Martin Lewis said certain E.ON customers could save roughly 50 per cent on their energy bills by switching to one particular tariff.
The money-saving expert told his audience on the ITV Money Show that most of the best energy deals currently on the market are exclusively being offered to "existing customers".
He also highlighted that due to the current sporadic nature of the market, deals are constantly changing. He explained that some of the cheapest deals currently available are being offered by E.ON with both variable and fixed rates available.
According to the consumer champion, one particular variable rate could be around 50 per cent cheaper for "typical" energy users. Read more: OVO energy to hand out free top-up credit and electric blankets this winter Read more: OVO customers set to save £160 this winter Martin said: "The one tariff I would suggest, this is for E.ON Next customers, this is actually quite a simple deal if you're with E.ON Next.
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