The universal battle against climate change has promoted both developed and developing nations to reduce carbon dioxide emission. Signatories of the Kyoto Protocol lead the world to emanation lessening acts, one of which is conducting research and development on renewable energy (see solar charger reviews). Here are six types of renewable energy sources that are being determined to power the globe in the nearest future.
1. Hydroelectric Power
Hydropower is the biggest source of renewable energy. Its evolving capacity amounts to 77,000 megawatts. Water coming from rivers and waterfalls are released through turbines to generate energy. Although the technology is non-pollutant, it can possibly harm marine wildlife as it may alter the quality of water. Other than that, hydropower is also highly expensive and is likely to take a long time to install.
2. Biomass
The International Energy Agency states that 11% of the global’s renewable energy is gained from biomass. The technology generates 7,000 megawatts of renewable energy. Biomass is taken from industrial processing of forestry and wood products, agriculture, construction and solid waste. These biodegradable materials are turned into gas by burning it in a gas turbine. In the United States, mill operations are the basic source of biomass energy. It is the best alternative to coal as it generates less sulfur dioxide.
3. Geothermal Energy
Among the six types of renewable energy sources, geothermal is one of the most cost-effective and safe. In the United States alone, it evolves up to 2,800 megawatts of energy every year which is roughly 2% of the total energy consumption in the country. Geothermal energy is produced from naturally occurring steam under the Earth’s surface. Steam is extracted to power a turbine which in turn powers an electric generator. The problem with geothermal energy is the difficulty to find viable land sites. However, the same technology is employed on a smaller scale to power building heaters.
4. Wind Energy
Wind energy generates 2,500 megawatts of energy that contains 1% of the total electricity use in the United States. The wind revolves the blade that is fixed to a main shaft where a generator is installed. Energy capacity is identified by the size of turbine. Small wind turbines are commonly used to power households, farms and ranches in the country. The downside to this technology is the blare that it generates and its comparatively expensive installation price.
5. Photovoltaic Cells
Photovoltaic cell is one among the six kinds of renewable energy sources that does not require high care. It basically produces electricity by utilizing microchip-like materials that absorbs sunlight. This frees the electrons from their atoms and allows them to produce electricity. PV cells are commonly safe and provide less to none pollution. There are some popular backpacks that use this technology, see solar backpack reviews for details.
6. Solar Thermal Systems
Solar thermal systems, as the name implies, also draw energy from sunlight. The system utilizes solar collectors to absorb solar radiation that will then be used to heat water or air that will produce steam used to operate a turbine. The turbine will then power a generator.
Federal and state government support citizens to install solar energy at home or in the workplace by awarding income tax credits. The same is being done for the other six types of renewable energy sources.
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