
Matheson LLP‘s energy and infrastructure team covers complex energy, utilities and infrastructure regulatory mandates, as well as project finance, real estate, planning, M&A and construction mandates. The group is a go-to for a diverse, domestic and international client base ranging from large project developers and finance banks, institutional investors and corporate buyers, to state bodies and energy utilities. Expert team head Garret Farrelly has far-reaching expertise in renewables and oil and gas, and has experience leading public sector energy regulatory projects. Recommended lawyers for energy and infrastructure development and financing include Conor Blennerhassett and newly promoted partner Owen Collins, who specialises in drafting and negotiating corporate PPAs, which is a core pillar of the practice. Nicola Dunleavy SC and Ruadhán Kenny are key contacts for energy disputes.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Lawyer & team quality
Client satisfaction: Sector knowledge
Testimonials
Collated independently by Legal 500 research team.
- Garret Farrelly is a standout practitioner. He has a very compelling combination of commanding presence, market knowledge, and a very friendly manner. He is a clear subject-matter expert and has the ability to jump into the detail but also pull your head up from it to see the bigger picture.
- Matheson is my number one choice for energy and natural resources work in Ireland. They are subject matter experts and give clear, straightforward advice that is grounded in practicality. This makes them incredibly user-friendly. They have a full range of specialisms that are needed and are very collaborative between themselves and when we work together.
- It's a big and well-resourced firm for all of our needs. They have a lot of history with the company and can always point us in the right direction.
- Owen Collins is our go-to person on PPAs and other energy-related matters. He knows his stuff.
- ‘Garret Farrelly and Enda Garvey are exceptional legal advisers with strong technical knowledge of the sector in Ireland and commercial sense to get a deal done.’
- ‘Garret Farrelly is a stand-out in his tenacity, attention to detail, and ownership he takes over transactions.'
- ‘The team is highly responsive, accessible, and proactive in anticipating issues before they arise. They demonstrate strong project management skills on complex, multi-jurisdictional matters, coordinating seamlessly across practice areas to provide an integrated service.'
- 'Clients can expect a team that is technically excellent, commercially attuned, and consistently committed to delivering outcomes that support clear, client-led objectives. Ruadhán Kenny, Nicola Dunleavy and Garret Farrelly deserve special mention in this regard.’
- ‘The Matheson team is excellent in the field of energy and natural resources. The team has great commercial knowledge and understanding of the issues that this sector faces and suggests practical and workable solutions to problems.’
- ‘Garret Farrelly, Owen Collins, Conor Blennerhassett are a joy to work with. They are approachable and experts in their field. They listen, offer guidance and resolve an issue quickly.’
Key clients
- Allianz Capital Partners
- Amarenco
- AMP Capital Investors
- An Post
- Antin Infrastructure
- Aramark Corporation
- Aviva Investors
- AXA Master Partners in Infrastructure Equity 1 SA
- Axpo
- BASF
- BBVA
- Biomarin
- BL Energy Ventures Ltd
- Bord na Móna
- Brookfield Multiplex Construction
- Burmeister & Wain Scandinavian Contractor A / S
- Capital Dynamics
- Caterpillar Inc
- Celtic Horizon Offshore Wind Farm Limited
- Cenergise
Work highlights
Advising Bord na Móna on a number of significant and high-profile projects, including its partnership with Amazon to develop an Eco Energy Park in the midlands.
Advising EirGrid in relation to the drafting and negotiation of a complex Connection Agreement which will be used to connect all offshore wind projects in Ireland and a complex and bespoke asset purchase agreement.
Advised the Department of Climate, Energy and the Environment in respect of the design and implementation of a renewable electricity support scheme (RESS-1), which included drafting terms and conditions for the first offshore RESS auction (ORESS-1), supporting drafting the terms and conditions for the second offshore RESS auction (ORESS Tonn Nua, formerly ORESS-2.1) and advising on an ongoing basis with regard to the delivery of projects under the RESS and ORESS auctions held to date.
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Practice head
Garret Farrelly
Other key lawyers
Nicola Dunleavy SC; Conor Blennerhassett; Enda Garvey; Ruadhán Kenny; Owen Collins

