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I feel like my Direct Debit Check In is totally unfair, why has it increased?

  • March 28, 2019
  • 81 replies
  • 7762 views

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81 replies

  • Newcomer
  • July 23, 2025

Why are 'future energy cost' estimations NOT based on the previous years usage?


Firedog
Super User
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  • Super User
  • July 23, 2025

This query deserves a proper response, but first we have to know which ‘future energy cost’ figure you’re referring to, where you’re seeing it and why you doubt its accuracy.

There are two related figures that are available in the online account:

  • the Future Annual Consumption figure on the Plan page. This is in kWh, which can be used to estimate future fuel costs by applying current tariff rates; 
  • the Estimated energy costs shown under Check your monthly minimum payment calculation on the page Change direct debit amount.

There may be others, so please clarify ...


  • Newcomer
  • July 23, 2025

I'm referingʻ to Estimated energy costs shown under Check your monthly minimum payment calculation on the page Change direct debit amount.

This is a monetary value that has no relation to the same usage period last year!


Nukecad
Super User
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  • Super User
  • July 24, 2025

This one then:

Looking underneath that you will find dropdowns with an explanation of how they calculate that ‘monthly minimum payment’ and the calculation for your account at the current time.
 

I'm referingʻ to Estimated energy costs shown under Check your monthly minimum payment calculation on the page Change direct debit amount.

This is a monetary value that has no relation to the same usage period last year!

 

The monetary value that is shown there is calculated as a total of 4 things:
Your recorded usage last year* in kWh for the period from now to the next 31 March priced at your current tariff prices (not last years tariff prices),
PLUS
The daily standing charges that are due to 31 March, (current SCs not last years SCs).
PLUS
Your current account balance,
PLUS
An extra payment, if needed, so that you will be at least a month in credit on 31 March.

*If a full recorded usage for last year is not available then ‘Industry Standard’ figures are used instead.


  • Newcomer
  • July 24, 2025

Thanks Nukecad, I'll try this calculation.

I have all my usage data from last year, so will run the numbers to see how close it is.

Cheers 


Firedog
Super User
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  • Super User
  • July 24, 2025

I don’t have gas, so these instructions will have to be modified as appropriate if gas is involved ...

To find out where the Estimated energy costs come from,

  1. Take the Future Annual Consumption (FAC) figure from the Plan page, calculate the annual cost using the unit rate per kWh and add 365 standing charges, then add 5% VAT. 
  2. Divide the result by 12 to find the notional ‘one month’s cost’ amount.
  3. On the DD Calculator page, use mouse, pencil and paper to tot up the monthly amounts showing on hover on the Costs bar chart. 
  4. Add the results of (2) and (3) together to get a total estimated cost between now and 31 March next year.
  5. Adjust this figure for Today’s balance - add it if it’s negative (debt), subtract it if it’s positive (credit).

This should bring you within a penny or two of the Estimated annual costs. The one variable that could throw the whole exercise off kilter is the FAC. This will ideally be not far off the past year’s consumption, found by finding the difference between the latest meter reading and the one on the same date 365 days earlier. If your FAC is very different, there will be an explanation.