EcoWatch: The International Energy Agency (IEA) on Friday released a report, Medium-Term Renewable Energy Market Report 2015, which found that by 2020, 26 percent of the worlds energy will be generated by renewable sources. The agency notes this is a remarkable shift in a very limited period of time. Renewable electricity expanded at its fastest rate to date, 130 GW (gigawatts), in 2014 and accounted for more than 45 percent of net additions to world capacity in the power sector, says the report. Costs...