I see a GIANT opportunity for “green” in restaurants – induction cooking. It is reported that induction cooking is 90%+ efficient vs sub 50% for electric or gas, and that’s just the COOKING. The lack of ambient heat caused by the inefficiency of heat transfer by electric coil or gas flame, would also reduce the need for A/C in the summer.
Unfortunately, you can’t find such a product in the US suitable for a restaurant. I found ONE induction cooktop with (I think) six burners for $19k. I can buy a gas range with 10 burners and 2 ovens for around $3k. Also, the 6 induction cooktop required 3-phase electric, which would be an additional build-out cost of several thousand. If the government wanted to subsidize the difference, I’d be all over it. Of course, this doesn’t help pizza ovens, but most restaurants have burners too.