The world battle against climate change has emboldened both developed and developing nations to lessen carbon dioxide emissions. Signatories of the Kyoto Protocol lead the world to emission lessening activities, one of which is implementing 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
Hydro power is the biggest source of renewable energy. Its generating capacity amounts to 77,000 megawatts. Water coming from rivers and waterfalls are released through turbines to produce energy. Although the technology is non-pollutant, it can possibly harm marine wildlife as it may alter the quality of water. Other than that, hydro-power is also highly costly and is likely to take a long time to set up.
2. Biomass
The International Energy Agency reports 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 converted to gas by burning it in a gas turbine. In the United States, mill implementations are the basic source of biomass energy. It is the best alternative to coal as it produces less sulfur dioxide.
3. Geothermal Energy
Between the six types of renewable energy sources, geothermal is one of the most cost-effective and trustworthy. In the United States alone, it evolves up to 2,800 megawatts of energy every year which is roughly 2% of the total energy use in the country. Geothermal energy is generated 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. Nevertheless, the same technology is employed on a smaller scale to power building heaters.
4. Wind Energy
Wind energy produces 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 determined by the size of turbine. Small wind turbines are generally used to power households, farms and ranches in the country. The downside to this technology is the clamour that it produces and its comparatively expensive installation price.
5. Photovoltaic Cells
Photovoltaic cell is one among the six types of renewable energy sources that does not need high support. 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 generally 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 technologies, as the name implies, also gain energy from sunlight. The system uses 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 encourages 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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