“…Electric energy consumption kWh Most common indicator to quantify the overall amount of electric energy ] [Amrina, 2011] [Singh, 2018] [Cristea, 2021] [Zhu, 2015] [Favi, 2016] [Favi, 2017] [Diaz, 2019] [Litos, 2017 Water consumption litre Most common indicator to quantify the overall amount of water used [Amrina, 2011] [Singh, 2018] [Favi, 2016] [Favi, 2017 Natural gas consumption m 3 Most common indicator to quantify the overall amount of natural gas used [Amrina, 2011] [Zhu, 2015] [Favi, 2016] [Favi, 2017] [Diaz, 2019] [Litos, 2017 Lubricant consumption kg Most common indicator to quantify the overall amount of lubricant used [Amrina, 2011] [Gontarz, 2012] [Favi, 2016] [Favi, 2017] [Diaz, 2019 Concerning environmental KPIs, the LCA method has been used (ISO 14040 -ISO 14044) (ISO 2006a)(ISO 2006b) for this purpose. Environmental KPIs are calculated using specific life cycle impact assessment (LCIA) methods available in literature such as:…”