Electricity storage requires investment in static pumped hydro or batteries but it’s not an engineering mystery.

I can’t take anyone who suggests nuclear seriously - why would nuclear be great?

Pros

• doesn’t emit greenhouse gasses
• generally consistent output (though some countries’ capacity factor has been shit over the last ten years)
• limited land use

Cons

• significantly more expensive than renewables and storage
• take 5-10 years to build a plant with the world’s strongest industrial economy only managing to build one every 1-2 years
• takes unique skills to know how to build a plant, let alone run it
• significant long term safety risks if things go wrong
• nuclear proliferation
• not enough nuclear fuel for a significant proportion of global electricity use
• can only be built in certain locations
• nuclear waste