Low-carbon production of urea. Comparison between energy-cost savings on the lower axis and transport and financing penalties on the upper axis, with the heatmap showing the resulting relocation savings relative to the base case. The bottom row shows competition between energy-cost savings on the lower and other cost changes on the upper axis. Case 1A is shown separately from the other cases and not included in the corridor of values on the top row to highlight its saliency and contrast it with the otherwise monotonous decrease of production cost with increasing depth of relocation.
