Abstract: The global energy interconnection will be of great importance to implement“the Belt and Road Initiative”, boost energy revolution and ensure national energy security. The author gives an in-depth discussion on the development practice of global UHV, smart grid and clean energy both in China and abroad, and then comes up with the idea of sustainable energy development by speeding up clean replacement and electricity replacement. The feasibility of establishing global energy interconnection is also elaborated. Lastly, key areas of technological innovation for global energy interconnection are pointed out and corresponding comprehensive benefits to the environment, economy and society are described.

Key words: global energy interconnection, clean replacement, electricity replacement, UHV, smart grid, clean energy