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  2. Renewable energy in the Philippines - Wikipedia

    en.wikipedia.org/wiki/Renewable_energy_in_the...

    In 2013, renewable energy provided 26.44% of the total electricity in the Philippines and 19,903 gigawatt-hours (GWh) of electrical energy out of a total demand of 75,266 gigawatt-hours. [1] The Philippines is a net importer of fossil fuels. For the sake of energy security, there is momentum to develop renewable energy sources.

  3. Waste-to-energy - Wikipedia

    en.wikipedia.org/wiki/Waste-to-energy

    Waste-to-energy (WtE) or energy-from-waste (EfW) refers to a series of processes designed to convert waste materials into usable forms of energy, typically electricity or heat. As a form of energy recovery, WtE plays a crucial role in both waste management and sustainable energy production by reducing the volume of waste in landfills and ...

  4. Biogas - Wikipedia

    en.wikipedia.org/wiki/Biogas

    Biogas is a gaseous renewable energy source [1] produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste, wastewater, and food waste. Biogas is produced by anaerobic digestion with anaerobic organisms or methanogens inside an anaerobic digester , biodigester or a bioreactor .

  5. Sustainable energy - Wikipedia

    en.wikipedia.org/wiki/Sustainable_energy

    These impacts range from greenhouse gas emissions and air pollution to energy poverty and toxic waste. Renewable energy sources such as wind, hydro, solar, and geothermal energy can cause environmental damage but are generally far more sustainable than fossil fuel sources. The role of non-renewable energy sources in sustainable energy is ...

  6. Renewable natural gas - Wikipedia

    en.wikipedia.org/wiki/Renewable_natural_gas

    Renewable natural gas can be produced and distributed via the existing gas grid, making it an attractive means of supplying existing premises with renewable heat and renewable gas energy. Renewable natural gas can also be converted into liquefied natural gas (LNG) or compressed natural gas (CNG) for direct use as fuel in transport sector.

  7. Refuse-derived fuel - Wikipedia

    en.wikipedia.org/wiki/Refuse-derived_fuel

    Continuous use of various waste-derived alternative fuels then followed in the mid-1980s with “Brennstoff aus Müll“ (BRAM) – fuel from waste – in the Westphalian cement industry in Germany. At that time the thought of cost reduction through replacement of fossil fuels was the priority as considerable competition pressure weighed down ...

  8. Landfill gas utilization - Wikipedia

    en.wikipedia.org/wiki/Landfill_Gas_Utilization

    The use of landfill gas is considered a green fuel source because it offsets the use of environmentally damaging fuels such as oil or natural gas, destroys the heat-trapping gas methane, and the gas is generated by deposits of waste that are already in place. 450 of the 2,300 landfills in the United States have operational landfill gas ...

  9. Renewable energy in developing countries - Wikipedia

    en.wikipedia.org/wiki/Renewable_energy_in...

    The Philippines could be considered a world leader in renewable energy, with its 30 percent of its power generation being powered by the renewable energy sector. The Philippines is the world's second largest generator of geothermal energy [25] and was the first Southeast Asian nation to invest in large-scale solar and wind technologies. [22]