Differences up to 2050 are relatively limited however, and are not quantified here. The largest difference between the Baseline and this scenario is brought about by reducing water demand from electricity generation (down by 37% in 2050), followed by domestic and manufacturing demands (each down by nearly 30%). Human nitrogen (N) emission is the N emitted in wastewater by households and industries that are connected to the same sewerage system. Dividing by D results in a value that applies to the total population.