New figures have revealed that more than 94,000 prepayment meters were forcibly installed without customer consent last year.
According to the same government figures by firms to Energy Security secretary Grant Shapps, 70 per cent of the installation were done by British Gas, Scottish Power, and OVO energy. The three large energy companies fitted a total of 66,187 devices under a warrant.
Meanwhile, Scottish Power has been labelled "the worst offender" after forcing more than 24,300 meters into its customers' homes.