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Key Findings

Electricity consumption by data centres increased by 31% in 2022

Online ISSN: 2811-5422
CSO statistical publication, , 11am

Key Findings

  • Electricity consumption by data centres increased by 31% between 2021 and 2022. The increase between January to March 2015 and October to December 2022 was 400% (See Table 2).

  • The percentage of metered electricity consumed by data centres rose from 5% in 2015 to 18% in 2022. This was an increase of 4,016 Gigawatt hours between 2015 and 2022 (See Table 1 and Figure 1).

  • Total metered electricity consumption increased by 20% or 4,900 Gigawatt hours between 2015 and 2022 (See Table 1)

  • Quarterly metered electricity consumption by data centres increased steadily from 290 Gigawatt hours in the first quarter of 2015 to 1,450 Gigawatt hours in the fourth quarter of 2022 (See Table 2 and Figure 2).

Statistician's Comment

The Central Statistics Office (CSO) has today (12 June 2023) published Data Centres Metered Electricity Consumption 2022.

Commenting on the release Niamh Shanahan, Statistician in the Environment and Climate Division, said: "The report shows the total metered electricity consumption by data centres by quarter for the period 2015 to 2022. Data centre consumption increased from 290 Gigawatt hours in January to March 2015 to 1,450 GWh in October to December 2022. Figure 2 shows a steady increase from quarter to quarter. The increase in consumption was driven by a combination of existing data centres using more electricity and new data centres being added to the grid.

The CSO published an additional release today showing total metered electricity consumption. The percentage of total metered electricity consumption accounted for by data centres increased from 5% in 2015 to 18% in 2022.

Large energy users with very high consumption accounted for 27% of total metered consumption in 2022. The total metered electricity consumption in 2022 was 29,500 GWh which was a 3.5% increase on 2021."

CSO Identification of a Data Centre

The CSO used various approaches to identify data centres: searching for names and aliases of known data centres; examining customers with high consumption located in specific business parks; and checking the customer names of all meters with a high annual consumption. Reports produced by other organisations, the CSO Business Register, and internet searches were also used. See the Background Notes for more information.

Table 1 Metered Electricity Consumption 2015-2022
 Gigawatt hours% of Total
YearData CentreOther Metered CustomersTotal% Data Centre
20151,23623,36424,6005
20161,47723,87925,3566
20171,75523,97025,7257
20182,17224,55826,7308
20192,47824,02726,5059
20203,01924,03727,05611
20214,00124,50528,50614
20225,25224,24829,50018
% Consumption by Data Centres
20155
20166
20177
20188
20199
202011
202114
202218
Table 2 Data Centres Metered Electricity Consumption by Quarter 2015-2022
 Gigawatt hours
YearJan-MarApr-JunJul-SepOct-DecTotal
20152903023153281,236
20163393593843941,477
20174054324484701,755
20184885245715892,172
20195765986356692,478
20206887197638493,019
20219199841,0321,0664,001
20221,1911,2831,3291,4505,252
X-axis labelData Centres Consumption
Q1 2015290
Q2 2015302
Q3 2015315
Q4 2015328
Q1 2016339
Q2 2016359
Q3 2016384
Q4 2016394
Q1 2017405
Q2 2017432
Q3 2017448
Q4 2017470
Q1 2018488
Q2 2018524
Q3 2018571
Q4 2018589
Q1 2019576
Q2 2019598
Q3 2019635
Q4 2019669
Q1 2020688
Q2 2020719
Q3 2020763
Q4 2020849
Q1 2021919
Q2 2021984
Q3 20211032
Q4 20211066
Q1 20221191
Q2 20221283
Q3 20221329
Q4 20221450