When compared to burning carbon deposits, a 3-ton residential geothermal heat pump system produces an average of about one pound less carbon dioxide per hour. The installation of 100,000 units of residential geothermal systems can reduce greenhouse gas emissions by almost 1.1 million metric tons of carbon equivalents over a span of 20 years.
Wind energy is consistently available in nature, and after initial installation, a turbine doesn't need much maintenance and can geenrate electricity by itself. As opposed to burning fossil fuels, there is no need for any additional fuel to continue generating power, which reduces the carbon emission in the air as well.
Burning coal creates around 800 to 1250 grams of CO2 per kilowatt hour and burning natural gas creates about 360 to 575 grams of CO2 per kilowatt hour. Meanwhile, solar power only ranges from about 43 to 73 grams of C02 per kilowatt hour. Solar power is 16 times as efficient as coal power and 7 times as efficient as natural gas, showing the large scale decrease in carbon.
Although geothermal energy greatly reduces carbon emissions, geothermal power still uses a lot of water in its processes. This can lead to debris such as air, water and ground, including sulfur dioxide and silica discharges, both of which can harm the environment if not properly controlled.
Wind energy can pose a massive hazard to local bird populations. Wind turbines kill an estimated 140,000 to 328,000 birds each year in North America, making it the most threatening form of green energy. This can lead to adverse effects on ecological balances in the environment.
Compounds like cadmium and lead can be found in the makeup of solar panels, both of which are highly toxic compounds. Solar panels can also contain gallium arsenide, copper-indium-gallium-diselenide, hydrochloric acid, sulfuric acid, nitric acid, and hydrogen fluoride during production, all of which can also volatile.