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Table 4 Investigated processes for energy production from grassland

From: Sustainability assessment of energy technologies: towards an integrative framework

Nature of grassland Type of biomass and yield (dry matter per hectare and year) Product or process Label
Maintained extensive grassland (low productivity) Mulching Reference grassland use  
  Hay (3.9 t) High pressure (HP) bales (REKA) A
   Round bales (Herlt) B
   Pellets (Agroflamm) C
   Dry fermentation with maize silage D
Converted extensive grassland Short rotation poplars (5.6 t) Wood chips E
Maintained intensive grassland (high productivity) Grass silage, two cuts per year (6.4 t) Wet fermentation F
   Wet fermentation with substrate mix F
  Grass silage, three cuts per year (10 t) Wet fermentation F
   Wet fermentation with substrate mix F
Converted intensive grassland Maize (15 t) Wet fermentation G
   Wet fermentation with substrate mix G
   Dry fermentation with hay D
  Short rotation poplars (9.4 t) Wood chips H
   Wood chips (low emissions combustion) I