You'd need to be able to store that energy though and then you're into efficiency problems again.
Very few people need to heat their homes at 2am
(That's ignoring that Go isn't available to 90% of the population either).
Well yes because the conversation was about storing not direct heating.
From what I see many of the techs expected to come will be precisely that, storing heat as a way to release stored energy later either directly or indirectly.
Right now we work very much on a direct use, even with hot water for many due to the rise of the combi
When the future will really need to be based on more storage and time of use tariffs
That way we will (or should) be adapting to use and store more energy when generation is high and lower direct usage when its not
Go was until recently available to anyone, and there are some reports of it being checked now but I know a couple of people (plus myself) who recently moved to it and they didn't check at all.
Really the tariff we all want to take off is agile, but right now its borked due to the fix to gas pricing (its effectively capped at 80p (£1 - gov rebate)) although frequently drops well below the 34p standard unit price.
Plus of course the rest of the suppliers to stop being bloody useless and come up with some tariff innovation of their own. Which they are particularly crap at.
The equivalent to eco 7 (go is actually listed as an eco 7 product) varies wildly by supplier in pricing. It would be very very close to the gas cost with some, it would definitely be within the efficiency of your system as to if it was cheaper to direct heat with elec as opposed to gas on some but certainly not all.
BG for example are laughable (or were until I switched) with their eco 7 pricing.