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  2. European Union energy label - Wikipedia

    en.wikipedia.org/wiki/European_Union_energy_label

    A new energy label, introduced in 2010, is based on the energy efficiency index (EEI), and has energy classes in the range A+++ to D. [11] The EEI is a measure of the annual electricity consumption, and includes energy consumed during power-off and standby modes, and the energy consumed in 220 washing cycles. For the washing cycles, a weighted ...

  3. Low-energy house - Wikipedia

    en.wikipedia.org/wiki/Low-energy_house

    Reduction of energy consumption is more environmentally and financially advantageous than increasing onsite production to reach a low-energy goal. The less a home consumes, the smaller renewable-energy system it requires to reach net zero. Energy efficiency should always be the primary design strategy of a low-energy house. [1]

  4. Minimum energy performance standard - Wikipedia

    en.wikipedia.org/wiki/Minimum_energy_performance...

    MEPS and energy rating labels help improve the energy efficiency of our [who?] products, and enable consumers to choose products that use less energy. Products covered by MEPS must meet or exceed set levels for energy performance before they can be sold to consumers. MEPS have been updated over the years (2002, 2003, 2004, 2008, 2011) to cover ...

  5. Efficient energy use - Wikipedia

    en.wikipedia.org/wiki/Efficient_energy_use

    Common energy efficiency label on appliances to indicate their energy efficiency in a clear manner. 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.

  6. Energy conservation - Wikipedia

    en.wikipedia.org/wiki/Energy_conservation

    Measurable energy conservation and efficiency gains in the 1980s led to the 1987 Energy Security Report to the President (DOE, 1987) that "the United States uses about 29 quads less energy in a year today than it would have if our economic growth since 1972 had been accompanied by the less- efficient trends in energy use we were following at ...

  7. Energy conversion efficiency - Wikipedia

    en.wikipedia.org/wiki/Energy_conversion_efficiency

    The electrical energy input of this cell is 1.20 times greater than the theoretical minimum so the energy efficiency is 0.83 compared to the ideal cell. A water electrolysis unit operating with a higher voltage that 1.48 V and at a temperature of 25 °C would have to have heat energy removed in order to maintain a constant temperature and the ...

  8. EnergyGuide - Wikipedia

    en.wikipedia.org/wiki/EnergyGuide

    [4] The first appliance labeling rule was established in 1979 and all products were required to carry the label starting in 1980. Energy Star is a similar labeling program, but requires more stringent efficiency standards for an appliance to become qualified, and is not a required program, but rather a voluntary one.

  9. Energy-related products - Wikipedia

    en.wikipedia.org/wiki/Energy-related_products

    The goal is the reduction of energy along the supply chain: from the design stage throughout production, transport, packaging and so on. Products that comply with this directive are easily recognized by carrying the CE marking. In this case, the CE mark covers product safety and energy efficiency requirements. [1]