A Bloomberg story posted at Renewable Energy World describes the use of biogas at a BMW plant in Rosslyn, South Africa, which is about 50 miles northwest of Pretoria. The German auto manufacturer has a 10-year contract with Bio2Watt to create as much as 4.4 MW of electricity from biogas collected in the fields surrounding its plant, where about 30,000 cattle craze. The energy is created from dung and organic waste ranging from discarded dog food to sour yogurt, the story says.
When it is fully engaged, the biogas facility will provide 25 percent to 30 percent of the electricity for the BMW plant. Solar power and other renewable sources may also be employed at the plant. BMW already uses renewables for about 51 percent of its electricity.
BMW is also active on the renewable front in the United States. At its plant in Greer, S.C., it is working with the Energy Department, Ameresco, the Gas Technology Institute and the South Carolina Research Authority is developing ways to use garbage to create hydrogen fuel cells. The latest advance is the use such cells to power forklifts.