Private electricity companies provided significantly more electricity for Germany's consumers in the past year, according to German industry association VDEW. Private firms and industry supplied nearly 58 billion kilowatt hours in 2004, an increase of almost 13 percent over the previous year. The growth in renewable energy was especially notable, with nearly 33 billion kilowatt hours generated by private firms, up from almost 26 billion in 2003. Germany's industries supplied the grid with 25.1 billion kilowatt hours of electricity -- mainly surplus energy from combined heat and power (CHP) generation -- just under the 2003 quantity of 25.6 billion kilowatt hours. All told, the privates contributed 11 percent of the almost 538 billion kilowatt hours generated in Germany.