In reply to a post by Michael_Chare:

If I sign up for a years electricity supply at a particular price then that is what I get.

Not sure if its still the case but some gas/electricity deals could be price capped on kWh usage (potentially the price per kWh could drop) but the daily standing charge is/was fixed for the duration of the deal.

In reply to a post by AdrianPH:

TalkTalk are promising no price rise within contract in their TV adverts. Maybe that will push others to do the same.

I hope that you are right and it is interesting that Talk Talk have chosen to advertise this feature.

I regard mid contract price inceases as essentially deceptive. The suppliers are essentially hoping that you won't botther to move. Further it makes it makes it difficult to use price as a method of selecting a supplier.

Of course it's anti-competitive and "unfair". Personally, I don't think it should be allowed without giving the consumer similar rights in the other direction, where the effort to stop a proposed change by the consumer is similar to the effort to stop a proposed change by the supplier.

But the reality is, it's happening and almost every major provider does it 1-2 times a year. Maybe to increase profit, partly just to pay for things like increasing usage meaning that backhaul has to be upgraded, things like that.