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Environmental Impacts and Benefits of Using Geothermal Energy

All energy development and production impacts the environment to some degree. But the use of geothermal energy can greatly minimize these impacts, resulting in environmental benefits for many states and local communities with growing energy needs.

Geothermal energy is clean, sustainable energy. Also, most geothermal energy postdates the passage of the National Environmental Policy Act in 1970. Therefore, the geothermal industry has grown up in an age of higher environmental awareness. As a result, the use of geothermal energy helps keep our air and water clean. The use of geothermal energy also greatly minimizes the amount of resulting solid waste and land required for energy production.

The U.S. Department of Energy works closely with its geothermal industry partners to further reduce any environmental impacts from geothermal operations. Learn more about the environmental benefits and impacts of the following geothermal technologies:

Also see the Environmental and Energy Benefits of Geothermal Heat Pumps (PDF 319 KB) Download Adobe Reader.

See Table 1 below for the primary federal regulations governing geothermal energy production.

Table showing the primary federal environmental regulations governing geothermal energy development. The Federal Water Pollution Act regulates geothermal energy development in regards to surface water and liquid waste. The Safe Drinking Water Act regulates geothermal energy development in regards to geothermal fluids and liquid waste. The Clean Air Act regulate geothermal energy development in regards to air quality. The Resource Conservation and Recovery Act regulates geothermal energy development in regards to solid waste and liquid waste. The Toxic Substance Control Act regulates geothermal energy development in regards to solid waste and liquid waste. The National Environmental Policy Act regulates geothermal energy development in regards to air quality, surface water, geothermal fluids, solid waste, liquid waste, noise, subsidence and seismicity, cultural resources, and biological resources. The Noise Control Act regulates geothermal energy development in regards to noise. The Geothermal Resource Operational Order number 4 regulates geothermal energy development in regards to air quality, surface water, geothermal fluids, solid waste, liquid waste, noise, subsidence and seismicity, cultural resources, and biological resources. The Occupational Safety and Health Act regulates geothermal energy development in regards to air quality, geothermal fluids, solid waste, liquid waste, and noise. The Endangered Species Act regulates geothermal development in regards to biological resources.