I know I'm going to get hammered for this, but it's not as if we're dangling our smalls on bamboo poles off our balconies. I find the sight of huge buildings that I know house hundreds of tumble dryers more offensive that a few flapping teeshirts.
Maybe we need to go back to the old days when every unit was allocated a drying day, just to exercise some control. meanwhile, I reckon washing lines on apartment roofs would probably be a more efficient use of solar and wind power than all these high tech solar cell arrays and windmills.