[censored][censored]" rel="nofollow" target="_blank">http://www.ebay.com/itm/Green-House-Salt...=item4aef8e3342 No specs, but there is a same "120" number on the image of the box.

Sure thing it's just a weird option. And not a very sustainable one (if you run off the supply rods...). I believe modern solar panels are the way to go, just don't rely too much on small ones, get a 150W one, it works in overcast. For portability I'd go for film panels.