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'''Energy efficiency''' the use of less energy to provide the same service or, alternatively, to the generation of more service per unit of energy used.
[[Category:Lyon Prep Kit]]
[[Category:Economic Dimension]]
[[Category:Technological Dimension]]
[[Category:Environmental Dimension]]
[[Category:Foreign Policy & Security Dimension]]
[[Category:Societal Dimension]]
[[Category:Lyon:ECON II]]
[[Category:Lyon:ITRE I]]