These don't mean you'd be completely de-risked, but your electricity bill will be a fraction of what it would be otherwise and you'll end up relatively well off

These don't mean you'd be completely de-risked, but your electricity bill will be a fraction of what it would be otherwise and you'll end up relatively well off. My district heat comes from a giant heat pump that extracts energy from waste water etc. Some other typical district heat sources are biomass and coal. If it's typical to rely on gas, perhaps check that they have a plan to convert to some other energy sources if needed.