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Vinson & Elkins LLP

1001 FANNIN STREET, SUITE 2500, HOUSTON, TX 77002-6760, USA
Work +1 713 758 2222
Fax +1 713 758 2346
Austin, Beijing, Dallas, Dubai, Hong Kong, Houston and 10 more

John B Connally

Work +1 713 758 3316
Vinson & Elkins LLP

Work Department

Energy Transactions


John B.'s practice involves the representation of clients in domestic and international mergers and acquisitions, project development and finance transactions, private equity investments, joint ventures, and a variety of energy matters. He has worked on transactions in more than 20 states in the United States and more than 25 countries throughout the Americas, Asia, Europe, and Africa.


  • Board of Directors, Texas Law Review Association
  • Board of Advisors, Texas Journal of Oil, Gas and Energy Law
  • Board of Directors, Association of International Petroleum Negotiators (AIPN)
  • Member, Advance Team, The University of Texas M.D. Anderson Cancer Center
  • Advisory Board, Center for Global Energy, International Arbitration and Environmental Law, The University of Texas School of Law


John B. graduated from Vanderbilt University, B.A. in 1994, and The University of Texas, J.D. with High Honors in 1997 (Fraternities: Chancellors, Order of the Coif, and Phi Beta Kappa). Admitted to Texas Bar in 1997 and New York Bar in 2008.

United States: Finance

Project finance

Within: Project finance

Vinson & Elkins LLP’s ‘very responsive, professional and experienced’ practice assists clients with a range of project types, including conventional power, renewable and alternative energy, and oil and gas. ‘Very involved’ practice heads John Connally and James Cuclis, who are based in Houston, are supported by ‘confident, capable associates’. On the sponsor side, the Washington DC-based Katy Gottsponer advised Gas Natural Atlantico on the $535m financing of its Colón LNG-to-power project in Panama, which involved a loan from a syndicate including Bancolombia and International Finance Corporation. The pair also acted for Brookfield Renewable Energy on its $500m bond offering to refinance its 610MW Bear Swamp hydroelectric facility in Massachusetts. The Washington DC-based John Decker assisted a subsidiary of Brookfield Renewable Energy with financing its acquisition of two Pennsylvania hydroelectric power projects. On the lender side, New York-based partners Karen Smith and Todd Triller advised Ares Capital Corporation on a mezzanine loan to Panda Power Fund to finance a $100m Virginia power facility. Other key figures in Houston include Kaam Sahely and senior associate Alan Alexander. Mark Spivak left to join Baker Botts L.L.P..

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United States: Industry focus

Energy transactions: oil and gas

Within: Leading lawyers

John Connally - Vinson & Elkins LLP

Within: Energy transactions: oil and gas

Vinson & Elkins LLP’s largely Houston-based practice is adept at ‘large, complex energy transactions’, particularly in the upstream space. Stephen Gill and Douglas McWilliams advised Memorial Resource Development on its $4.4bn merger with Range Resources, while Keith Fullenweider and Creighton Smith acted for Vantage Energy in its $2.7bn purchase by Rice Energy. As well as M&A, the team handles project finance: Fullenweider and John Connally, who head the group along with James Cuclis, assisted Quantum Energy Partners with a $1bn equity investment in LINN Energy to finance future oil and gas acquisitions and developments.

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Energy: renewable/alternative

Within: Energy: renewable/alternative

Vinson & Elkins LLP’s department is led by John Connally and James Cuclis in Houston. Project finance is the team’s key strength. Katy Gottsponer (Washington DC) and Brett Santoli (New York) advised Brookfield Renewable Energy on a $500m bond offering to refinance its 610MW Bear Swamp hydroelectric facility in Massachusetts. Investor clients include Goldman Sachs. In February 2017, Mark Spivak joinedBaker Botts L.L.P..

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