Examinator- HARDLY.
The pollution in the cities (let alone the suburbs where most of the houses are) is hardly enough- nor of the actual concentration to frequently coat the panels of sun-blocking particles and render them unusable without frequent water rinses- practical experience of my own (feel free to judge it for what it's worth)

But nice try.

Arthur, a number of points.
Regarding rare earths being used in magnets.
Where they are used in motors or generators that implies DC generation.
I suspect from what I have read elsewhere that wind generators are DC
and that choppers are used to get 50 cycle.
However if the rare earths are not available then AC alternators or
DC generators with wound fields could be used instead.
The same applies with cars and in any case AC motors in electric cars
are much better anyway.

The manufacture of PV systems for export to the rest of the world
will cease in the next few years as oil prices rise making container
shipping uneconomical and uncompetitive.
Chinese exports of steel and furniture has already moved back to the USA.

I have just finished reading Jeff Rubin's book;
"Your World is About to get a Whole Lot Smaller"
He is a Canadian economist.

The world is about to undergo a major shift in manufacturing and
everything else as fuel prices escalate.