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Haynes and Boone

Natalia Cosio Ondiviela*

Natalia Cosio Ondiviela*

Foreign Associate


  • Downstream
  • Energy Regulatory
  • Energy, Power and Natural Resources
  • Environmental

WSG Practice Industries


Haynes and Boone
Texas, U.S.A.

*This Haynes and Boone professional is not licensed to practice law in the state of Texas.

Natalia Cosio Ondiviela is a foreign associate in the International Practice Group at Haynes and Boone. Natalia focuses on regulatory compliance in the oil and gas industry in Mexico, advising clients on matters involving the Mexico Energy Reform through a clear understanding of its scope, design, principles, implementation, authorities and relevant players. Her experience covers knowledge of the regulatory conditions required by different energy authorities throughout a project’s life cycle, including a variety of subjects, such as the permitting sequences for onshore and offshore exploration and extraction operations, as well as management and monitoring obligations for license contracts. She also has experience in midstream, downstream and retail legal requirements to obtain permits and operate projects, such as oil and gas pipelines, tank cars and tank trucks, storage facilities, service stations (gasoline, diesel and multimodal stations), and transloading operations, among others. Additionally, Natalia has been involved in conducting internal investigations and due diligence research.

Prior to joining the firm, Natalia was the General Director for Legal Consultancy at the Agency for Safety, Energy and Environment (ASEA) in Mexico City where she provided comprehensive legal solutions for the development of oil and gas projects. During this time, Natalia was engaged in the rulemaking process for setting the new industrial safety and environmental protection standards, together with the safety and environmental management system guidelines, insurance policies, and environmental impact assessment requirements.

Bar Admissions

Mexico, 2015


L.L.M., 2019, Columbia Law School
L.L.B., 2015, Autonomous Technological Institute of Mexico
Areas of Practice

Downstream | Energy Regulatory | Energy, Power and Natural Resources | Environmental | Mexico Energy Reform | Midstream | Offshore Oil and Gas Exploration and Production | Oil and Gas | Regulatory Compliance


Mexico: SENER Releases a Policy on Reliability, Safety, Continuity and Quality for the National Electric System
Haynes and Boone, May 2020

On May 15, 2020, the Ministry of Energy (“SENER”) published a Policy on Reliability, Safety, Continuity, and Quality for the National Electric System (the “Policy”) in the evening edition of the Federal Registry (“DOF”). The purpose of the Policy is to promote the sustainable development of the power industry and guarantee its continuous, efficient, and safe operation for the benefit of users under the principle of Reliability...

Mexico: CENACE Publishes an Order to Suspend Pre-Commissioning Tests of Wind and Solar Power Plants
Haynes and Boone, May 2020

Within the context of the COVID-19 pandemic, the National Center for Energy Control (“CENACE”) notified users of the Market Information System of its “Order to guarantee the efficiency, quality, reliability, continuity and security of the National Electric System, motivated by the recognition of the epidemic of the illness caused by the SARS-CoV2 virus (COVID-19),” (the “Order”), via the Public Area of the Market Information System of its official web

Preventive Measures Issued by the Mexican Ministry of Health Related to COVID-19
Haynes and Boone, March 2020

On March 24, 2020, Mexico’s Ministry of Health issued preventive measures, sanctioned by the President, that must be implemented by the public and private sectors for the mitigation and control of health risks associated with the disease caused by the SARS-CoV2 virus (COVID-19)...

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