How much fertilizer can be produced if urine from an entire country is collected?

The potential varies by country and population size. In Sweden, collecting and processing all human urine could replace approximately 30% of the mineral fertilizers used in agriculture. In South Africa, the replacement potential is even higher at around 50%. Countries with larger populations and lower reliance on synthetic fertilizers could see even greater benefits. Our technology is designed to be adaptable to different climatic and socioeconomic contexts to maximize its global impact. 

Simha, P. (2021). Substituting nitrogen and phosphorous used in agriculture with human urine. https://osf.io/7ckax/

How much fertilizer could be produced if all urine on Gotland was collected? 

Gotland’s population of approximately 61,173 people (2022) and annual guest visits contribute to an estimated 1,405 tons of dry urine fertilizer per year. This could fertilize around 2,480 hectares of farmland, helping reduce dependence on imported mineral fertilizers while supporting local food production. *This is based on our own calculations*