Here is a 300 MW solar installation, on 1,800 acres. 300 MW is a lotta megawatts. That's would be about 1/3rd of a typical U.S. nuke, except it only works during daylight hours. That is not as big a problem as you might think, because most demand is during the day. So, it is roughly 1/6th of a nuke. I'll bet it costs a lot less than 1/6th of a nuke. This installation is mainly to serve one customer: a steel mill.
The only nuke being constructed in the U.S. is in Georgia. It is 1,117 MW. It is an economic disaster. Quoting the Wall Street Journal:
Vogtle has been beset by numerous delays and cost overruns. It was originally scheduled to open in 2016, and the total cost of the two planned Vogtle reactors tops $27 billion—more than double the initial estimates approved by state regulators in 2008.
That's $13.5 billion for one unit so far, and still years away from completion. That's $12 million per megawatt of capacity. The Bighorn Solar Project described above costs $285 million. Taking the capacity at 150 MW (for daytime only), that is $2 million per megawatt. You can see why no one wants to build any more nukes.
Vogtle Nuclear Plant in Georgia Faces More Construction Delays
Southern Co. project is only one of its type in U.S., and could cost $2 billion more than expected
See also estimate of $11.1 billion for one unit:
"Georgia Power’s share of the initial estimated total project cost, $6.1 billion, has ballooned to $11.1 billion at the latest estimate."
Georgia Power website description of reactors: