Damn, I saw a video on why they use molten salt years ago, something about the balance of cost, thermal mass, and the fact that it won't boil off like conventional liquids.
The one in CA doesn't have any salt storage, I think it was built before that tech had been flushed out
One particularly grim side effect of the plant’s construction is that birds, attracted to the insects gathering at the top of the towers, are incinerated as they pass through the beams of concentrated sunlight. According to estimates, this results in some 6,000 deaths every year.
Geez, maybe develop some kind of screen or something