Sustainable only if reservoirs are properly managed.
In extreme cases geothermal power plants may cause earthquakes.
Reliable and predictable source of energy.
Creates smaller amounts of CO2 and sulfur components than fossil fuels.
Byproducts of coal mining include arsenic, SO2, selenium, and mercury.
The burning of coal emits CO2, SO2, toxic heavy metals, cadmium, arsenic, and mercury.
Can potentially pollute the air, soil, and water bodies.
“Clean coal” technology can remove harmful material before it reaches the environment.
Currently, production costs are more than that of fossil fuel.
Although they have less carbon footprint, biofuels increase footprint through cultivation and harvest of crop, in addition to the destruction of forests for crop plantation.
A great amount of the energy used to produce biofuels comes from fossil fuels.
A great amount of energy and water is necessary to grow crops, produce fertilizers and pesticides, and transform plants into biofuel.
Ashes from biofuels may contain harmful metals, such as cadmium and lead.
Biodiesel creates more nitrogen oxide than diesel from petroleum.
Pollute less than fossil fuels during burning.
Made from different sources (ethanol, biodiesel, biomass, wood chips, municipal waste, among others).
In addition, a thorough analysis of what our planet will look like after the full adoption of these technologies is of utmost importance so future generations are not left in a deadlock.īelow is a list of some of the pros and cons of different types of energy. Technologies that are clean as they operate but have a great impact on the environment when they are manufactured (especially regarding emission of potent greenhouse gases) need more research before being widely adopted. This means that we need to invest in the least polluting technologies, both during the manufacturing of parts and operation, and combine them with technologies that, for example, capture CO2 from the environment and/or emission source. You will be surprised to see that, during the manufacturing of parts, some green technologies may pollute and increase the greenhouse effect more than traditional energy sources. However, all of them have an impact on the environment. Some energy sources are cleaner than others.
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