Don’t let this stop you. Wind and solar is cheap - often the biggest barrier is NIMBY not allowing construction, so demand your local/national political climate stop that. Allow solar by right on any roof. Allow wind turbines by right on all ag land. Encourage your utilities to put in storage systems to use that renewable energy “when the wind doesn’t blow”. Encourage good programs to buy renewable power over fossil power (everyone should pay for their share of the power lines and storage batteries - this is a large part of the cost of power)

Electric cars are already becoming popular. There are many things that you can do to encourage that. Better yet, your can encourage great transport in your city (most cities don’t have great transit!)

There are many areas already running their grid on a majority renewable power. We know this works.

The above measures won’t get rid of all fossil fuels, but they get rid of the vast majority. They work with today’s technology as well, and are affordable without subsidies!. No need to invest anything new/more. Just ensure that laws don’t get in the way.