After seeing the devastation of the wild fires we no longer have fires. We spend a lot of time in fire ban areas. Our white gas Coleman has still been allowed and I use it cautiously and not if it is very windy. It is very efficient and uses very little fuel. I commend you for trying flameless cooking. I Know you like to figure out new methods. I have 2- 200 amh KS2 Lithium batteries with 300 watts of solar and a 2000 w inverter. I won’t use an induction stove. I am not willing to shorten the life on my inverter. I also rarely use my 700 w microwave. It is too slow and uses too much power. It takes about 5 minutes to barely warm a bowl of soup. I created an doc. to track my power consumption. My 3 Qt Instant Pot is the most efficient way for me to cook. You can cook meals in the pot or use a pot in pot method using the batteries. It only draws power while it is heating then maintains temperature for quite a while.