According to small- and medium-sized generators of electricity, including solar, wind, hydro and biomass facilities, a decentralised energy market is a prerequisite for achieving the "ambitious targets for renewable energy and energy efficiency that were laid out by heads of state and government during the Spring 2007 European Council".
These "micro-generators" complain that the current regulatory structure in a number of member states prohibits access and limits fair competition, and call for a transparent streamlining and standardisation of grid access across the EU.
However, not all agree that decentralisation is entirely beneficial.
Some proponents of a more centralised model argue that supplying energy should be a public service shielded from unpredictable market forces, and that decentralised generation will lead to massive price fluctuations with potential supply disruptions caused by lack of oversight of a centralised grid.



