Von Wobeser y Sierra, SC has established itself as regulatory counsel of note for projects spanning oil and gas, electric power and renewable sources, advising clients on navigating Mexico’s evolving legal framework and adapting to energy transition and decarbonisation initiatives. Edmond Grieger is the head partner in the firm’s energy practice, with specialisms in infrastructure project development and project finance, and a particular focus on renewables. Ariel Garfio Vázquez co-leads the practice and has extensive expertise in contract negotiations and providing counsel for oil and gas, power and mining projects. Luis Burgueño is involved in energy projects from a transactional and M&A perspective, working alongside fellow partners Alberto Córdoba and Raymundo Soberanis. The practice benefits from robust associate support from Roberto Flores, who advises on day-to-day environmental and regulatory compliance, with the team being further strengthened during 2024 with the arrival of associates Edmundo Berumen and Héctor Sánchez. Former associate Alejandro Beas left the firm in October 2025.
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Testimonials

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  • ‘They provide excellent attention; the client service is wonderful. They have a highly trained team with an outstanding level of experience and knowledge.’
  • ‘The firm’s lawyers stand out for their commitment to excellence and building strong client relationships. Their differentiation lies in combining direct industry experience with a proactive approach that ensures we as clients are always one step ahead.’

Work highlights

Advised New Fortress Energy (through its SPV named Mexico FLNG) on the development and operation of significant projects within the capital-intensive infrastructure and energy market, including a $2 billion Floating Liquefied Natural Gas project, complementing the offshore natural gas liquefaction plant near Altamira, Tamaulipas.
Practice head

Edmond Grieger; Ariel Garfio Vázquez

Other key lawyers

Luis Burgueño; Alberto Córdoba; Raymundo Soberanis; Roberto Flores; Alejandro Beas; Edmundo Berumen; Héctor Sánchez