SINGAPORE -- With demand for data centers expected to skyrocket in an increasingly digital and interconnected world, Singapore's Keppel Corp. wants to change the game by building these notoriously energy-intensive facilities out at sea. Data centers are huge energy hogs due to their need to cool rows upon rows of servers. The state-backed conglomerate sees offshore builds as the solution both for saving energy, and for removing Singapore's geographical constraints in hosting more such facilities. Keppel signed a memorandum of understanding with Australia's Toll Group in April to study the feasibility of a floating data center.