Regulation of the environmental and energy markets is a hot topic. Water and sewage (on the environmental management side) and gas and electricity (on the energy management side), with their network-wide infrastructure, are characterised by monopolistic market structures. Yet these are now to be broken up and free market competition established in accordance with national and international policies. For the customers, this means that they will in future be able to choose their suppliers freely. PwC supports network providers in all issues relating to regulation and regulation management.