Table 6 Effects of the different scenarios on climate change calculated using global warming potential (GWP) and the Renewable Energy Directive (GWP RED) approach and value of the net energy ratio (NER), energy efficiency (EE) and fossil fuel replacement potential (FFRP) energy balance indicators
| Â | Base case | No excess el | Biogas for internal H&P | External el prod. | Fossil diesel |
|---|---|---|---|---|---|
GWP (g CO2eq/MJ)b | 38.5 (−52%) | 37.2 (−54%) | 42.4 (−47%) | 53.9 (−33%) |  |
GWP RED (g CO2eq/MJ)b | 16.3 (−80%) | 16.9 (−79%) | 28.1 (−65%) | 47.1 (−41%) |  |
NER (MJprim/MJ) | 0.33 | 0.34 | 0.59 | 0.80 | 1.19 |
EE (%) | 41% | 40% | 22% | 40% | Â |
FFRP (MJ/kg straw) | −5.81 | −5.36 | −2.42 | −2.07 |  |