Meaning of “energy-efficient” in the English Dictionary

"energy efficient" in Business English

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energy efficientadjective

uk us also energy-efficient NATURAL RESOURCES, ENVIRONMENT

used to describe things that use only as much energy as is needed without wasting any:

energy-efficient lighting/building/appliance The company has fitted energy-efficient lighting throughout the building.
energy-efficient technology/system
We need to become more energy efficient so that we don't generate power just to waste it.
energy efficiency
noun [ U ]

(Definition of “energy efficient” from the Cambridge Business English Dictionary © Cambridge University Press)