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  2. Efficient energy use - Wikipedia

    en.wikipedia.org/wiki/Efficient_energy_use

    Efficient energy use, or energy efficiency, is the process of reducing the amount of energy required to provide products and services. There are many technologies and methods available that are more energy efficient than conventional systems. For example, insulating a building allows it to use less heating and cooling energy while still ...

  3. Energy-related products - Wikipedia

    en.wikipedia.org/wiki/Energy-related_products

    Energy-related products. Energy-related products (ErP) are products that use energy, or that do not use energy but have an indirect impact on energy consumption, such as water using devices, building insulation products, windows, etc. Compared to ErP, energy-using products (EuP) are products which are dependent on energy input (electricity etc.).

  4. European Union energy label - Wikipedia

    en.wikipedia.org/wiki/European_Union_energy_label

    It means, for example, that a fridge that currently has the A+++ label could become a C category, even though the fridge is just as energy efficient as before. The main principle is that the A category will be empty at first, and B and C categories scarcely populated, to pave way for new, more energy efficient products to be invented and developed.

  5. Energy conservation - Wikipedia

    en.wikipedia.org/wiki/Energy_conservation

    v. t. e. Energy conservation is the effort to reduce wasteful energy consumption by using fewer energy services. This can be done by using energy more effectively (using less energy for continuous service) or changing one's behavior to use less service (for example, by driving less). Energy conservation can be achieved through efficient energy ...

  6. Sustainable energy - Wikipedia

    en.wikipedia.org/wiki/Sustainable_energy

    For example, they can shift to low-emission energy sources, improve energy efficiency, or reduce their use of energy-intensive products and services. [234] Carbon pricing has encountered strong political pushback in some jurisdictions, whereas energy-specific policies tend to be politically safer.

  7. Renewable energy - Wikipedia

    en.wikipedia.org/wiki/Renewable_energy

    Renewable energy (or green energy) is energy from renewable natural resources that are replenished on a human timescale. The most widely used renewable energy types are solar energy, wind power, and hydropower. Bioenergy and geothermal power are also significant in some countries. Some also consider nuclear power a renewable power source ...