the pro's will chime in soon, but it seem if theres no power then wind would be ideal, your far enough south I would think aerating all year would be allright, you can always turn the air valve off and bypass it.
that would not raise the dues, windmill aerators roughly cost $2500 and can be installed in a long day.
one company i dont recommend is superior windmill in canada, they have a poor customer service program. Other than that wind is the way of the future!
