The main advantage that batteries have over pumped storage is that a big battery bank can be built in six months, while a pumped storage system will take something like three years. (ramblingsdc.net)
As long as you have some power — a small battery bank from solar or similar, you shouldn't have any trouble running this fan. (tinyhousegiantjourney.com)
It can be outfitted with low - power fans that run on a portable battery bank. (inc.com)