Uh, no. You can make Methane from CO2 and electricity with something like 70% efficiency. So while gas will become a lot more expensive, it won't become too expensive to use it for cooking. You don't need all that much gas for cooking.
You need to factor in the fact that in many areas natural gas is literally a waste byproduct of the oil extraction process, which is why it’s cheap enough for us to cook with. It’s not just that we would need to make methane at 70% efficiency, it’s that we’d be transitioning from something that’s artificially cheap to something that must be made special purpose just for cooking right as alternatives are getting cheaper. And then there’s the distribution network. That’s not free to maintain, and in a world where better electric options are available municipalities are going to want to stop paying for it.
This is the same thing I say to petrol heads about gas. Sure, there might be some left for enthusiasts. But enthusiasts alone will not be able to afford the massive economies of scale that make that consumption anything close to affordable.
I argue that the price for fuel essentially doesn't matter because you don't need all that much. Electricity costs a couple of cents per kWh, so it's very unlikely that synthetic Methane will cost more than a few dozen cents per kWh. So you can run a stove for an hour a day for one or two bucks or so. I guess that's several times more than you pay for natural gas, but a lot cheaper than going to a restaurant.
> so it's very unlikely that synthetic Methane will cost more than a few dozen cents per kWh
No, it’ll cost much more than that. You’re ignoring the factored in cost of storing and distributing gas. This is something that’s only affordable because of economies of scale (and government support) because it was the only practical option for heating and hot water for a while. As electricity gets cheaper and people switch over to heat pumps and electric hot water heaters, the cost of that distribution network is going to fall on fewer people, driving up their cost.
I wouldn’t be surprised if that the gas bill for synthetic methane just for cooking was as high as your current gas bill for heating and cooking. Once economies of scale go away, things get costly fast.
> So you can run a stove for an hour a day for one or two bucks or so. I guess that's several times more than you pay for natural gas, but a lot cheaper than going to a restaurant.
Sure. But the competitor to a natural gas stove isn’t eating out, it’s electricity. Especially as gas gets more expensive and induction ranges become the norm.
I think it’s more likely that we’ll see carbon taxes make it prohibitively expensive than the cost of production itself. In Canada, we’ve got a tax going up to $170/ton by 2030. If most homes go fully electric, I bet that goes up even further.