Hi Steve

Our last quarter

First 386 units @ 15.08p
Next 1674 units @ 12.82p
Last 79 units @ 10.99p

That averages out @ 13.16p (2139 units)

Standing charge 94 days @ 26.44p (£24.85)

All prices subject to 5% vat

EDF Energy is our supplier

If he doubles your charge to 16.30p including standing charge, then it sounds about right, but bordering on the high side depending on consumption (the more you use the cheaper it gets)

HTH

Peter