Why is British Gas increasing DD payments on fixed tariffs?

Lundynet

I'm on a March24 fixed energy tarrif and in the last few months they've increased the payments so they're now £225 in credit and usage is about to plummet. They claim to be building credit against next winter, but the original payment already took account of this, surely and they've repeatedly assured me that the tariff is fixed.  I can't reduce payments, just increase them. 

Robin9

Lundynet said:

  I can't reduce payments, just increase them. 

Are you sure ? Not with BG but EDF and although the system initially gives only an increase option I was able to decrease by 20% - still well in credit.

Thrugelmir

Has your annual consumption increased? 

Lundynet

If anything, consumption less than last winter and I haven't persued a reduction beyond the options on the account, thanks for the feedback 

Chrysalis

Probably to build cashflow. 

Shedman

Why not switch to monthly whole amount DD and pay for what you use and then build up your own winter credit nest-egg  in a savings account rather than in BG's pockets?