I am in exactly the same place (my panels are 12yr old, which also means that I can't make any changes to the system without bringing it up to code, which means replacing it all, basically). I have been eyeing the Impulse Labs induction range[1] as a stopgap for one of the biggest pain points of long power outages (super expensive though, even with credits... and doesn't heat the house or keep the food in the fridge good - but it does look like a really nice stove!)