The utilities sector has undergone enormous changes over the past decade, with deregulation leading to far greater competition and an ever tougher fight to hold on to existing customers – let alone acquire new ones.
This has led, in the case of some providers, to an almost inexcusable reliance on cold call telemarketing to try and win over new households. Powergen, one of Britain's leading energy suppliers, and part of E.ON, the world’s largest investor-owned utility, is not such a company.
Powergen operates strict rules on the frequency of mailings.

