E.ON today launched Energy Saver v1, a tariff that caps gas and electricity unit rates until 1st of October 2009. Prices are guaranteed not to rise above the rates shown.

Customers will also receive a free E.ON in home energy monitor to help measure how much energy is used.

The tariff is available from this service and as with most E.ON offers, customers can earn 1 Tesco Clubcard point per £ spent on energy, as an added bonus.