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  2. Renewable energy - Wikipedia

    en.wikipedia.org/wiki/Renewable_energy

    Renewable energy in developing countries is an increasingly used alternative to fossil fuel energy, as these countries scale up their energy supplies and address energy poverty. Renewable energy technology was once seen as unaffordable for developing countries. [ 201 ]

  3. Hybrid power - Wikipedia

    en.wikipedia.org/wiki/Hybrid_power

    Hybrid renewable energy systems are becoming popular as stand-alone power systems for providing electricity in remote areas due to advances in renewable energy technologies and subsequent rise in prices of petroleum products. A hybrid energy system, or hybrid power, usually consists of two or more renewable energy sources used together to ...

  4. Energy transition - Wikipedia

    en.wikipedia.org/wiki/Energy_transition

    An energy transition is a broad shift in technologies and behaviours that are needed to replace one source of energy with another. [14]: 202–203 A prime example is the change from a pre-industrial system relying on traditional biomass, wind, water and muscle power to an industrial system characterized by pervasive mechanization, steam power and the use of coal.

  5. Energy engineering - Wikipedia

    en.wikipedia.org/wiki/Energy_engineering

    Solar panels, a tool for harnessing renewable energy Wind turbines, a tool for harnessing renewable energy. Energy engineering is a multidisciplinary field of engineering that focuses on optimizing energy systems, developing renewable energy technologies, and improving energy efficiency to meet the world's growing demand for energy in a sustainable manner.

  6. Sustainable energy - Wikipedia

    en.wikipedia.org/wiki/Sustainable_energy

    Energy storage helps overcome barriers to intermittent renewable energy and is an important aspect of a sustainable energy system. [154] The most commonly used and available storage method is pumped-storage hydroelectricity, which requires locations with large differences in height and access to water. [154]

  7. 100% renewable energy - Wikipedia

    en.wikipedia.org/wiki/100%_renewable_energy

    100% renewable energy is an energy system where all energy use is sourced from renewable energy sources. The endeavor to use 100% renewable energy for electricity, heating/cooling and transport is motivated by global warming, pollution and other environmental issues, as well as economic and energy security concerns.