I haven't personally laid city gas piping, but I can share some thoughts. It really depends on your preferences and budget. City gas might have a higher upfront cost, but it can be convenient in the long run. However, if you're considering alternative options like solar panels, that's a great choice too. With a single-phase 100amps setup, you should be good for an induction hob. And if you decide to go the solar panel route, you might want to explore residential energy storage solutions to make the most of your solar-generated power. Check out acebattery.com for more info.