Isn't concentrated solar power (https://en.wikipedia.org/wiki/Concentrated_solar_power) an alternative way to harness solar energy and convert it into something usable? While not useful for installations like a home roof, I thought it made sense for generators and such.
The advantage of concentrated thermal solar is that it can provide pure base-load 24-7 with its thermal capacity. The disadvantages are the expense, glare, and on a smaller note that they ironically need fuel to start up and get the salt molten again - when it must be down for maintenance. Not technically zero carbon because of that - at least until it becomes viable to generate sufficient heat electrically with a grid.