I haven't been following this theme as closely as I should so I don't know if anyone has commented on wind turbines. They will leak during the winter but you can combine them with some kind of trap door that could seal off the opening when not in use. If I am not clear of you wish to follow-up please contact me.
Jerry in IN _______________________________________________ the OrchidGuide Digest (OGD) [email protected] http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
