Irish datacenters now guzzle 23% of the country's electricity
Ireland's datacenters consumed 23% of the country's electricity in 2025, rising 10% from 2024 despite restrictions on new grid connections.
Ireland's datacenters now account for nearly a quarter of the country's metered electricity consumption. Their share rose to 23 percent in 2025 after passing 20 percent in 2023 and 14 percent in 2021 – up from just 5 percent in 2015. The energy sucked up by massive bit barns increased by 10 percent last year, expanding from 6,973 gigawatt hours (GWh) in 2024 to 7,663 GWh in 2025.
What happened
The latest figures from Ireland's Central Statistics Office (CSO) show that giant server farms now account for nearly a quarter of the country's metered electricity consumption. Their share rose to 23 percent in 2025 after passing 20 percent in 2023 and 14 percent in 2021 – up from just 5 percent way back in 2015. According to the CSO, the energy sucked up by massive bit barns increased by 10 percent last year, expanding from 6,973 gigawatt hours (GWh) in 2024 to 7,663 GWh in 2025. All other customers consumed just 2 percent more electricity over the same period.
Datacenters used more electricity than urban households, which accounted for 18 percent of metered use, and more than twice the rural-household share of 9 percent. "Datacenter consumption has grown every single year without exception, more than doubling between 2015 and 2019 from 1,240 GWh to 2,490 GWh, and tripling again between 2019 and 2025, reaching 7,663 GWh," commented Grzegorz Głaczyński, statistician in the CSO's Climate and Energy Division.
Why it matters
The rapid growth of datacenters in Ireland has significant implications for the country's energy infrastructure and sustainability goals. The Commission for Regulation of Utilities (CRU) put an effective moratorium on connecting new server farms to the electricity grid, at least in the Dublin area, where much of the activity tends to concentrate. This was lifted in December of last year, meaning electricity consumption still rose by a tenth while the moratorium was in place.
- Datacenters create jobs and stimulate economic growth.
- They enable the development of AI and other digital technologies.
- Ireland's data center industry has helped the country recover from economic downturns.
- Datacenters consume large amounts of electricity, straining the grid.
- They contribute to environmental concerns, such as greenhouse gas emissions.
- The benefits of datacenters may not be evenly distributed, with profits often realized overseas.
How to think about it
As the demand for digital services and AI continues to grow, it's essential to consider the impact of datacenters on energy consumption and sustainability. While datacenters bring economic benefits, their environmental costs must be carefully managed. This may involve investing in renewable energy sources, improving energy efficiency, and implementing policies to balance growth with sustainability.
FAQ
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- 01Irish datacenters now guzzle 23% of the country's electricity
- 02Irish datacenters now guzzle 23% of the country's electricity
- 03Irish datacenters now guzzle 23% of the country's electricity | Hacker News
- 04Ireland’s data centers consumed nearly as much electricity as every home in the country combined in 2025 — server farms gulped 23% of national power despite years of grid restrictions
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