In a recent study, researchers from the European Environmental Bureau (EEB), the Stockholm School of Economics (SSE), and the Potsdam Institute for Climate Impact Research (PIK) questioned the planned development of new nuclear capacities in the energy strategies of the United States and certain European countries.
You can build a 50MW wind farm in 6 months
https://www.edfenergy.com/energywise/all-you-need-to-know-about-wind-power#:~:text=Wind farms can be built,last between 20–25 years.
Lot to unpack here.
There are actually a few countries that have 100% renewable capacity such as Iceland or Scotland and a lot more that are very close.
Yes we could be 100% renewable by now but the ff industry has done a lot of lobbying and conservative politicians have dragged their feet.
It has been a lot longer than 20 years since countries started building nuclear, yet were not 100% nuclear, is that a fault of the technology? or the politicians and NIMBYs?
Wind works at night, so you dont really need to store a nights worth of energy, especially as energy consumption is much lower at night.