The position taken by EFIEES on the proposed method for calculating the primary energy factor (PEF) for electricity
EFIEES supports the approach taken by the European Commission, which aims to use a revised method for calculating the primary energy factor (PEF) for electricity in a more rigorous and transparent manner. This will make it better adapted to the realities of European markets. The EFIEES takes the following view:
- Various European policies require the use of varying PEFs: a single PEF on a European level may be acceptable when applied to texts relating to products, but is completely unacceptable for texts relating to buildings.
• Effectively the PEF strongly depends on the geographical zone in which the building is located and the seasonality of needs. Hence, in order to calculate a building’s energy performance, as a minimum the seasonal PEFs calculated at a national level must be used.
• The averaging method cannot be used for new buildings which use negligible energy production.
• The PEFs need to be calculated using reliable actual data, not unreliable projections.
• Self-consumed renewable electricity is not available on the network and cannot be taken into account when calculating the PEF.
• The PEF for electricity produced by cogeneration should give rise to additional work in order to rigorously reflect primary energy savings.
• As we explain here, the purpose of PEFs is to compare the energy performance where several different power supplies are being used. The PEF needs to represent the situation sufficiently well to allow for the comparison of primary energy on the basis of real-world conditions: in particular the geographical zones and consumption timescales. For buildings, a single PEF like the one planned will lead to incorrect results and hence will not direct deciders towards ideal solutions for energy efficiency.