EED data-centre KPI calculator
The four indicators the EU report computes from your figures: PUE, WUE, ERF and REF, for one site and one year, with the 500 kW check. Nothing you type leaves your browser.
Four ratios, one site, one period. Enter the figures on the left, or load the worked example to see how the result looks. Results appear as you type.
What it calculates
| PUE | E_DC divided by E_IT. Power usage effectiveness: how much total energy each unit of IT energy takes. |
|---|---|
| WUE | W_IN divided by E_IT in MWh, in m3 per MWh. Water usage effectiveness. Zero water gives a valid zero. |
| ERF | E_REUSE divided by E_DC. Energy reuse factor: the share of facility energy handed on as useful heat. |
| REF | Guarantee-of-origin, PPA and on-site renewable energy added together, divided by E_DC. Renewable energy factor. |
The definitions are those of Delegated Regulation (EU) 2024/1364, Annexes II and III. Background: what to report and when and the regulation tracker. These are calculations, not a compliance verdict.
Which rules apply to a site?
The regulation pages hold every rule that applies in each European country, with its status and due dates.