> I still have to do the big 5 gal one in the kitchen, though, with a
> heater... which uses leccy....

Well, wine makes it's own heat when it's fermenting. Try wrapping
that carboy in a blanket and see what happens. At minimum, you won't
need as much warming if you insulate it. That, or power your heater
with solar or a wind turbine...

:O)

Joe