law: Electricity Act, 2003
  171. Services of
  
  notices, orders or documents.-
  1.     
  
    Every
  
  notice, order or document by or under this Act required, or authorised to be
  
  addressed to any person may be served on him by delivering the same after
  
  obtaining signed acknowledgement receipt there for or by registered post or
  
  such means of delivery as may be prescribed--
  a.      where the Appropriate
  
  Government is the addressee, at the office of such officer as the Appropriate
  
  Government may prescribe in this behalf;
  b.     where the Appropriate
  
  Commission is the addressee, at the office of the Appropriate Commission;
  c.      where a company is
  
  the addressee, at the registered office of the company or, in the event of the
  
  registered office of the company not being in India, at the head office of the
  
  company in India;
  d.     where any other
  
  person is the addressee, at the usual or last known place of abode or business
  
  of the person.
  2.     
  
    Every
  
  notice, order or document by or under this Act required or authorised to be
  
  addressed to the owner or occupier of any premises shall be deemed to be
  
  properly addressed if addressed by the description of the owner or occupier of
  
  the premises (naming the premises), and may be served by delivering it, or a
  
  true copy thereof, to some person on the premises, or if there is no person on
  
  the premises to whom the same can with reasonable diligence be delivered, by
  
  affixing it on some conspicuous part of the premises.