Solar prices in the sunniest regions have already dipped below 3c unsubsidized, and are projected to keep falling for decades to come, even without any major technological breakthroughs. So aiming for that price 10 years out, with a new design isn't a very good sign
Renewable are all nice and good, but currently we're still building fossil fuel power plants all over the world. It would be better if we instead built nuclear plants. Expanding renewables and nuclear are not opposites of each other.
Is that a rhetorical question? Because night time usage largely relies on battery storage for which economies of scale are also reducing the cost in a similar predictable fashion.
However I will say there are newer solar panels that I've read about being tested which can theoretically produce power by moon light. Granted it won't be anywhere near the amount during the day but generating energy via solar at night time isn't entirely impossible it just won't be generating the same amount by orders of magnitude.
It would be cheaper to do any number of things(battery storage, Nuclear, world power grid) than to build out more solar capacity to capture the pitiful full moon light once a month.
It really comes down to storage. Solar is just now passing coal costs. when it falls another order of magnitue, most of the effort will go to pumping water up hills or batteries or whatever.
Solar at night is currently 10c (again it seems to be falling in price as more roll out), at least in places that have strong enough sunlight for concentrating solar: