Overview of the Report
The Central Statistics Office (CSO) of Ireland released a comprehensive study titled “Data Centres Metered Electricity Consumption 2025 — Key Findings.” This official national series examines electricity usage by data centres across the country, providing authoritative data for policymakers, industry stakeholders, and researchers interested in energy trends and sustainability.
Key Consumption Figures
In 2025, Irish data centres consumed a total of 7,663 gigawatt‑hours (GWh) of electricity, representing 23 % of all metlessly recorded electricity in the nation. This marks a substantial rise from 2015, when data centres accounted for only 5 % of total metered electricity, highlighting the sector’s rapid growth and increasing energy demand.
Growth Trend Over a Decade
The ten‑year period from 2015 to 2025 saw data centre electricity consumption more than quadruple. The sharp increase aligns with the expansion of cloud services, digital infrastructure, and the relocation of global tech firms to Ireland, attracted by favorable tax regimes and robust connectivity.
European Context and Sustainable Housing Implications
For a pan‑European audience focused on sustainable housing, the report underscores the broader challenge of balancing digital expansion with climate targets. The high proportion of electricity used by data centres intensifies pressure on national grids, influencing the availability and cost of renewable energy for residential sectors. Understanding this dynamic assists housing planners in integrating energy‑efficient designs and considering the indirect impact of data‑intensive services on household energy consumption.
Methodology and Data Sources
The CSO compiled the findings using metered electricity data supplied by the national grid operator, ensuring accuracy and comparability across sectors. The study categorises consumption by data‑centre size, geographic location, and operational characteristics, providing granular insight into where the highest energy loads occur.
Geographic Distribution Within Ireland
Data centres located in the Greater Dublin Area dominate the consumption profile, reflecting the concentration of technology firms and connectivity hubs in the capital region. Smaller facilities in other counties contribute proportionally less but collectively add to the national total.
Energy Efficiency Measures Reported
The CSO notes that many data‑centre operators have begun adopting energy‑efficiency technologies, such as advanced cooling systems, waste‑heat recovery, and renewable power purchase agreements. Despite these efforts, the overall share of electricity from renewable sources within the data‑centre sector remains below the national average, indicating room for improvement.
Renewable Energy Integration Prospects
The report highlights ongoing initiatives to align data‑centre power demand with Ireland’s renewable energy roadmap, including offshore wind projects and grid‑scale battery storage. Successful integration could mitigate the sector’s carbon footprint and free up cleaner electricity for residential use.
Policy Recommendations and Future Outlook
Key recommendations include incentivising renewable energy procurement for data centres, enhancing transparency of energy consumption reporting, and fostering collaboration between the digital and housing sectors to ensure that expanding data‑centre capacity does not compromise sustainable housing objectives. The CSO projects continued growth in data‑centre electricity demand, emphasizing the need for coordinated policy responses.
Publication and Access Details
The study is publicly available on the CSO website, providing open access to the full dataset and analytical commentary for stakeholders seeking detailed evidence on Ireland’s energy landscape.