Article | REF: BE8517 V1

Grey energy

Author: Christian NGÔ

Publication date: August 10, 2017

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2. What is grey energy?

Some objects, such as a refrigerator or a car, consume energy when they are used: electricity for a refrigerator, gasoline or diesel for a car with an internal combustion engine. For the user, this is the energy needed to use the object throughout its life: this is operational energy. It is also sometimes referred to as direct energy.

Grey energy doesn't just concern objects. It also concerns products, especially foodstuffs, services and even the production of energy itself, since energy was required to manufacture the devices needed to produce it.

The manufacture of the object, its maintenance and end-of-life management also require a quantity of energy that is rarely taken into account, as it is the responsibility of external economic agents such as the manufacturer,...

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