Extract from the reference list:

 

Energy crops:

  • Biogas Alerheim OGH, Germany
  • Biowatt, Austria
  • Biogasanlage Seidenfus, Germany

 

Bio-waste / expired (packed) food:

  • Bioenergie Schlitters, Austria
  • Landkreis Böblingen, Germany
  • Biofutura, Slovenia
  • Bio Energie Centrum, Germany
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