Oxnard, Calif. based onion producer Gills Onions has turned to fuel cells to solve both its waste and energy needs. 

Working with Southern California Edison and FuelCell Energy of Danbury, Conn., Gills Onions' advanced energy recovery system reduces 75% of the 300,000 lbs of daily waste.  This waste is then converted to liquid and placed in an anaerobic digester where it is converted to methane and burned to power two 300 kilowatt fuel cells, which provide 35 percent to 45 percent of the farm's electricity needs.

According to the Danbury News-Times, Gills Onions "received a $2.7 million California state grant to cover part of the [$9.6 million] cost."

You can view a video about the project from the Ventura County Star.