Closing the infrastructure gap before the year 2050 by strengthening existing infrastructure with ET3 is entirely feasible and it can be achieved in three coordinated phases:

1) bringing ET3 to maturity, including full-scale commercial deployment (2−5 years); 2) expanding ET3 networks around the globe at national levels (30 years); 3) connecting national ET3 networks into the international network (15 years) and creating one city called Earth.