Renewable energy comes from natural resources such as the sun, in contrast to energy derived from finite resources based on fossil fuels like coal and oil that sooner or later will run out. Serious interest in renewable energy was sparked following the Arab oil embargo of 1973 and since then much progress has been made towards exploiting a variety of renewable energy resources, including solar, wind, hydropower, geothermal, biofuels, biomass, and ocean waves and tides. Put together, these are often referred to as the ‘renewable energy mix’. Read More