Energy efficiency reduces the amount of primary energy needed to provide final energy in the form of electricity and heat. In Europe both for electricity and heat generation still mainly fossil fuels are used. Energy efficiency in final consumption is therefore directly reflected in the primary energy consumption of fossil fuels. Energy efficiency can also lead to an extension of the range of fossil fuels used and to a conversion to fossil fuels with lower primary energy factors. Thus, saving of fossil fuels includes other benefits such as GHG savings, import dependency and supplier diversity.
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