Renewables should be called 'Intermittablels'. We need to add materials needed to manufacture storage or transmission (there is always sunlight somewhere, there is always 5 o'clock somewhere, blah blah) to Zephyr's numbers.
While the tech itself is feasible as a niche or supplement it only exist now due to massive subsidies and the fact that traditional produce base load.
Germany had subsidies in the past. Nowadays they are more or less gone and the big energy companies have lobbied a ton, so that coal is still prefered over gas here, our solar industry is destroyed and currently the goverement is also working on destroying the wind power industry. Despite all these political problems for renewables they are still growing. That is because they are cheaper than regular energy even with all the burocratic bullshit you have to deal with here, if you want to install pv on your roof .
And we are talking about germany with 1600 sunshine hours a year compared to 2500 in many parts of spain. In april we had many days with 50-70% of overall electricity production from renewables. This technology is not a niche anymore - even here in germany with problematic regulation and little sunshine. Renewables + gas power plants + power to gas is the future of energy generation and does not need a single battery storage or other crazy storage technology. If there is enough renewable overproduction (converted into gas) the gas plants will only run from november to february with not much load.
Edit: Just to make it clear. We have very little hydro (1-2% ?) energy in germany - so I am just talking about wind and pv.