Medical purchases, representing 50 to 70% of the footprint: medicines (29 to 40%) and medical devices (15 to 25%). Energy accounts for only 10 to 20%, despite operation 24 hours out of 24 with air-conditioned operating theatres and imaging equipment requiring cooling. Next come food (3 to 5%), staff, patient and visitor travel (3 to 5%), waste including infectious healthcare waste (2 to 4%) and anaesthetic gases (1 to 3%), low in volume but with very high warming potential. In total, 84% of emissions fall within scope 3.
Read the source article: A hospital's Bilan Carbone®: which categories weigh most?