

Herbert Smith Freehills LLP
Client SatisfactionA wide range of clients - including major companies, public authorities, and funders operating in the energy, telecoms, infrastructure and mining sectors - regularly turn to Herbert Smith Freehills LLP for for for advice on public procurement, contentious-administrative cases and sanctioning proceedings. Practice head Iria Calviño excels in administrative litigation, and has a wealth of experience in public law matters at the domestic and European level. José Ramón Mourenza is noted for his expertise in public procurement and contentious appeals, with a focus on the energy and mineral resources sectors. Esther Lumbreras is a key contact for major corporations, investment banks, and public entities.
Testimonials
Collated independently by Legal 500 research team.
‘Great team led by Iria Calviño with unique expertise in the energy sector.’
‘It is a team with unique technical knowledge and a close-knit team that allows them to provide solutions to complex situations.’
‘They are commercial and look for practical solutions.’
‘Herbert's practice is characterised by its thoroughness and vast knowledge of the details of energy sector regulations, and in this sense by its ability to propose alternative ways to address problems to clients.’
‘José Ramon Mourenza is one of the leading figures in the sector and is always available to his clients. Esther Lumbreras is a rising lawyer with a high level of experience in administrative litigation.’
'Precise knowledge of administrative procedures and the general functioning of the public administration, not only from a theoretical but also from a practical approach.'
Key clients
- Asociación de Comercializadoras Independientes de Energía
- HidroCantábrico Distribución Eléctrica
- Finerge Europe
- Berkeley Minera España
- Verdalia Bioenergy Spain
- Grupo ASV
- Quercus Real Assets Limited
- Magnum Industrial Partners
- Asterion Industrial Partners
- Sociedade para o desenvolvemento de Proxectos Estratéxicos de Galicia
- Interogo Holding
- ACCEM
- IGNIS
Work highlights
- Advised Ignis on contentious-administrative appeals against several Orders approved by the Ministry for the Ecological Transition and the Demographic Challenge establishing the operation remuneration for cogeneration plants from 1 July 2022 to 31 December 2022.
- Advising Berkeley Minera España on all the legal aspects related to its uranium mining projects in Spain.
- Advising Asociación de Comercializadoras Independientes de Energía on contentious-administrative appeals before Spanish Courts.
Lawyers

Practice head
The lawyer(s) leading their teams.
Iria Calviño