Led by Colm Ó hUiginn, the energy team at Dentons Ireland LLP advises on complex project development, finance, and M&A mandates for large sponsors and lenders.

A&L Goodbody LLP‘s energy, infrastructure and natural resources group stands out for its broad practice, which handles large, cross-border and complex mandates related to construction, finance, M&A support and energy regulation. The team is active across a range of technologies and specialisms, spanning onshore and offshore wind, solar, biomass, waste to energy, oil and gas and energy storage. Established expert Ross Moore leads the team and specialises in regulatory advice on electricity, gas and renewable energy projects, as well as utility and semi-state energy transactions. John Dallas is an active and experienced practitioner sought out for advice on the development, financing and construction of large energy and infrastructure projects, as well as on acquisitions, sales and joint ventures within the sector. Financial institutions, institutional investors and developers seek out David McElroy for finance advice on interconnectors and renewable and conventional energy projects. Another key practitioner is Aisling O’Donoghue.

Arthur Cox‘s energy, renewables and natural resources team is instructed on large and complex energy deals for large project developers and operators. Niamh McGovern spearheads the offering and is across a range of regulatory, commercial, project development and M&A mandates related to renewable energy and conventional electricity generation. Danielle Conaghan, who leads the environmental and planning group, specialises in the energy sector, and Aaron Boyle‘s expertise in infrastructure and construction projects makes him another key contact. Amy McDermott is a go-to for energy M&A, while Ciara Buckley is recommended for handling the financing aspects of large energy deals, and James Downey has strength in energy regulatory matters.

With particular expertise in complex renewable energy transactions and projects, Mason Hayes & Curran LLP‘s team is highly capable across the project finance, development, acquisition and operation of thermal and renewable electricity generation and storage systems. It also has experience acting on electricity and natural gas network regulatory matters and representing generators in energy disputes. Eoin Cassidy leads the energy team, with extensive experience acting for developers, investors and funders on energy project developments, financings, acquisitions and disposals. Construction team head Rory Kirrane SC‘s broad practice covers regulatory, contentious and project matters related to capacity and supply issues. David Gunn and Hannah Devoy are other key practitioners.

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.

McCann FitzGerald LLP‘s energy and natural resources team handles a wide array of mandates for project sponsors, lenders and, notably, state bodies. The team is led by the ‘exceptional’ Valerie Lawlor, who has significant expertise acting in large transactions, with specialisms in M&A, IPOs and regulatory frameworks. Rory O'Malley also has a strong track record in significant renewable energy transactions. Peter McLay joined the team in 2025, bringing in-depth knowledge of Irish and EU law and regulation applying to energy projects in the electricity, natural gas and petroleum sectors. Brendan Slattery and Sinéad Martyn are also highly active team members.

Acting for leading energy companies, developers and semi-state bodies, Beauchamps LLP is well-positioned to support with RESS, DS3 and corporate PPAs, EPC and O&M contracts and project finance work, as well as due diligence and acquisitions of energy projects. With a renewable energy specialism, the group focuses on wind, solar, energy storage and green hydrogen matters, which team head Ainsley Heffernan has a wealth of experience representing clients in, notably with the acquisition and disposal of projects and joint ventures in the sector. Stuart Conaty is proficient in construction, corporate and planning and environmental law. Fiona Egan and Anne Maree Igoe‘s arrival in late 2024 expanded the group’s capabilities on energy projects and energy real estate respectively.

The energy team at Eversheds Sutherland frequently assists public energy companies and power developers on policy and regulation, project development and construction matters, and corporate transactions. With a specialism in solar development, Seán Scally leads the team, and guides clients through the development, operation, regulation and power trading of wind and solar farms. Promoted to partner in 2025, Chelsey O’Doherty excels in renewable energy developments, construction work and M&A, with noted expertise in offshore wind projects.

William Fry LLP‘s ‘exceptional’ energy team represents leading players in the Irish energy market on a wide range of mandates, notably acting for the transmission system operator. The team has recently received a growing number of mandates related to offshore wind, security of supply, data centres and corporate PPAs. With an ‘unrivalled level of experience’, Fergus Devine leads the team and has expertise advising on regulatory issues and bespoke system services and emergency generation arrangements. Co-head Máire O’Neill handles corporate transactions in the energy sector. Jarleth Heneghan and newly appointed partner Colm Booth are also key team members.

Addleshaw Goddard‘s energy and infrastructure team is reputed for its expertise in power generation. At the helm is Gavin Blake, who provides developers, funders and investors with the full range of advice on wind farm and other projects. Joseph O’Rourke joined in 2025, strengthening the team’s energy M&A offering. Phelim McGeady is another key lawyer with a strong presence in the energy sector.

Byrne Wallace Shields LLP‘s cross-departmental group handles a range of traditional energy and renewable energy mandates, including M&A, project financings, project developments, EPC agreements and notably, PPAs. Solar work forms a core part of the practice, however the team also advises clients operating in the wind, biogas, battery storage and hydrogen spaces. Fergal Ruane leads the offering, with a strong track record in construction and public procurement law matters within the energy sector.

Leveraging its strong international network, DLA Piper Ireland LLP advises on large and often cross-border transactions in the Irish market. Key components of the offering include project financing and energy regulatory matters. Project finance team head Seán McGrenaghan has amassed significant experience advising on large energy financings. William Marshall spearheads the energy regulatory practice, and balances a busy workload for project developers, funders, sellers and purchasers of energy assets. Marshall has notable specialisms in conventional and corporate PPAs, the SEM and regulatory disputes.

Fieldfisher is a prominent adviser to semi-state entities and private developers on renewable energy mandates, particularly related to onshore wind and solar. Commercial lawyer Feilim O’Caoimh, who leads the team, is an expert in project finance and construction matters, and joint ventures. With in-depth regulatory knowledge, Elaine Traynor is adept at conducting due diligence and advising developers on the sale and purchase of renewable energy projects. Peter O’Neill is another core team member who joined in late 2024.

With a growing focus and specialism in offshore wind, Philip Lee LLP is reputed for its expertise in energy, planning, construction and M&A work. It also is active in onshore wind, solar farm and battery energy storage projects. Head of the climate and environment group Alice Whittaker is a key adviser on renewable energy projects, leading on regulatory due diligence. Newly promoted partner Niall Donnelly leads the team’s energy focus specifically, and focuses on energy transactions, trading and regulatory matters, and is highly proficient in PPAs. Lev Gantly is also experienced in renewable energy project transactions.

The energy team at Pinsent Masons LLP covers commercial, project and regulatory matters, and is especially well-positioned to advise on novel electricity offtake and energy trading contracts. The team is jointly led by Garrett Monaghan, who has expertise in corporate PPAs, hydrogen and solar; and Richard Murphy, who is an expert on energy regulation and policy, especially related to storage and onshore and offshore wind. Kevin Collins‘s expertise lies at the intersection of real estate, planning and energy regulation, making him a go-to for large projects.