.-Whoever dishonestly abstracts, consumes or uses any energy shall be punishable with imprisonment for a term which may extend to three years, or with fine which shall not be less than one thousand rupees, or with both; and if it is proved that any artificial means or means not authorised by the licensee exist for the abstraction, consumption or use of energy by the consumer, it shall be presumed, until the contrary is proved, that any abstraction, consumption or use of energy has been dishonestly caused by such consumer.