From the Charlotte Observer, with the emphasis being on nanobreweries vs. somewhat larger producers, with a nanobrewery being defined as a brewery that produces three barrels of beer (a barrel is 31 gallons) at a time:

For Andrew Durstewitz, one of the founders of D9 Brewing Co., the plan was always to start at the nano level and grow. The brewery has had success following that plan, but that doesn’t mean he would advise others to do the same.

“If I had to do it all over again, hindsight 20/20, I really wouldn’t suggest people get into nanos and try to grow them organically,” Durstewitz said. “I don’t think there’s time left in the market now.”The time and money it takes to scale up later is considerable, noted Durstewitz. But then the time and money it takes to start a nanobrewery is what makes that concept so appealing for many in the first place.