Fig. 6: Annual country-specific net emission reduction potentials of planned hydrogen projects in 2043 compared with two reference scenarios.
From: Global greenhouse gas emissions mitigation potential of existing and planned hydrogen projects
a, The business-as-usual scenario. b, The low-carbon scenario. The potential of each country is shown as a pie chart with its specific share of hydrogen applications. The size of the pie chart corresponds to the amount of emission reduction potential. The larger pie chart to the top right of each panel (not in proportion) illustrates the overall net global emission reduction potential. Note that the sum of GHG-mitigating hydrogen projects (in the larger pie chart) can exceed the “Total” value shown above the chart (that is, visible in the Total on the top right of b), as this total represents the net emission reduction potential, which also includes hydrogen projects that emit more GHG emissions compared to the reference scenario (resulting in a negative contribution). A zoom-in is provided for Europe to better visualize the initially overlapping pie charts for some countries. Basemaps from Natural Earth (https://www.naturalearthdata.com/).
