Solar power on its own cannot supply base load electrical power. Period. Full stop.
Only in combination with an extensive power storage infrastructure could such a thing be possible. Constructing such things would easily cost as much, or more, as constructing all of the necessary PV plants.
Moreover, very substantial changes to the national power grid would also need to be undertaken.
At the best possible costs this work would easily exceed what it would take to build enough fission power plants to provide all of the base load, and that isn't happening with any degree of rapidity either.
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Solar power on its own cannot supply base load electrical power. Period. Full stop.
Only in combination with an extensive power storage infrastructure could such a thing be possible. Constructing such things would easily cost as much, or more, as constructing all of the necessary PV plants.
Moreover, very substantial changes to the national power grid would also need to be undertaken.
At the best possible costs this work would easily exceed what it would take to build enough fission power plants to provide all of the base load, and that isn't happening with any degree of rapidity either.