The Grain Silo is a building often seen on farms stacked together in large numbers, for the purpose of making money.
2012-09-02 10.48.44
It is favored due to its small space requirement and higher chance of energy and carrot generation.
Cost Time Profit Profit/hr Backyard Profit/hr
15,000 coins 2 hr 50 coins 25 coins 27.5 coins

Sell Value: 1,800 Coins.