We basically need portable fusion, or micro-hydrogen turbines powered by hydrogen formed by electrolysis of seawater from purely renewable sources. It's quite an ask, given that, as you say, fossil is cheap and easy - although not as cheap as it used to be to get at - but artificially cheap on the market in a (in my view) desperate lunge to stave off the inevitable fall, as their real production costs catch up with them. There's a reason they're investing increasingly in "alternative" energy sources, and moving branding towards energy from fossil fuels. The market will act, but I fear too late.