This document discusses renewable energy and solar energy in particular. It notes that renewable energy sources like solar, wind, hydro and biomass currently provide 19% of global electricity. Solar energy harnesses power from sunlight using solar panels that convert light to electricity via photovoltaic cells. The document proposes that space-based solar power (SBSP), which collects solar energy in space via satellites and transmits it to Earth using microwaves or lasers, could be more efficient than ground-based solar as it avoids issues like clouds, weather and limited collection times. SBSP satellites would concentrate sunlight onto solar panels in space before transmitting the power to large receiving antennas on Earth.
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