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A focus on energy efficiency can also have a national security benefit because it can reduce the amount of energy that has to be imported from other countries. Energy efficiency and renewable energy go hand in hand for sustainable energy policies. [3] They are high priority actions in the energy hierarchy.
REEEP—Renewable Energy and Energy Efficiency Partnership; RER—Renewable Energy Rider; RES—Renewable energy source; RET/EE—IAF Renewable Energy Technology & Energy Efficiency Investment Advisory Facility; RF—Radio frequency; RFA—Regulatory Flexibility Act (US) RFC—ReliabilityFirst Corporation (US) (electricity) RFG—reformulated ...
Efficiency is the often measurable ability to avoid making mistakes or wasting materials, energy, efforts, money, and time while performing a task. In a more general sense, it is the ability to do things well, successfully, and without waste.
Mechanical efficiency, where one form of mechanical energy (e.g. potential energy of water) is converted to mechanical energy ; Thermal efficiency or Fuel efficiency, useful heat and/or work output per input energy such as the fuel consumed; 'Total efficiency', e.g., for cogeneration, useful electric power and heat output per fuel energy ...
A premium efficiency electric motor: more than 90% (see Main Article: Premium efficiency). A large power transformer used in the electrical grid may have efficiency of more than 99%. Early 19th century transformers were much less efficient, wasting up to a third of the energy passing through them. [citation needed]
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Energy-efficiency standards have been expanded and strengthened for appliances, building equipment, and lighting. For example, appliances and equipment standards are being developed for a new range of devices, including reduction goals for "standby" power that keeps consumer electronic products in a ready-to-use mode. [10]
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