Photo, Alejandro C. Mesa-Neira

Alejandro C. Mesa-Neira

Baker & McKenzie S.A.S.


Alejandro Mesa is a lawyer graduated from Universidad de Los Andes. He has focused his practice in matters related to the Energy, Mining and Infrastructure sectors.

He is a highly regarded practitioner in project finance transactions, being recognized for his advisory and representation work for American and European companies in the Colombian market. Due to his experience working with Colombian government entities, he has advised major clients seeking to participate in government procurement procedures or to structure distribution channels in Colombia.

He joined Baker McKenzie in 1995 and became a partner in 2008.

Practice Focus

Alejandro has over 20 years' experience in energy and mining law, with a focus in oil and gas, power generation and transmission.

Representative Legal Matters

  • Advised the Nogal Asesorías Financieras / Frontino Gold Mines, on an asset sale of a gold mine in Colombia by a company undergoing liquidation.

  • Advised international company Coal Partners Limited on the successful acquisition of mineral interests in the province of Cesar for steam coal exploration.

  • Advised New Age Exploration Limited on the successful acquisition of three sets of mineral interests for steam and metallurgical coal exploration.

  • Advised Total on the sale of its 5.2% share in Ocensa (the largest and most important gas pipeline in Colombia) in the context of a collective sale by Total, Talisman and CEPSA to Advent International, a private investment fund.

  • Advised Southern Cross on the acquisition by Entrella International Energy Services Ltd. (Estrella) of San Antonio Internacional Co. Inc. (SAI), a company engaged in the provision of services and qualified personnel for oilfield exploration in Colombia.

  • Advised Lewis Energy Colombia on the sale of the Guachiria block by Lewis Energy Colombia to Ingecontrol.

  • Advised Lewis Energy Colombia on the regulatory analysis and subsequent structuring of a commercialization agreement of crude oil with P1 Energy, which enabled Lewis to sell to Ecopetrol and other crude oil purchasers P1 manufactured crude under the Guachiria association agreement.

  • Advised ONGC Videsh regarding the measures adopted by ONGC in connection with the controversy with Petrodorado pursuant to the JOA for the CPO-5 block.

  • Advised Nexen Petróleo on the structuring, bidding process and final negotiation of a drilling agreement for the drilling of shallow wells by Nexen Petroleum.

  • Acted for CB&I as outside counsel in the execution of the EPC agreement for the expansion of Cartagena refinery (a project worth USD 5.5 billion).

Professional Honors

  • Listed as expert in Power and Oil Law by Chambers Latin America, Chambers Global and The Legal 500

Professional Associations and Memberships

  • Commercial Law Bar Association (Colegio de Abogados Comercialistas) - Member


  • Colombia (2002)


  • University of Los Andes (M.C.L., Honors) (1997)


  • English
  • Spanish
Alejandro is a frequent speaker in Contract Law training sessions for non-lawyer professionals, and was certified by Siemens AG to conduct this kind of training sessions for its Latin American employees.