@
meldrewreborn
Thanks for that. I have a dilemma then. I used approx. 696kWh Elect and 1040kWh Gas between 6Aug and 30 Sep. I don't know what the Next Flex rates were between those dates but using the current rates I would be due around £144 refund. Assuming Next Flex rates rose by 30% on 1st Oct then I would be due somewhere in the region of £110 if I took up their offer. However my SCs would rise by about 2p per day for 6 months so that would cost me a few quid.
So, I reckon if I take the offer I will be around £100 better off immediately... but if the rates rise in April I will lose four months of my fix. If the rates rise by only 10% above my fix then then (using last year's usage) I will be about £100 worse off.
Conclusion...
If I accept the offer then I could just about break even by the end of my current fix. But it's a gamble as I don't know what is going to happen in April. I am also inviting more confusion by adjustments being made to my account.
If I stick on my fix I'm risking about £100 but I know where I'm at. If the Next Flex rates in April are lower than my fix then I can switch at that point.
Thanks for your input. I'm now leaning the other way so as to thank them for their fair offer and to consider the matter closed, but to stick with my fix in light of political developments.