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Brigard Urrutia

Work +57 1 346 2011
Bogota, Cali

Guillermo Tejeiro

Work (+57-1) 346 2011 Ext. 8796
Brigard Urrutia

Work Department

Environment and Sustainable Business; Renewable Energy and Energy Efficiency; Natural Resources and Environmental Law


Senior Associate / Head of the Environment and Sustainable Business Team


Head of the Environment and Sustainable Business Team and member of the Renewable Energy and Energy Efficiency Team of Brigard Urrutia, Mr. Tejeiro holds a J.D and a Master's Degree in Law from the Universidad de los Andes (Colombia), an LLM in Environmental and Energy Law from K.U Leuven (Belgium), a postgraduate degree on Environmental Law from UFGRS (Brazil), and a postgraduate degree on Electricity and Gas Regulation from Universidad Externado de Colombia (Colombia). 

Mr. Tejeiro advises national and international clients in matters related to sustainability of projects and activities, including the representation of clients in environmental litigation, advising on environmental tax benefits, and structuring projects and green business. Regarding renewable energy, Mr. Tejeiro advises national and international clients in connection with renewable energy and energy efficiency projects from a regulatory perspective, particularly environmental and electricity law.

He has served as legal counsel, researcher and lecturer in matters related to environmental law and renewable energy, occupying positions within NGOs, research institutes and law firms in Europe and Latin America. He is author of several publications in Colombia and abroad in environmental and renewable energy law and has been appointed as lecturer in several universities across Colombia.


English, Portuguese and Spanish


Lawyer from Universidad de los Andes, he holds a Master's in Law from the same university. He also holds an LL.M. Programme in Environmental and Energy Law from Katholieke Universiteit Leuven – K.U Leuven and a postgraduate degree in Environmental Law from Universidade Federal do Rio Grande do Sul – UFRGS and a postgraduate degree in Electric Energy and Gas from Universidad Externado de Colombia. 



Energy and natural resources

Within: Rising stars

Guillermo Tejeiro - Brigard Urrutia

Within: Energy and natural resources

Brigard Urrutia receives praise for ‘knowing how to work as a team and ensuring that the client gets all of the knowledge and support required from many different partners as needed’. Managing partner Carlos Umaña and senior partner Carlos Urrutia Valenzuela head the 11-strong practice, which also includes natural resources director (and head of the Venezuela desk) Marianna Boza and senior associate Guillermo Tejeiro; both ‘stand out’. Directors of the infrastructure and the renewable energy practices Claudia Navarro and Manuel Quinche are also well regarded. The team represented Ashmore Asset Management in the negotiation of an engineering, procurement, and construction (EPC) and an operation and maintenance (O&M) agreement with Morelco, to build and operate a regional transmission line in La Guajira. Other highlights encompassed advising Faro Energy on conducting its renewable energy projects and advising Sloane on structuring the EPC and PPA agreements for a thermal generation project. In mining, the practice is ‘more dynamic than other firms and has a strong tradition in all areas of law, which is very relevant’; it is assisting new foreign mining investors including Newmont, Newcrest, Fortescue, High Power Exploration, Hochschild, La Mancha and First Quantum. Oil and gas-related activity included advising ONGC Videsh on day-to-day matters related to E&P contracts concerning several onshore and offshore oilfields. The team is also representing Enagas to develop the Pacific Coast regasification plant. Ecopetrol, Frontera Energy, Hades Energy Holding and Inversiones Colombianas Arauco are also on the client roster.

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