'Unstoppable force' of solar power propels world to 40% clean electricity

“ And solar was the fastest-growing electricity source for the 20th year in a row.

It now provides 7% of the world's electricity”

The economics have shifted. It used to be that solar or wind were more experimental, and lacked any economies of scale. Their production was poor and less was known about how they fared in the long term.

Now, their prices have gone down, their generation per unit has gone up, and much more is known about how they behave long-term.

The world has a LOT of power generation. It will take time to replace. But with every time that some existing power generation source shuts down due to age, or expansion occurs somewhere, it will inevitably be done with solar/wind. It's just more cost effective now.

In the end it is not environmental concerns that will cause solar and wind to become commonplace. It's just economics. Slapping down something that generates power for 20-30 years with no input fuel is just way more economically feasible than anything that requires fuel. They still have maintenance costs, but it's nothing by comparison. They can completely undercut other sources of power.

Storage capacity on the grid will need to massively increase as well for solar to go much further.