives across the United States and key regions successfully. He supports clients pursuing emissions reduction, infrastructure expansion, and new technology deployment by aligning commercial terms with project financing needs, regulatory requirements, and long-term operational certainty outcomes.

Jonathan Castelan also advises on power, battery storage, midstream, upstream, and large infrastructure projects involving complex commercial frameworks nationwide. His experience spans pipelines, terminals, renewable facilities, and transportation assets, helping stakeholders structure agreements that address construction risk, cross-border considerations, financing alignment, operational certainty, and evolving market demands.

Jonathan’s work has been recognized within the legal industry for its focus on modern energy challenges and execution. He was named to Best Lawyers: Ones to Watch 2024 – Energy Law, reflecting consistent involvement in innovative projects that advance cleaner energy systems and support clients navigating significant regulatory and commercial change.

Law Office Affiliations

• Partner, Clifford Chance
• Member, State Bar of Texas

Licensed State

• Texas

Education

• University of Texas School of Law
  Juris Doctor (JD)
• Southern Methodist University
  Bachelor of Arts (BA)

Awards & Badges