At the end of June, a conference about space based solar power generation was held in Granada, Spain. The conference provided progress reports from groups in Europe, the US, and Japan who are working on concepts and plans for building solar power plants in orbit that would beam electricity down for use on Earth.
Sources:
http://www.thespacereview.com/article/214/1
http://www.congrex.nl/04c15/
Планы вещь нужная только пользы от них никакой если, нет сверхдешевых и легких СБ или амплитронов с КПД не менее 90% для передачи энергии лучем СВЧ.