Solar started in truly tiny markets, like for satellites.
It moved to slightly less tiny markets, like ocean buoys, remote radio repeaters, and eventually off-grid homes.
At each point, there were small markets for which it made sense.
During this time, PV started showing it had good experience effects, with costs declining about 20% per doubling of cumulative production. This empirical experience curve (which has actually gotten better recently) was the basis for additional funding, to drive the technology down the curve.
Nuclear has not shown good experience effects. There is no small niche market for NuScale's reactors. There's nothing to drive it down some supposed experience curve, and no reason to think the curve would be favorable.
It moved to slightly less tiny markets, like ocean buoys, remote radio repeaters, and eventually off-grid homes.
At each point, there were small markets for which it made sense.
During this time, PV started showing it had good experience effects, with costs declining about 20% per doubling of cumulative production. This empirical experience curve (which has actually gotten better recently) was the basis for additional funding, to drive the technology down the curve.
Nuclear has not shown good experience effects. There is no small niche market for NuScale's reactors. There's nothing to drive it down some supposed experience curve, and no reason to think the curve would be favorable.