Would the new high voltage line somehow differentiate nuclear-generated electricity from electricity generated by wind or solar plants, and stop the nuclear stuff from flowing through? Seems unlikely, or prohibitively expensive. Maybe JREF and Desertec envision mega utility scale solar fields in the deserts of China that would feed dedicated, inter-country HVDC lines.
If not, then the new Super Grid would mix all of the above, including plenty of nuclear. Japan could continue with its nuclear shutdown - currently almost all of the 54 nuclear reactors that have supplied 30 percent of its electricity are switched off - while importing nuclear from China.
We'll have to wait for answers - and for someone to finance and build the cable, which is what JREF and Desertec aim to catalyze. "Establishing an Asian Super Grid will be challenging and require a high level of international cooperation," says Tomas Kåberger, JREF executive board chair.
Desertec invests in a for-profit group called Desertec Industrial Initiative (Dii) whose members include grid companies Siemens and ABB. Perhaps Dii can begin to provide some clarity.