Don't do it all at once. Do it in the right order.
The dumbest electrification mistake is buying a heat pump in winter when your gas tank is still working, then a battery in summer when your solar hasn't been right-sized. Sequence it properly and each step pays the deposit for the next.
Solar first
Right-size for your future all-electric usage, not your current bill. The kWh you generate at $0/kWh feeds every step that follows.
Heat pump hot water
Replace the gas / electric resistance tank. Schedule it to run during solar hours. Drops your bill by $600–$1,100/year on its own.
Reverse-cycle climate + induction
Swap gas heating and cooktop for reverse-cycle AC + induction. Quiet, fast, ~3× cheaper to run than gas.
Battery (and disconnect gas)
Add the battery when your evening load is mostly electric. Cancel your gas connection — that's $300–$400/year of fixed charges gone.
Three numbers that make the case.
$1,000/year in gas connection fees and supply charges — money you pay just to have the gas pipe in your street, before you burn anything. $1,500/year more per appliance running on gas vs. heat pump or induction. $300/year in maintenance and corrosion costs you don't have on an all-electric setup. Plus: rooftop solar makes a kWh cheaper than any gas appliance can deliver heat.