According to a report from the National Renewable Energy Laboratory, wind turbines are predominantly made of steel (71-79% of total turbine mass); fiberglass, resin or plastic (11-16%); iron or cast iron (5- 17%); copper (1%); and aluminum (0-2%).Many turbine components are domestically sourced and manufactured in the United States (Wind Technologies Market Report). Wind turbine towers are 65-85%...
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The USGS conducts basic research on geologic energy resources including oil, gas, gas hydrates, geothermal, and coal.