[Vindicis]

To make the costs more comparable, in the report he mentions, they estimate 2.5% per year of the installed battery capacity cost as the ongoing maintenance costs. And, the batteries have an 85% efficiency rating meaning they'd need 92 gwh of installed battery capacity to meet the 75 gwh demand, so tack on an additional $4.25 billion so the battery cost which is now $23 billion.

Based on the lifetimes of these South Korean plants(https://en.wikipedia.org/wiki/Nuclear_power_in_South_Korea), I'm just going to use 40 years as the lifetime for these calculations as I couldn't find any numbers for how long the UAE expects that plant to be operating regarding that operational costs of $20 billion which gives us:

Maintenance costs for solar of: 40 years x $23 billion x 2.5% = $23 billion

So now we're at a total current cost of $46 +7.5 = $53.5 billion for Solar vs. $45 billion for Nuclear.

Edit: Forgot the actual cost of the solar array that G80z said was $7.5 billion

[pydry]

The amount of solar/wind paired storage drops significantly if you take into account wind energy's anti correlation with solar, demand shaping and overproduction.

It isnt just a matter of getting 2GW of solar and getting enough batteries to supply 2GW through the night.