law: The Energy Conservation Act, 2001
  53. Power to exempt.-
  If the Central
  
  Government or the State Government is of the opinion that it is necessary or
  
  expedient so to do in the public interest, it may, by notification and subject
  
  to such conditions as may be specified in the notification, exempt any
  
  designated consumer or class of designated consumers from application of all or
  
  any of the provisions of this Act: Provided that the Central Government or the
  
  State Government, as the case may be, shall not grant exemption to any
  
  designated consumer or class of designated consumers for a period exceeding
  
  five years: Provided further that the Central Government or the State
  
  Government, as the case may be, shall consult the Bureau of Energy Efficiency
  
  before granting such exemption.