Ecological limitation to the energy transfer from the outer space to Earth

The energy production development on Earth is related with a number limitation. One of the reasonable ways is the thruster of the main production facilities into outer space. It is most rational to use the fusion reactors with D³He cycle from the economical and ecological consideration. There are two directions in the usage of the high power produced in outer space. The first direction is based on the electric energy transfer to Earth for its future utilisation. The second direction which has been developed by the authors for a number of years is the implementation of the energy produced in space at the large outer space-located industrial complexes. The energy producer and the energy consumer represent a single complex without deterioration of ecological conditions on Earth