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.

Primary energy factor definition.

Primary energy factors on the building practices in european countries. 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. Primary energy pe is an energy form found in nature that has not been subjected to any human engineered conversion process. 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. There are several internationally recognised definitions for primary and secondary energy. Primary energy is the energy that s harvested directly from natural resources sources of primary energy fall into two basic categories primary fuels and primary energy flows see fuel vs flow for a detailed discussion. Our findings on the primary energy factors used by a number of european countries are discussed in chapter 3.

The role of the primary energy factor pef in determining the energy performance of buildings in this bpie policy brief publication. The purpose of the primary energy factors pefs set out in annex iv of the eed is to assist member states to translate final energy savings into primary energy savings in the framework of article 3 energy efficiency targets and art 7 energy efficiency obligation schemes. 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. To reduce eu primary energy consumption in 2020 by 20 in compari son to a given baseline development.

Approaches for definition of primary energy differ in eu member states. 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. 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.

This amounts to total required savings of 368 mtoe. 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. Bpie proposes using delivered energy as the main building performance indicator to determine and set requirements for its energy performance.