North / South hemisphere intercontinental HVDC grids would be best. Providing hydro-power at the Inga falls on the Congo, for example, costs $54bn but would provide power for Africa during the daytime and for Europe during the African night. Allowing night time power generation to be utilised by daytime users, on other continents, dramatically reduces the overall renewable generation capacity required, from solar, wind, hydropower and existing nuclear power.
North / South hemisphere intercontinental HVDC grids would be best. Providing hydro-power at the Inga falls on the Congo, for example, costs $54bn but would provide power for Africa during the daytime and for Europe during the African night. Allowing night time power generation to be utilised by daytime users, on other continents, dramatically reduces the overall renewable generation capacity required, from solar, wind, hydropower and existing nuclear power.