I always wondered why not use a system like this to heat water and use turbine to generate electricity. Shouldn’t this get much higher output efficiency compared to pv panels.
It might be more competitive if it can be paired with thermal storage, but AFAIK that's not demonstrates at scale yet.
But the CSIRO has a system where a camera looks at the mirrors from the tower and estimates quite well the mirror angle from the shade of blue reflected.
This makes it closed loop control, one sensor for many mirrors and simple actuation like lead screw with raise/lower controls possible.
The sort of solar panels one would use in a large installation are around 23% efficient.
So they are close in "power/hectare". From there it is capital costs and cost of operation that will make the decision.