i just noticed that you're linking a page about
panel prices
two problems
one, pv modules are typically about a third of the cost of a utility-scale solar farm; things like installation labor and power electronics are also part of the cost. so roughly we should expect solar projects to cost about 80 cents per peak watt based on that number
two, that page ends in 02021, but pv module prices have fallen by about a third to half since the beginning of this year https://www.solarserver.de/photovoltaik-preis-pv-modul-preis...
in particular solarserver's 'mainstream' category was about 25 euro-cents throughout 02021 and is now at 19, 24% lower, and the lowest it's ever been
it seems like the price-fixing cartel announced at the beginning of 02019 https://www.reuters.com/article/us-davos-meeting-solar-gcl-i... has finally collapsed
solarserver's 'low-cost' category is at the staggeringly low price of 11 euro-cents per peak watt; if the other costs didn't change, that would lower the solar plant cost from 80 cents to 65 cents or so per peak watt, though in fact they tend to increase somewhat because of the larger area of solar cells required to reach the same wattage (that's why the mainstream pv modules are more expensive)
a third problem is the capacity factor, tho; nuke plants typically run at about 90% capacity, while solar farms run at closer to 20%, because of problems such as night. in very polar countries like germany it's 10%. so 70 cents per nameplate watt works out to more like 3.5 dollars per delivered watt
which is still cheaper than 4.9 (or 5.4 dollars per delivered watt assuming that 90% capacity factor) but not implausibly cheaper anymore
if solar farm builders can find ways to reduce the costs of solar farms proportionately to the vertiginous drop in module prices, which sounds implausible but has always been done successfully before, we should expect the price to drop to half that