Feilim O’Caoimh | Fieldfisher
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Professional background

Professional background

I am a commercial lawyer with over 20 years’ experience advising international and domestic clients on commercial contract arrangements, and have earned a name as a leading individual in the field of renewable energy development.

As head of Fieldfisher LLP (Ireland)’s Corporate and Renewable Energy Unit, I advise commercial clients on all aspects of their business arrangements.  I also lead our Renewable Energy offering, and have particular experience in the areas of wind energy (both onshore and offshore), solar, energy storage and biomass. 

I have extensive experience in commercial contracts, outsourcing arrangements, shareholder arrangements, corporate governance, M&A transactions and venture capital transactions. 

I have particular expertise in the area of renewable energy where I advise on project finance, energy regulatory issues, project sales and acquisitions, and joint ventures. My team has also won a number of awards for advice in the renewable energy sector including 'law firm of the year' in the 2017 Corporate INTL Global Awards.

I seek to gain a clear understand my clients’ businesses so as to put myself in the best position possible to provide them with practical and commercial ‘real world’ advice.

I strive to communicate in clear and unambiguous language. I never sit on the fence.

My experience as a commercial lawyer focusses on medium and large corporates operating domestically and internationally in sectors such as retail, manufacturing, technology, digital services, logistics and security.

My experience in the Renewable Energy sector sees me advise banks, developers (both private and semi-state), investors and other key stakeholders operating in the market. 

The transactions I lead regularly require input from experts across the firm. This involves careful team management across the various disciplines involved, in many cases including our experts in data protection, employment and property.  My routine is to establish clear and regular reporting lines so that all team members understand roles, responsibilities, deadlines and most importantly of all, the client’s objectives.

Awards & recognition

Awards & recognition

Legal 500
Michael provides exceptional service and commitment to achieving the outcomes their client seeks.
Chambers Europe 2022
Feilim O’Caoimh handles corporate and asset transactions as well as joint ventures, with a particular focus on wind energy projects. Clients say: "He is very commercial and brings a huge amount of experience, so he is not just theoretical - he solves problems and is a good negotiator."

Authored pieces

All Resources
A glowing lock icon is centered against a background of binary code (1s and 0s), symbolizing digital security. The binary code is displayed in horizontal lines, with shades of blue and purple creating a dynamic, futuristic appearance.
Technology and Data
Insight

Harmonised Standards under the European Accessibility Act: An Introduction

19.06.2025
As of 28 June 2025, certain digital products placed on the market and/or digital services provided to consumers must comply with the European Accessibility Act (EAA). Non-compliance could lead to severe consequences, such as hefty fines, recalls, prohibitions, legal action and/or reputational damage. Read more about the specific consequences of non-compliance in several EU member states via the following link.
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Two people, one in a dark suit and the other in a light suit, are seated at a table. One person is holding a pen and pointing to a document on the table, while the other person is pointing at the same document. The scene suggests a discussion or review of the document.
Data and Privacy
Insight

Understanding the European Accessibility Act: Risks of non-compliance and key authorities

02.05.2025
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Two large heavy-duty trucks positioned on a rocky construction or mining site. The trucks, facing away from each other, show dusty tires and an open bed, surrounded by a landscape of rocks under a blue sky with scattered clouds.
Press Release

Fieldfisher acts for SigmaRoc on US$1.1bn reverse takeover, £200 million fundraising and re-admission to AIM

23.11.2023
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A metal pipeline marked with "H2" and a gauge is shown running through a green grassy field. Wind turbines are visible in the background under a clear blue sky, indicating renewable energy.
Insight

Shaping Europe's hydrogen economy

18.10.2023
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Insight

Fieldfisher contributes to Chambers Alternative Energy & Power 2023 Global Practice Guide

22.08.2023
This year's guide features contributions from Fieldfisher's German, Irish, Dutch and Spanish energy experts.
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What others say…

Legal 500
Michael provides exceptional service and commitment to achieving the outcomes their client seeks.
Chambers Europe 2022
Feilim O’Caoimh handles corporate and asset transactions as well as joint ventures, with a particular focus on wind energy projects. Clients say: "He is very commercial and brings a huge amount of experience, so he is not just theoretical - he solves problems and is a good negotiator."