3.5. Natural land transformation category
The results suggest that natural land transformation is the category with the biggest differences regarding the solar-only operation, and it also has the highest values in almost all the scenarios except for wheat straw and coal, whose main impact is associated with toxicity and eutrophication respectively. The fuel oil scenario has four times the impact on natural land transformation than the natural gas scenario (the next scenario most impacted in this category), due to the high level of transformation of natural land when building the extraction wells. Wood pellets have more impact in this category due to the land used in the production of wood, even if it comes from industrial wood waste with an allocation of 1%.
3.6. Single score
As shown in Fig. 2, the single score (sum of weighted results according to ReCiPe Endpoint Europe H) evidences that solar-only configuration is the best environmental option, followed by biomass derived fuels. Fossil fuels more than double the single score value compared to renewable fuels.