China wants to put a solar farm in space by 2025 [engadget.com]
According to China's state-backed Science and Technology Daily, Chinese scientists plan to build and launch small power stations into the stratosphere between 2021 and 2025, upgrading to a megawatt-level station in 2030 and a gigawatt-level facility high above the earth before 2050. Without atmospheric interference or night-time loss of sunlight, these space-based solar farms could provide an inexhaustible source of clean energy. The China Academy of Space Technology Corporation claims such a set-up could "reliably supply energy 99 per cent of the time, at six-times the intensity" of solar installations on earth.
China's proposal suggests converting solar energy into electricity in space, before beaming back to Earth using a microwave or laser and feeding into the grid via a ground receiving system.
Also at the Sydney Morning Herald [smh.com.au].
See also: China Wants to Build the First Power Station in Space [bloomberg.com]