 Under the agreement, a study was to be conducted to determine the feasibility of building 4 new nuclear power stations in Italy.On 9 July 2009 the Italian legislature passed an energy bill covering the establishment of a Nuclear Regulatory Agency and giving the government six months to select sites for new plants.However, the nuclear agenda of Silvio Berlusconi's government was slowed down due to the strong opposition of ten Italian regions (Basilicata, Calabria, Emilia-Romagna, Lazio, Liguria, Marche, Molise, Apulia, Tuscany and Umbria), that challenged the energy bill passed on 9 July 2009 (the part that gives the government the responsibility for the reopening of nuclear facilities in the country) because they deemed it as unconstitutional.