Renewable energy is making its move. Eighteen percent of all electricity in the United States was produced by renewable sources in 2017, including solar, wind and hydroelectric dams. That’s up from 15 percent in 2016. According to data released by the International Renewable Energy Agency (IRENA), by the end of 2017, global renewable generation capacity increased by 167 GW (gigawatts) and reached 2,179 GW worldwide. This represents a yearly growth of around 8.3 percent, the average for seven straight years in a row. According to the National Renewable Energy Laboratory and the Department of Energy, renewable energy is important because of:
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