Quotes got a bit messed up there.
From the consumer point of view there is the choice of electricity for at 330% efficiency or gas at a boiler efficiency of 90%.
A kWh of electricity is much more expensive than a kWh of gas so there may be no economic advantage - as I explained myself upthread only in that case I was referring to burning oil.
The 330% was taking a relatively low SCOP, and accounting for the 90% already.
But yes, there is only a direct economic benefit if your kWh cost of electrons is not more than ~3.3 times the kWh cost of gas/oil/wood/whatever.
At the moment my peak rate electrons are a little over 39p, and my gas is a little over 10p.
That gives a ratio of 3.8 (I used the accurate figures), so I'd need (assuming a 90% efficient boiler) a SCOP of 3.4 (good, but not spectacular).
Of course that ignores the fact that off peak I'd run it (for hot water, and some heating) with electrons at 7.5p, needing a SCOP of just 0.7 (stupidly low).
So even with my "expensive" day rate, I would probably break even with a scop around 3.
My battery isn't going to do a huge amount (because it's already working pretty hard), but increasing that (e.g. by using V2L/V2H from an EV) would substantially drop the cost of the electricity, and therefore increase the economic gain.
I'd also not have to have a gas standing charge, or a boiler service agreement, carbon monoxide detectors, etc etc.
ANTONISH wrote: ↑8 Mar 2023, 10:40am
As for cooknig, I'm stuck with electricity - from the past I remember gas as being more controllable.
The control is different - modern electric cookers (whether radiative or induction) are much more controllable than old ceramic pad or coil "burners".
One thing lots of people say is that you can't turn the heat down very fast - but it's fairly easy, you just lift the pan...
It's much easier to stir things over a modern electric hob as well, since you don't burn your hand on all the hot gases bypassing the pan entirely.
