Ranking · hours/yr ≤ 18 °C
Data-center hubs with the most free-cooling hours
Median hours per year with outdoor dry-bulb temperature ≤ 18 °C over each hub's data centers (hubs with ≥ 5 data centers). Derived indicator from climate reanalysis, a siting signal, not a measured facility figure.
Method ·
| # | Hub | hours/yr ≤ 18 °C | Facilities | Country |
|---|---|---|---|---|
| 1 | Reykjanesbær (IS) | 8,766 | 24 | Iceland |
| 2 | Reykjavik (IS) | 8,763 | 12 | Iceland |
| 3 | Newcastle upon Tyne (GB) | 8,536 | 6 | United Kingdom |
| 4 | Edinburgh (GB) | 8,484 | 6 | United Kingdom |
| 5 | Dublin (IE) | 8,452 | 91 | Ireland |
| 6 | Liverpool (GB) | 8,238 | 8 | United Kingdom |
| 7 | Oslo (NO) | 8,173 | 18 | Norway |
| 8 | Manchester (GB) | 8,172 | 25 | United Kingdom |
| 9 | Leeds (GB) | 8,164 | 18 | United Kingdom |
| 10 | Helsinki (FI) | 8,003 | 29 | Finland |
| 11 | Cardiff (GB) | 7,955 | 10 | United Kingdom |
| 12 | Gävle (SE) | 7,953 | 9 | Sweden |
| 13 | Wellington (NZ) | 7,927 | 12 | New Zealand |
| 14 | Vancouver (CA) | 7,912 | 10 | Canada |
| 15 | Birmingham (GB) | 7,840 | 17 | United Kingdom |
| 16 | Leicester (GB) | 7,802 | 5 | United Kingdom |
| 17 | Tallinn (EE) | 7,799 | 7 | Estonia |
| 18 | St. Petersburg (RU) | 7,790 | 29 | Russia |
| 19 | Yekaterinburg (RU) | 7,786 | 8 | Russia |
| 20 | Calgary (CA) | 7,757 | 16 | Canada |
| 21 | Corsham (GB) | 7,725 | 6 | United Kingdom |
| 22 | Malmö (SE) | 7,724 | 8 | Sweden |
| 23 | Copenhagen (DK) | 7,711 | 30 | Denmark |
| 24 | Stockholm (SE) | 7,688 | 30 | Sweden |
| 25 | Middenmeer (NL) | 7,671 | 14 | Netherlands |
| 26 | Eemshaven (NL) | 7,647 | 11 | Netherlands |
| 27 | Crawley (GB) | 7,629 | 8 | United Kingdom |
| 28 | Riga (LV) | 7,624 | 10 | Latvia |
| 29 | Milton Keynes (GB) | 7,605 | 7 | United Kingdom |
| 30 | Moscow (RU) | 7,581 | 64 | Russia |
| 31 | Lausanne (CH) | 7,538 | 6 | Switzerland |
| 32 | Novosibirsk (RU) | 7,495 | 5 | Russia |
| 33 | Fareham (GB) | 7,475 | 9 | United Kingdom |
| 34 | London (GB) | 7,474 | 130 | United Kingdom |
| 35 | Reading (GB) | 7,472 | 35 | United Kingdom |
| 36 | Groningen (NL) | 7,466 | 7 | Netherlands |
| 37 | Tacoma (US) | 7,465 | 7 | United States |
| 38 | Amsterdam (NL) | 7,458 | 121 | Netherlands |
| 39 | Falkenstein (DE) | 7,455 | 14 | Germany |
| 40 | Grenoble (FR) | 7,438 | 9 | France |
Other rankings
- Largest data centers under construction or planned
- Largest operating data centers by disclosed IT load
- Most energy-efficient data centers (lowest disclosed PUE)
- Most interconnected data centers (networks present)
- Countries with the most tracked facilities (data centers and network sites)
- Countries by disclosed operating data-center capacity
- Largest data-center operators by number of facilities
- Data-center hubs under the most water stress
- Operators by disclosure coverage
- Operators by disclosed operating IT load