Having trouble finding a location for your data center project? This DCD podcast could have the answer. Build underground.  Andrew Bourget of Swiss engineering firm Eccus has a design for a 2MW data center built in an underground tunnel - and he can dig that tunnel wherever you want it, even under existing buildings.  The way he tells it, tunneling is the future. There's no planning permission required, and you can build under your existing facility. You can migrate underground, and still have your above-ground space available for offices or to rent out. Is he serious? Time will tell. He's currently working on projects in Switzerland and France - with his eye on London, where the clay subsoil is apparently ideal for underground data center vaults.