Answer:
Wind, solar, geothermal, biomass, and hydropower also have environmental impacts, some of which are significant. Fossil fuels do substantially more harm than renewable energy sources by most measures. By understanding the potential environmental issues associated with each renewable energy source, we can takes steps to effectively avoid or minimize these impacts. Biomass power plants generate electricity from biomass that can be sustainably produced and utilized in the United States for energy and fuel, focusing on agricultural residues, waste materials, and forest biomass. In other regions enhanced geothermal systems (or hot dry rock geothermal), which involve drilling into the earth's surface to reach deeper geothermal resources, can allow broader access to geothermal energy.
Future of hydroelectric power in the United States will likely involve increased capacity at current dams and new run-of-the-river projects. Large-scale hydroelectric dams continue to be built in many parts of the world (including China and Brazil) There are environmental impacts at both types of plants. While actual impacts of large-scale operations have not been observed, a range of potential impacts can be projected.
