Hannah Devoy

Practice Areas

Hannah is a Partner in the Construction, Infrastructure & Utilities team at Mason Hayes & Curran. Her practice focuses on complex and high value construction and energy disputes, often with an international component.

Hannah has represented international and domestic clients in prominent construction cases before the Commercial Court. Significant recent cases have involved major PPP infrastructure projects in Ireland, disputes under the Irish public works framework, and complex bond claims, along with other high value construction claims for delay, loss and expense, variations, and defects.

Alternative dispute resolution is a significant element of Hannah’s practice. She has represented international and domestic clients in arbitrations seated in Dublin and abroad, including under ICC and LCIA Rules. She also advises litigants on enforcement and set aside applications under the Arbitration Act 2010, and on bringing applications to stay proceedings to arbitration.

Hannah has represented clients in both making and defending multi-million euro claims in mediation, conciliation, and in adjudication under the Construction Contracts Act. Over the past 3 years, she has acted in claims in adjudication with a cumulative value of over €55 million, and has successfully enforced favourable adjudicator’s decisions before the Irish High Court.

As part of her energy practice, Hannah acts for major electricity generators in obtaining successful outcomes against SEMO under the I-SEM Trading and Settlement Code. In 2019 she represented a successful generator in obtaining a significant win and the first against SEMO since the introduction of I-SEM. Since 2019, she has assisted major generator clients in reversing difference charges imposed upon generators across multiple dispute processes under the Trading & Settlement Code. She regularly advises market participants on the I-SEM Capacity Market Code and acts for clients in disputes against the System Operators. Recently, she secured a successful outcome for a generator client in a Qualification Dispute relating to the T-4 2028/2029 Capacity Auction.