Never, because we don't need 14 days of full load capable storage. Most models say we need about 3 days to get 99.99% coverage with a reasonable amount of overbuild & interconnect.
No one generally expects more than a couple of hours of storage to be needed. But for the fun exercise let’s calculate what spending Vogtles $36.8B on equivalent renewables, as in TWh delivered, and the storage gives.
That makes the renewables come out to about $9B.
With storage costing $0.063B GWh and having $28B to spend we can build 444 GWh storage.
That is the equivalent to running Vogtles two new reactors for 10 days straight.
In this calculation we don’t even bother with Vogtles O&M costs compared to near zero for renewables and storage.
Do you now understand how incredibly expensive new built western nuclear power is?
Where are all these 14 day full load capable storage plants being built?
I’m not saying they aren’t, I am saying I don’t see the data.