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Table 2 Selection of case studies from literature used for comparison

From: A simplified model for the estimation of life-cycle greenhouse gas emissions of enhanced geothermal systems

Code Case study from literature Depth (z) [m] Number of wells (Nw) Installed capacity (PORC) [kW] Estimate of GHG performances [gCO2eq/kWh]
FA1 Frick et al. (2010) - SiteA1 3,800 2 1,240 54
FB1 Frick et al. (2010) - SiteB1 4,700 2 1,290 53
PtO Platt et al. (2012) - `ORG' site 3,162 2 1,740a 23
PtS Platt et al. (2012) - `SMB' site 4,307 2 2,870a 19
Ba Bauer et al. (2008) 5,500 3 2,940a 27
Hu1 Huenges (2010) - case 1 4,000 2 1,440 58
Hu2 Huenges (2010) - case 2 4,000 2 1,440 55
LBa Lacirignola and Blanc (2013) - base case 4,000 3 1,820 37
Su Sullivan et al. (2013) 6,000 10 20,000 18.9
  1. aFor Bauer et al. (2008), the auxiliary power demand of the ORC equipment is assumed to be 2% of the generator's output, considering that the total auxiliary demand (including the pumps of the geothermal loop) amounts to 4%. For Platt et al. (2012), the auxiliary power demand of the ORC equipment is assumed to be 20% of the generator's output considering that the total auxiliary demand accounted in its study (including the pumps of the geothermal loop) amounts to 37%.