Results of long-term studies available.

Why a world energy transmission system?
Evolution steps of a world energy transmission system between 2000 and 2050,
Presentation of scenarios,
Case studies: regional sub-systems, main links building up continental or intercontinental energy 'skeleton'

Different vectors of power transmission: comparison's criteria,
Transmission power capacities, transmission distances,
Targets: economical, disponibility, environmental constraints,
Integrated links: energy + communication + transportation of passengers or material

Extrapolation of classical A.C. and D.C terrestrial and submarine technologies,
Superconducting technologies,
Gas-insulated cables,
Other new technologies,
Microwaves: waves guides, WPT, Lasers.

Natural gas,

Case studies.