[ncmncm]

We are limited by the rate that manufacturing capacity can be scaled up, and then by the rate that product can be built out. I.e., it takes time to build factories. Spending more, you can get more factories, but they are not done sooner. A dollar can be spent on more factory, or on factory output. The factories you have so far can produce at some maximum rate. More factories than you expect to need later are hard to get financing for.

Prices for big solar installations are in the public record. And for nukes. Recently North Carolina and Georgia spent, what, $15B for exactly 0 watts out. They were quoted another $10B to get the 2GW they had signed up for, which they had expected to pay, what, $8B for, total? They won't get any of it back.

The corruption tax on nukes is withering. Nobody involved wants the money to ever stop flowing, as actually delivering would cause.

The best I have seen for nukes is $2B/1GW, but nobody knows how to get that with any reliability; and that is discounted by a huge government disaster-insurance subsidy, and excludes ~$1B end-of-life decommissioning. I see $1B/1GW for recently finished solar projects, but prices are still falling fast.