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E.ON Heat Tariff Calculator 2025

This calculator has been created to compare the four tariffs offered by E.ON within the Monkerton district heating network effective from 1 April 2025. The information should be used as a guide only and does not supersede any official advice provided by E.ON.

Check the following tariff information is correct via the Tariff tab on your E.ON Heat account or app. Some charges vary depending on the size of property, particularly standing charges. The default values are for a 4-bedroom house.

You can now switch tariffs without calling E.ON via your online account and clicking the Tariff tab. You can also access daily usage information under the Meter Readings tab (click Meter read history) which can help with these calculations.

E.ON have chosen not to include all tariff details on the Price Review letter this year, nor provide a personalised recommendation of the best tariff. To check your tariff information, you will need to log in to your online account. The calculations below include the £5 discount for online billing. Please note that the tariff information (service charge and unit rate) shown on the website do not include VAT and will be different from any numbers on your Price Review letter. Please use the numbers on the website as the calculator adds VAT.

Please note that Heat 2 is now a high-use tariff. This is currently labelled as a low-use tariff on their website and app.

Tariff Information









Consumption Data

Enter the consumption data from your latest bill or using two manual readings. It is not recommended to use a consumption period of less than 7 days.




Annual cost of each tariff based on current consumption:

Lowest cost tariff based on current consumption:

Comparison with Cranbrook Heat Network based on current consumption: