I assume you are talking about #embodied energy and found this.
But I would say embodied energy of renewables or #nuclear is almost irrelevant as it is a one off. It's an investment so will reap a massive reward in CO2 reduction year on year.
However, cost is a real problem for nuclear. And in terms of scaling up fast, #wind & #solar seem best.
Well zeros can make a big difference and the cost is not to be sniffed at. Our local reactor is looking to cost 40 billion. You could run every school and hospital in Wales for 2 years with that amount of money and have spare change to build a couple of tidal lagoons.
You can easily build 1000 wind turbines for the cost of one reactor and do it in less time.
That's a big claim, and having watched a #nuclear power station being built I struggle to agree. Especially if you look at full life cycle from mining uranium to disposal.
Also most of the work with a #windmill is establishing the site. Once done repairs and upgrades are cheap.
And #renewables are quick. Chuck a spare at it and you'll have useful energy in a few months. The main problem in the UK is government obstructing them.
OK so I have googled the men capacity factor and of course #nuclear has nearly 100% and #renewables only 40%.
But this just means it produces on average 40% of it's capacity. You'd need a sunny windy day to get 100%
What I've read about is a #SWB (Solar wind and battery) system with massive overcapacity
So biomass, hydro and battery can take up the slack when needed. Or gas - which has a very low mean capacity factor <10% but is usually used as a last resort