
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.
- '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 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.'
- ‘Garret Farrelly is a stand-out in his tenacity, attention to detail, and ownership he takes over transactions.'
- ‘I value their availability, pleasant and friendly manners, depth of knowledge and market experience. Owen Collins is a key contact on our projects, his communication is clear, advice is structured and helpful in that recommendations and next steps are clearly communicated.’
- ‘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.’
- ‘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 and Enda Garvey are exceptional legal advisers with strong technical knowledge of the sector in Ireland and commercial sense to get a deal done.’
- Owen Collins is our go-to person on PPAs and other energy-related matters. He knows his stuff.
- 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.
- 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.
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 CGN Europe Energy Clearvise AG Close Brothers CMS LLP CNOOC Petroleum Coillte Teoranta Commission for Regulation of Utilities Coöperatieve Rabobank U.A. Credit Agricole Crowley Carbon DBS Bank Ltd Department of Climate, Energy and the Environment DNB Bank ASA Dragados Drogheda Port Company Drumnahough Wind Farm DAC Dublin Waste to Energy DZ Bank e|net Ecopower Limited EDF Renewables Ireland Limited EirGrid plc Elecnor ElectroRoute Encavis Energia plc ENGIE SA Engine de Limited Equinix Equitix Holdings Limited Erova Energy Exolum Aviation Ireland Ltd Export Development Canada First Quantum Minerals Limited First Reserve (part of Blackrock) Flogas Fred Olsen Renewables FuturEnergy Ireland GE Capital General Electric Company Glenough Wind Farm GLIL Infrastructure LLP GMC Utilities Group Limited Greencells GMBH Hamburg Commercial Bank Hanwha Corporation Helios Technology Ltd Hess LNG Hewlett-Packard Highfield Solar IB Vogt GmbH Iberdrola Indaver Ireland Limited ING Bank Inis Offshore Intesa Sanpaolo Iridium Concesiones de Infrastructuras, S.A. Irving Oil Ltd JCD Group JJ Rhatigan Unlimited Company John Laing John Sisk & Son Limited Kajima Partnerships Kanadevia Inova KFW IPEX-Bank Landis + Gyr Liffey Meats Lufthansa Cargo AG Macquarie Mainstream Renewable Power Limited Metlen Energy and Metals (Metka-Egn Limited) Microsoft Corporation MUFG Bank Natwest Markets PLC Nexen Energy ULC NFE Management LLC NGET/SPT Upgrades Limited (part of National Grid) Norddeutsche Landesbank Girozentrale Ocean Winds Ireland Limited Octopus Energy Generation Limited OHLA Ørsted (formerly Brookfield Renewable Ireland Limited) Partners Group (UK) Ltd Pat Smith Engineering Limited t/a PSE Power PGIM Rabobank Ratio Petroleum Ltd Real Assets Investment Management Roche Diagnostics Limited Roscommon County Council Rubicon Capital Advisors Sacyr Saorgus Energy Limited Seaway 7 UK Limited Shannon LNG Sisk Group Smart Wires, Inc Smartest Energy Ltd SMBC SSE plc Statkraft Ireland STEAG Solar Energy Solutions Storm Management NV Sunoco Bantry Bay Terminal Limited Sure Partners Limited Terraform Power Inc The Go-Ahead Group plc The Ireland Strategic Investment Fund (ISIF) TotalEnergies Renewables SAS Tynagh Energy Limited Ulster Bank Uniper Renewables GmbH Vermilion Energy Inc Woodside Energy Zenith Energy
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

