“The all-in-one solar powered system comes packed inside a 20-foot shipping container. Contents of the container include an 11-kilowatt solar panel system that features 40 panels, a battery management system, a 20-kilowatt battery to store excess energy and provide 30 hours of backup power, and a 15-kilowatt inverter that directs the collected energy.”
http://siouxcityjournal.com/news/local/hog-power-energy-ready-to-power-the-ag-industry/article_ae62cda3-fbbc-5e38-ace9-388accae44bc.html