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Francisco A Macias

Work +5411 4310 0100
Marval, O'Farrell & Mairal

Work Department

Oil & Gas / Environment / Power.


Francisco A. Macías specializes in oil & gas, power, public services, infrastructure, natural resources, environmental law and protection of foreign investment. His practice is mainly focused on international and local oil & gas, infrastructure and power transactions. He also advises clients on gas and power regulatory matters and a wide range of oil & gas and power contracts.


Francisco has been a partner of Marval, O’Farrell & Marval since 2002. Before joining the firm he worked for the firm of Bazán, Cambré & Orts advising on oil & gas upstream and midstream transactions and environmental matters, from 1994 until 1997. He also worked for BBVA Banco Francés from 1993 until 1994.


English, French, Italian & Spanish.


He graduated from the Law School of the Argentine Catholic University in 1991 and obtained a Post Graduate Degree in International and EC Law from the School of Law of the University of Siena, Italy, in 1993. In 1992 he obtained a postgraduate degree in International Operations from the National Foreign Office Institute of Argentina -ISEN-.



Within: Environment

Marval, O'Farrell & Mairal had a busy year on the project development front, which saw practice head Francisco MacĂ­as advise companies such as Senvion and Total on regulatory and permitting issues relating to renewable energy projects. The firm also continues to be a popular choice for complex environmental litigation, such as MacĂ­as’ representation of Compañía General de Combustibles in three environmental class actions filed by non-profit organisation ASSUPA, which seek remediation for the alleged damage caused by exploration and production activities. The group, working off its market-leading corporate and M&A practice, is also a strong performer in environmental due diligence matters. Senior associate Gabriel Fortuna is another key contact.

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Argentina: Energy and natural resources


Within: Electricity

Particularly prominent on the transactional side, Marval, O'Farrell & Mairal’s power practice also demonstrates strong expertise in project development and regulatory issues. It also sets itself apart through its experience in alternative power matters, such as hydroelectric, nuclear and renewable energy. Among its highlights, energy and natural resources head Francisco Macías, acting together with the banking and public law teams, advised China Gezhouba Group on regulatory and contractual issues related to the $4.7bn construction of a hydroelectric project. The department also includes associate Gonzalo Santamaria, singled out by clients as a ‘very talented up-and-coming lawyer’. Other key clients include China National Nuclear Corporation and General Electric.

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Oil and gas

Within: Leading individuals

Francisco MacĂ­as - Marval, O'Farrell & Mairal

Within: Oil and gas

‘Top-tier oil and gas practice’ Marval, O'Farrell & Mairal’s ‘extremely strong group’ is admired for its ‘impressive roster of clients’ and its ‘consistent involvement in key matters’. The team, which is well balanced between corporate, commercial and contentious work, is best known for its track record in multi-jurisdictional issues and it often leans on other departments within the firm to provide support on complex cases. Among its recent highlights, group head Francisco Macías acted hand-in-hand with the corporate and tax departments to advise BP on a joint venture with Bridas and CNOOC to form Pan American Energy Group. He is also leading the firm’s advice to various Argentine and Chilean clients in connection with several natural gas cross-border transactions; notably, these represent the first energy transactions between Chile and Argentina since 2010. On the contentious side, Macías represented gas distribution utility Litoral Gas in disputes concerning long-term gas supply contracts. Corporate finance partner Ricardo Beller is also a key contact.

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