

Efficient in what way?
A combined cycle natural gas power plant can get about 60% efficiency, and induction is usually above 90% efficiency. Even with some transmission efficiency reduction, you should still get over 50%+ total efficiency.
A gas stove on the other hand is only about 30-40% efficient.
Per unit of gas, it’s more efficient to use induction in that case.

Source for that?
You aren’t talking about that $2000 dollar pan with the heat fins on the bottom are you?