Is there a special glass panel that would prevent heat from getting into the
room in the first place (while still conforming to condominium standards)?
Putting up an awning isn't an option since it's a condo.

Your real problem is that you live in a condo.
How about shutters, are they allowed? Make your
awning/shutters out of solar panels, and then when the
condo-board complains, tell them that state law prohibits them
from interfering with your alternative energy solutions.
If that's not true, lie.
Sell the condo and buy a shack somewhere where you actually
have rights to your own property, and you will be happier and
more comfortable.

--Goedjn