Primary Energy Factor Definition

Primary energy pe is an energy form found in nature that has not been subjected to any human engineered conversion process.

Primary energy factor definition.

The definition in en iso 52000 1 is primary energy is energy that has not been subjected to any conversion or transformation process. The role of the primary energy factor pef in determining the energy performance of buildings in this bpie policy brief publication. Approaches for definition of primary energy differ in eu member states. Bpie argues that the current approach using the primary energy factors pefs is detrimental to.

Sap uses primary energy factors to convert the calculated energy requirements of a dwelling into a primary energy demand figure. The use of primary energy factor pef was chosen by european union policy makers as an obligatory part of methodology for comparing the primary energy consumption of products using different energy sources. Due to the fact that the target is defined on primary energy level the primary energy factor pef that is applied for electricity is a crucial aspect. More background on primary energy factors in relation to the energy performance of buildings directive epbd and relevant cen standards is given in chapter 2.

It is energy contained in raw fuels and other forms of energy received as input to a system primary energy can be non renewable or renewable. Primary energy factors on the building practices in european countries. A more detailed description can be found in the sap 2016 consultation paper consp 072. Where primary energy is used to describe fossil fuels the embodied energy of the fuel is available as thermal energy and.

The fuels in primary energy are all primary fuels a country s different sources of primary energy are aggregated into a quantity called total primary energy supply tpes. To reduce eu primary energy consumption in 2020 by 20 in compari son to a given baseline development. This amounts to total required savings of 368 mtoe. Our findings on the primary energy factors used by a number of european countries are discussed in chapter 3.

Bpie proposes using delivered energy as the main building performance indicator to determine and set requirements for its energy performance. Method and sources this section outlines the process used to derive the primary energy factors in sap. Primary energy is reported in energy content terms such as gj or kwh.