YEARBOOK & DIRECTORY

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Sunday, 17th May 2026

Farrelly, Garret


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Firm: Matheson LLP
Position: Partner, Energy and Natural Resources Group and Projects and Infrastructure Group
Address: 70 Sir John Rogerson's Quay Dublin 2
Phone: +353 1 232 2074
Email: garret.farrelly@matheson.com
Personal URL: https://www.matheson.com/people/garret-farrelly

Special Areas:

Garret is a partner and head of both Matheson's Energy and Natural Resources Group and Projects and Infrastructure Group. Garret is also chair of Matheson's ESG Advisory Group.

He advises on all aspects of projects and project financing, from PPPs to privately-financed electricity, oil, and gas field developments and privatisations as well as electricity, gas and telecommunications network infrastructure. Garret specialises in particular in the areas of electricity and gas market regulation and trading. Garret's experience also includes project development, M&A and financing in the conventional and renewable electricity sectors as well as the mining and upstream / downstream oil and gas sectors.

Deals and Awards:

Garret is consistently listed as one of Ireland's leading Energy lawyers, including in leading legal international directories such as Legal 500 and Chambers Europe. Garret is listed in Energy Ireland’s "Who's Who in Irish Energy" (Energy Ireland Yearbook 2017, 2018 and 2019).

Career:

Energy and Natural Resources

Advising EirGrid and SONI on all aspects of the I-SEM project which is the new wholesale electricity market arrangement for Ireland and Northern Ireland. Matheson's role involved drafting and advising on the new trading rules, the new capacity market code, the new grid code, the new trading rules for the day ahead and intraday markets in I-SEM as well as drafting amendments to EirGrid’s operational agreements necessitated by I-SEM.

Advising Vermilion Energy Inc.'s acquisition (valued at over €1 billion) together with a Canadian pension fund of Shell's interest in the Corrib gas project. We have advised Vermilion Energy Inc. since 2008 when they first invested in the Corrib gas project. We are also retained by major international players in the market such as CNOOC, ExxonMobil and Woodside Energy.

Advising EirGrid and SONI on all aspects of the I-SEM project which is the new wholesale electricity market arrangement for Ireland and Northern Ireland. Matheson's role involved drafting and advising on the new trading rules, the new capacity market code, the new grid code, the new trading rules for the day ahead and intraday markets in I-SEM as well as drafting amendments to EirGrid’s operational agreements necessitated by I-SEM.

Advising Partners Group (UK) Limited, a global private equity firm, on its acquisition of an interest in the Greenlink Interconnector, a project to construct a 500MW subsea electricity interconnector between Ireland and Great Britain.

Advising EirGrid and SONI on all aspects of the I-SEM project which is the new wholesale electricity market arrangement for Ireland and Northern Ireland. Matheson's role involved drafting and advising on the new trading rules, the new capacity market code, the new grid code, the new trading rules for the day ahead and intraday markets in I-SEM as well as drafting amendments to EirGrid’s operational agreements necessitated by I-SEM.

Advising Irving Oil on the acquisition of Tedcastles Oil Products Unlimited Company and its associated subsidiaries.

Projects and Infrastructure

Advising Exolum Aviaci?n on all aspects of its successful tender for the design, build and operation of new aviation fuel terminal and pipeline infrastructure at Dublin Airport under a long term services concession agreement with airport operator daa plc.

Advising a large international conglomerate on the development of a 200MW Battery Energy Storage System project in the mid-west region of Ireland (this is the one of the largest projects of its kind in Europe).

Advising the National Broadband Ireland project company (backed by Granahan McCourt investments and other investors) on its successful bid to design, finance, build and operate a high speed broadband network serving over 1 million people across Ireland (one of the most ambitious and wide-reaching State-backed broadband interventions in the world).

Publications:

He is a frequent speaker at energy and infrastructure conferences and regularly contributes articles to specialist publications.

Qualifications:

University College Dublin (BCL)

Qualified as a solicitor in Ireland

Qualified as a solicitor in England and Wales (non-practising)