Irish High Court Hears Challenge to CRU Data Centre Grid Connection Rules

Ireland's High Court last month heard a challenge from three environmental groups against a December decision by the Commission for Regulation of Utilities (CRU). The CRU allowed new data centres to connect to the grid, provided they supply as much electricity as they use after six years. Additionally, 80% of this supplied electricity must come from renewable sources, implying the remaining 20% could be fossil fuels.

Friends of the Earth, Friends of the Environment, and ClientEarth argue this directive breaches domestic climate legislation and the EU Energy Efficiency Directive, potentially expanding fossil-fuel emissions. This follows a five-year pause on new data centres due to energy concerns. Data centre electricity consumption in Ireland rose from 5% to 22% of the State’s total output between 2015 and 2024, projected to exceed one-third within a decade. Globally, data centre electricity use grew 12% annually since 2017 and is expected to double by 2030.

Matt O’Neill of the Institute of International and European Affairs views the 80% renewables target as a positive step, linking data centre growth to clean energy, despite short-term fossil fuel use. He emphasizes aligning data centre development with Ireland’s climate and economic goals, suggesting new centres underwrite wind and solar projects and match demand with supply. Tanya Cawley of AJ Products deems current demands unsustainable, citing insufficient renewable infrastructure. She advocates for carbon offsets and data centres generating their own sustainable energy, noting Pure Data Centres Group in Dublin already operates off-grid using natural gas with biomethane/HVO capacity. Stakeholder collaboration is crucial for balancing growth and sustainability.