Eoin Cassidy


Eoin is a partner in our Construction, Infrastructure & Utilities department and a leading member of the Energy, Utilities and Projects team. 

Energy Law is a significant part of Eoin’s expertise. He has acted for developers, investors and funders on the development, financing, acquisition and disposal of a significant number of energy projects and portfolios in Ireland with a focus on renewables. Eoin is recognised as a leading practitioner in this sector.

He also provides advice to clients on construction, planning, environmental regulatory and grid connection for complex infrastructure projects during development, construction and operation.

In contentious matters, Eoin has acted for clients in a number of High Court and Commercial Court proceedings, conciliations and arbitrations representing the interests of employers, contractors and sub-contractors in the resolution of disputes in high-value matters in the energy and construction sectors.

Eoin is the president of the Energy and Environment Commission in AIJA and has been recognised by Who’s Who as an expert lawyer on environmental matters.


  • Energy Law
  • Construction and Engineering
  • Projects (including energy, water and transport)
  • Health & Safety
  • Environmental law
  • Planning
  • Litigation / Arbitration / Conciliation

Representative Matters

  • Acted for the National Treasury Management Agency as controller and manager of the Ireland Strategic Investment Fund on the structuring of an investment with Capital Stage AG for investment in solar projects.
  • Acted for NTR plc. in respect of its successful acquisition of the Bunnyconnellan wind farm.
  • Acted for Element Power Ireland Limited in its successful acquisition of Kilathmoy wind farm.


Chambers & Partners, 2020

Eoin is "practical, commercial and willing to innovate".

Legal 500, 2020

Eoin has a "highly specialised knowledge of the energy infrastructure which would be rare to find in other firms".

Speaking Engagements & Teaching

  • Lecturer on the Law Society’s diploma in Environmental and Planning Law
  • LinkedIn

Areas of Expertise

Construction, Infrastructure & Utilities Dispute Resolution Energy, Utilities & Projects Data Centres

Professional Memberships

Association Internationale des Jeunes Avocats (AIJA)

Irish Wind Energy Association (IWEA)

President of the Energy and Environment Commission in AIJA (International Association of Young Lawyers)


University College Dublin, (BBLS) (Dip. Arb. Law)