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Matheson LLP

Environment

Europe Guide 2026 : Ireland

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Matheson LLP

Rankings

About

Provided by Matheson LLP

Matheson is recognised as a market-leading advisor with energy and natural resources lawyers who are recognised as leaders in their field and who act for domestic and international clients on all aspects of energy law, including renewable energy, energy-related mergers and acquisitions, energy regulation, development and/or project finance of energy projects, electricity and gas networks, mining, and oil and gas exploration.

We pride ourselves in being able to provide legal advice covering the entire lifespan of an energy or natural resource project, from planning approval to decommissioning. Additionally, our practice has the depth of resource and personnel to be able to lead complex and extensive energy-related transactions and our dedicated energy lawyers fully understand the technical and commercial issues in this regulated and complex sector.

Our energy sector specialists have extensive experience in oil and gas field development, electricity generation and supply projects, electricity and gas networks, renewable energy, market structures, regulatory reform and privatisation. Our lawyers have played a leading role in the establishment of the Single Electricity Market (SEM) as well as the implementation of EU legislation impacting on the energy sector in Ireland, in particular the Third Energy Package, the Renewables Directives and the Energy Efficiency Directive.

Chambers Review

Provided by Chambers

Environment - Ireland

Band 3

What the Team is Known For

Matheson has a full-service energy practice that handles corporate and asset transactions, as well as project finance mandates. The team is well versed in matters concerning wind and solar farms, as well as battery storage systems. The lawyers are experienced in negotiating and reviewing complex power purchase agreements. The firm is well placed to assist major international clients with cross-border mandates. Team members also assist clients with environmental permitting issues.

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Strengths

Provided by Chambers

  • The team at Matheson is very prompt at responding and providing thorough advice.

    Environment respondentEurope

  • The team has a very solid understanding of the regulatory environment, which is crucial to making decisions, and also has an ability to assess risk and propose mitigation measures.

    Environment respondentEurope

  • Matheson provides great service levels, responsiveness and deadline management.

    Environment respondentEurope

  • The advice is targeted and relevant. The lawyers are available and responsive, and they are very good at reading what the client needs.

    Environment respondentEurope

  • There's a culture of client service in the firm that is just fantastic.

    Environment respondentEurope

Notable Practitioners

Provided by Chambers

  • Garret Farrelly
    Garret Farrelly

    Garret Farrelly

    Garret Farrelly's broad practice covers the transactional and regulatory aspects of large-scale energy projects and green energy transitions. He acts for international financial institutions as well as domestic developers.

    • He is super user friendly, very collaborative and jumps into the detail, while being able to pull your head out of the detail and provide perspective.

      Environment respondentEurope

    • Garret Farrelly is really well respected and well plugged into the industry.

      Environment respondentEurope

    • He is the consummate professional with excellent communication skills.

      Environment respondentEurope

    • He's brilliant. He's so good at responding to you.

      Environment respondentEurope

    • Garret Farrelly understands our requirements and has provided strong advice and guidance on key aspects of our business.

      Environment respondentEurope
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  • Nicola Dunleavy
    Nicola Dunleavy

    Nicola Dunleavy

    Nicola Dunleavy acts for a host of private and public clients, including government departments, developers and investors, on environment and planning issues, including renewable energy sector permit issues.

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  • Owen Collins
    Owen Collins

    Owen Collins

    Owen Collins garners impressive recognition from clients for his energy practice. He acts for energy companies, investors and infrastructure operators on a range of regulatory and transactional energy matters, as well as advising on power purchase agreements and judicial reviews.

    • His insights into the Irish market are invaluable.

      Environment respondentEurope

    • Owen Collins combines deep legal expertise with a strong grasp of the Irish energy market, which brings both legal depth and commercial insight to every matter.

      Environment respondentEurope

    • Owen Collins is very personable and easy to speak to.

      Environment respondentEurope

    • He is super knowledgeable and a great help. He is always up to speed with market developments.

      Environment respondentEurope
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Ranked Individuals at Matheson LLP (3)

Ireland

Members

Provided by Matheson LLP

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