One option I don't see brought up often, in addition to battery, is HVDC. Transmission loss for 1000km on HVDC is 4% according to wiki.
Continent wide grids could be created connected Europe, Asia and Africa. Storage requirements could be lowered with HVDC grid interconnect. India's One Sun One grid plan is to build a Asia Africa hvdc grid.
Continent wide grids could be created connected Europe, Asia and Africa. Storage requirements could be lowered with HVDC grid interconnect. India's One Sun One grid plan is to build a Asia Africa hvdc grid.