Think of the fossil fuel plant generating heat to produce electricity and then converting it back to heat. What a waste!

Assuming what you care about is heat transferred to whatever in your pan/pot, then it’s not clear that, even if the electric power is generated by combustion, it’s a major loss.

Induction is about 90% efficient, gas around 40–55%. Converting natural gas into electricity is 50-ish (30% for a gas turbine, the remainder from using the exhaust to run a steam turbine, maybe a little higher if the plant has MHD). Then there’s factoring in line losses, which depends on a lot of things. It’s pretty close to being a toss-up. But almost all of the electricity we get doesn’t come from combustion (we’re on a renewables-only plan- but even with that there’s natural gas generation if the duck curve goes wacky).

Then there’s the whole planet/personal thing. Planet wide, reducing emissions of greenhouse gasses is good, personally, as we live in an ultra-insulated home, there’s the question of just exactly what’s mixed in with the natural gas coming into the house.

My neighborhood has almost enough solar capacity to cover all our needs. The shared building is getting a batterywall soon. Next year or two, we’ll have carports with solar, and will be a net electricity generator. More batterywalls going into homes as we can afford it.

We probably won’t ever get to a full microgrid, but I’m looking forward to being an electricity net-producer. My individualistic part would like to be able to just disconnect from the grid (both gas and electricity), but staying connected and selling both our excess energy and battery capacity to the grid is financially attractive. If that changes, we’ll re-evaluate.