Section 1(5)(b) in The Electricity (Supply) Act, 1948
(b)the provisions of this Act, to which sub-section (4) applies, which are not in force in any State on the commencement of the Electricity (Supply) Amendment Act, 1978 (23 of 1978), shall come into force in that State on such date as the State Government may, with the concurrence of the Central Government, by notification in the Official Gazette, appoint.]