Datacenters in Ireland draw more power than all rural homes put together

Bit barns consumed 14% of all energy for 2021 – a significant rise over just a few years

Datacenter energy use has eclipsed power consumption among all rural homes in Ireland, according to figures from the country's Central Statistics Office (CSO). The trend is set to continue if 2020-2021 data holds with datacenter power draw growing by nearly one-third between 2020 and 2021.

Aerial view of small town Cashel in Tipperary County of Ireland - the census is taken every 5 years and the 2021 census was put off until April 2022 due to COVID. Results are still being collated.

Aerial view of the town of Cashel in Tipperary, Ireland. population 4,422 according to a 2016 census

The National Planning Framework, published in 2018 by the Irish government, defines rural as all areas outside towns with a population of less than 10,000 [PDF]. Ireland has a large rural population, with 1.8 million people (36.35 percent) who live in rural areas, well above the EU average of 27.3 percent.

As reported by The Irish Times, the latest figures from the CSO show that the percentage of metered electricity consumed by datacenters in Ireland has risen from 5 percent in 2015 to 14 percent during 2021. This compares with 12 percent for the total power consumed by rural residential consumers during the same year, although still less than the figure for residents in urban areas, who accounted for 21 percent of electricity consumed.

The CSO figures indicate that the total metered electricity consumption in Ireland increased by 16 percent, or 3,906 gigawatt hours, between 2015 and 2021, while the quarterly metered electricity consumption by datacenters alone has risen steadily from 290 gigawatt hours in the first quarter of 2015 to 1,058 gigawatt hours in the fourth quarter of 2021.

Perhaps not surprisingly, the CSO points out that the increase in consumption was driven by a combination of existing datacenters consuming more electricity as well as new datacenters being added to the grid. However, it also claimed that most of the metered electricity consumption was accounted for by just a small number of datacenters.

New bit barns

There are now estimated to be about 70 datacenters in Ireland, operated by internet giants such as Amazon, Facebook and Google, and not forgetting Microsoft, which opened its first datacenter outside of the US near to Dublin in 2009.

According to Irish publication The Journal, 10 new datacenters were made operational since 2020 alone, with €7 billion ($7.4 billion) spent on building these facilities in the previous decade and another €7 billion ($7.4 billion) likely to be spent on adding more between now and 2026.

county clare , ireland

Ireland warned it could face 'rolling blackouts' if it doesn't address data centres' demand for electricity


Microsoft is understood to have been granted permission to build two more datacenters at Dublin’s Grange Castle Business Park, while Amazon last year applied for permission to build two more of its own facilities close to the Irish capital.

Concerns were expressed in the past about the amount of energy consumed by datacenters, but according to figures from the International Energy Agency (IEA), while datacenters account for approximately 1 percent of global electricity use, improvements in energy efficiency mean that their global energy consumption has only increased 10 percent over the past decade despite workloads having grown by 9.4 times over the same period.

However, tech firms have committed to measures to make IT infrastructure more energy efficient in future. For example, AMD this week gave a progress report on its 30x25 plans to deliver a 30-fold increase in energy efficiency across its high-performance compute (HPC) platforms by 2025, which would mean reducing the power required by 97 percent compared with 2020 levels. ®

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