Using vertical space, Will Allen of Growing Power (based in Milwaukee, Wisconsin) shows how 3,000 square feet of growing space is converted to 4,500 square feet. On his total 3 acres, he says he produces a million pounds of organic food each year. He also recycles the water used in greenhouses to raise mercury-free fish.
Growing Power has farms in Milwaukee and Merton, Wisconsin, and in Chicago, Illinois; and has established satellite-training sites in Arkansas, Georgia, Kentucky, Massachusetts, and Mississippi.
The Milwaukee Headquarters is pursuing Anaerobic Digestion. Anaerobic digestion is a the processes in which micro-organisms break down compost in the absence oxygen, which manages waste and creates energy. Anaerobic digestion is widely used as a renewable energy source because the process produces a methane suitable for energy production, helping to replace fossil fuels. The nutrient-rich end product which is also produced can be used as fertilizer.
The urban farm is also powered through a series of 30 solar panel cells to help offset our energy consumption.
And be sure to catch the Growing Power Wisconsin Conference, September 7-11, 2011