Power: Cities use power and are a power sink to the overall power supply system. It makes sense, therefore, that every roof and siding could be made into a solar power creator, where cities could then be large power contributors. Power companies should install solar on every building that is feasible and at no or very little charge to occupants. A finance scheme could allow buy-ins by private companies or individuals. Otherwise, the installer is the equipment owner and power owner. Solar would become a normal part of building construction. Revenues from solar are owned and arbitrated by equipment or installation owners, whether private or public. Power companies and/or their technically aligned partners, then maintain and improve, on an on-going basis, this aspect of the national solar contribution grid.

Transport: Cars in the near future, may become powered by electric or by Hydrogen. It is conceivable that roadways could become part of the power-grid and supply power and control through Graphine blankets installed into the freeway system. Power lines, leading to a city could then also be power-strips that feed and charge power-packs and batteries, and also allow computer directed traffic, in cities and between cities.

Decisions on the direction for the future, first must answer how are we to have a truly sustainable world? Should the world consist of diverse, self-sustaining continental areas, where resources and the life that depends upon them might remain somewhat isolated and protected? See #3 of the World Plan main page on Diversity.
Will the world grow more integrated?
A group of steps toward an international power system can begin with engaging improvements to national grid and transport system that will also fit to a long range world power distribution plan. The beginning endeavors of a long range plan would allow the clean up of individual countries and the forging good partner relationships with that country and the larger world. Power, materials and power distribution would begin to conform to larger, well-laid international plan.

One possible direction of a world power plan is a fully integrated world power grid. An integrated power system would allow world finances to be tied to energy by stitching banking and energy contribution and energy consumption to a world power grid.
A national power grid, could be designed to allow mass transportation along conduit lines. Container shipping and interstate travel could be very fast and at a small fraction of present transport costs.
An international power grid, so designed, could allow international shipping and travel at seemingly extreme speeds and at a very low comparative cost. Very Important: International conduits  then bring international energy contribution which eliminates regional isolation and allows  renewable energy inputs without the need for storage, an aspect to future self-sustaining energy production, missing up until now. The world does not have the battery technology, nor storage facility to conduct a viable renewable supply. Interconnection means the night is always connected to the energy contribution of the day.

Of course, in any coordinated system, all operations and traffic are under computer management.

At the same time, communications along an international power grid, using the grid conductors themselves, could be nearly instantaneous being run on the same conductors.

World power, world transportation and world communications - all becoming dynamically efficient and coordinated, for the entire world, to an extreme extent. Products and vehicles could be sent from one continent to another in 30 minutes.

Nulls and Nodes: Financial monitoring should attempt to balance energy storing operations and technologies with usage. careful planning needs to specify progress and attach controls and governors to avoid extremes - such as nulling or collapse of operational nodes. We can't have a region go broke within minutes of a power outage. :-}