Demographic collapse in China is the reason why I am not so optimistic, you will have decline in domestic demand coupled with wide spread labor shortages which will drive up the cost, automation is still too expensive contrary to popular opinion.
They are already shifting to high value manufacturing with EV's and Semi-conductor focus, Labour cost is already cheaper in Mexico then China, but the reasons companies are not moving away on mass is because China crushes everyones else on infrastructure, so even decentralised manufacturing will not compete on prices.
The global implication for this is terrifying, no country is able to compete with their efficiency and scale of production which they will loose in the next decade or two, this will have a major impact on global prices, your looking at the peak right now, unless we start manufacturing it ourselves your energy needs will be dependent on global supply chains.
You also haven't addressed the land this will occupy, 29x greater then the GERD, for home or small business use no problem, anything at scale, huge risk.
Hydropower is more maintenance heavy and would create more jobs then Solar, the reason you can't adequately predict output is you have a lot of factors outside the sun and cloud that play a role, especially maintenance, we have a lost of dust and sand which have an impact, impossible to calculate when you have 100.000 panels, how much energy you loose just through that or a few cloudy days.
Take a look at the failure of America's $1 billion dollar solar Farm.
I watched the video they are talking about their attempt at a new unconventional use of solar energy technology, that's why it failed and then they later manage to correct the technology so it works now.
But i don't support Solar farms in open area it can create environmental damage. Solar panels should be installed on top of rooftops on homes and its less expensive to do so and you don't need to waste millions of dollars
How solar farms took over the California desert: ‘An oasis has become a dead sea’
Residents feel trapped and choked by dust, while experts warn environmental damage is ‘solving one problem by creating others’
www.theguardian.com