The company says a pre-requisite for the growth is for the area to become a "honey pot" and attract new companies working in the shadow of the site. To do that the area needs to create an "centre of innovation", with better road and rail links, more housing, international schools and more office space, they say.
No formal decision has yet been made to place the ESS in Lund, southern Sweden, but at a meeting of European research ministers, Sweden got enough support to carry off the deal, minister Lars Leijonborg says.
The ESS has been called as a gigantic microscope. All kinds of items can be bathed in neutrons to reveal their most intimate details, at the atomic level, giving a boost to many different fields of investigation.