ANNEX IVSupplementary provisions
ANNEX IV PUBLICLY AVAILABLE INFORMATION IN THE EUROPEAN DATABASE ON DATA CENTRES Pursuant to Article 12 of Directive (EU) 2023/1791, the European database shall be publicly available on an aggregated level. Data shall be available at two levels of aggregation, namely, at Member State level and Union level. Size categories of data centres shall be based on the data centre’s information technology installed power as follows: (a) very small data centre: 100–500 kW; (b) small data centre: 500–1 000 kW; (c) medium size data centre: 1–2 MW; (d) large data centre: 2–10 MW; (e) very large data centre: > 10 MW. The following information shall be publicly available: (a) at Member State level: (i) number of reporting data centres; (ii) distribution of reporting data centres by size categories; (iii) total installed information technology power demand (PD IT ) of all reporting data centres; (iv) total energy consumption (E DC ) of all reporting data centres; (v) total water consumption (W IN ) of all reporting data centres; (vi) average PUE for all reporting data centres in the MS territory, average PUE per type of data centre, and average PUE per size category; (vii) average WUE for all reporting data centres in the MS territory, average WUE per type of data centre, and average WUE per size category; (viii) average ERF for all reporting data centres in the MS territory, average ERF per type of data centre, and average ERF per size category; (ix) average REF for all reporting data centres in the MS territory, average REF per type of data centre, and average REF per size category. For points (vi)–(ix), the aggregation of the sustainability indicators shall be performed with a weighted metric aggregation, using the total energy consumption as the weighting factor. For points (vi)–(ix), presentation of aggregated data per type of data centre and per size category will be possible only if the respective category contains data from at least three data centres; (b) at Union level: (i) number of reporting data centres; (ii) distribution of reporting data centres by size categories; (iii) total installed information technology power demand (PD IT ) of all reporting data centres; (iv) total energy consumption (E DC ) of all reporting data centres; (v) total water consumption (W IN ) of all reporting data centres; (vi) average PUE for all reporting data centres in the Union territory, average PUE per type of data centre, average PUE per size category; (vii) average WUE for all reporting data centres in the Union territory, average WUE per type of data centre, average WUE per size category; (viii) average ERF for all reporting data centres in the Union territory, average ERF per type of data centre, average ERF per size category; (ix) average REF for all reporting data centres in the Union territory, average REF per type of data centre, average REF per size category. For points (vi)–(ix), the aggregation of the sustainability indicators shall be performed with a weighted metric aggregation, using the total energy consumption as the weighting factor.