8% of electricity, not total world energy.

But the growth rate has been huge for as long as records have been kept, and was a factor of just over 10x between 2014 and 2024, speeding up more recently.

PV and wind together are likely to start breaking the electricity market severely in the first half of the 2030s; I hope, but it's not certain yet, that ongoing battery expansion will allow the demand for electricity to increase and this can continue to the end of the 2030s, because at the current pace of development those scale up to all our energy needs, not merely our present electrical needs, in a bit less than 20 years from now. (PV alone would do all of it in 20 years at present rate of change).

Energy use goes up as civilization advances, and Jevon’s paradox suggests that we’ll use more energy as its cost goes down. Couple that with the need to replace some portion of the installed base of solar capacity over time and I think solar will be a growth industry for the foreseeable future.

It also assumes that there will never be demand for improved solar generation orthogonal to currently-prioritized metrics. As an example, a nice park near my house was clear-cut to install a solar farm a few years ago. I used to enjoy walks under the trees in that park, and seeing the animals that lived there. Perhaps as solar infrastructure becomes more stable and secure, concerns will turn towards the ecological ramifications of covering so much of the Earth's surface with ecological deserts, and there will be a desire to replace older generations of solar panels with ones that somehow can support or integrate more elegantly with nature. And then the next thing. And then the next thing.