Energy Scammers will typically claim to be from an energy company or Ofgem.
Energy Scammers will typically claim to be from an energy company (whether from the Big 6 or a small independent company) or Ofgem (the UK electricity and gas regulator) intending to mislead customers in any number of ways.
For example, a scammer may claim that they can offer a cheaper rate on a pre-paid gas/electricity card, expecting the customer to pay there and then. But the scammer has no connection to the energy company and so, not only does the customer pay the scammer, but they must still pay their normal rate to their electricity company. Some scammers may also ask to see the energy bill which may give them access to the customer's personal details, enabling them to commit further fraud.