monthly debit virtually doubled

What are the unit and standing charges on your present Fixed tariff?  What are the Future Annual Consumption predictions as shown on your “My Plan” page? This should allow you to do a cost breakdown for both your present Fixed Tariff and the Simpler Energy Tariff. It will look something like this for each of them.

To work out how OVO decides on your Direct Debit, you need to do a few more things. First, you need to subtract any credit (or add any debit values) from the Totals. Dividing this by 12 would give a simple estimate for your Direct Debit.

HOWEVER, OVO insist that, if you are going to pay via DD that you ALWAYS have a credit equal to the size of your monthly DD in your account. So you need to add that simple estimate value to the Totals and then divide that sum by 12 to fulfil that condition. So in my case above, a simple estimate would give £100.72. Adding this to my total gives £1309.29. Dividing this by 12 would give me a DD of £109.11 per month. I have assumed that I have no credit or debit on my account.

How close is the £127 per month when you work it out in this way? If it is way off, you should contact OVO. (I ALWAYS use the Messenger function on OVO’s Facebook page whenever I need to make contact)

OVO review our Direct Debit payments every three months.

Thanks for that - calculator out at the weekend then!