The EU will rate data centres on energy and water from 2027

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Europe’s data centers are to be graded on how much energy and water they use, under a rating scheme proposed on Monday by the European Commission.

Any individual site drawing more than 500 kW is covered. What the rating measures is not only consumption but what a data center puts back: heat recovered and reused, clean generation it adds, and how far it can flex its own demand when the grid is under strain.

The argument for taking the time to recover the heat is based on one figure: if about half of the heat that Europe’s data centers currently waste were recovered, it would meet the heating needs of four million households.

“Tripling our data center capacity cannot mean tripling the pressure on our grids, our water and our energy bills,” said Teresa Ribera, the Commission’s executive vice-president for clean, just and competitive transition.

Tripling is not merely hypothetical;...

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