Hey guys! I'm planning to make a business out of beer brewing and I'm interested to know if you have any good suggestions for a cost-effective storage to keep large amounts of beer cool. Any help or idea is greatly appreciated.

The easiest way is to build a cold room and use a split refrigeration cooling system used by the big boys.

Basically you need to build a room large enough for your product, seal the entire inside to prevent moisture, insulate the hell out of it and put a door in it. Think meat locker, just not so cold.