For comparison, France, which produces 78% of its electricity with nuclear, only generates about 380 TWh per year with nuclear power plants (2019). China generates ~350 TWh/year with nuclear. 5% of their energy production produces as much as close to 80% of France's energy sector.
And before anybody chimes in with "but they produce everything for everybody in the West": Only around 10% of their production is exported. They have the biggest domestic market in the world and they have the largest middle class population in the world. They have money too and they consume like any other economic actor.
And all this is before considering things like how energy-intensive producing fertilizer is, and fossil fuels are a required part of getting the necessary ingredients.
This can't be solved by consuming/producing less unless a part of that solution is wiping out a significant part of the human population and getting rid of modern civilization. Solving the energy issue (and by extension poverty, resource conflicts, etc.) requires us to actually figure out how to generate enough cheap and clean energy for 8+ billion people.
Western?! What about cities like Tokyo, Dubai, Beijing, Johannesburg, Singapore?