The content on this page was translated automatically.
NWG Cost Function for Lighting Systems
This document provides practical cost estimates for modern LED lighting systems in non-residential buildings. The values are based on lighting calculations, current market prices, and the requirements of the BEG EM. A supplementary Excel file makes it easy to apply the cost estimates for economic feasibility analyses in EBN consulting reports.
GEG / EnEV calculation aids and information
As of December 31, 2023, the calculation methods implemented in the calculation tools—DIN V 4108-6 and DIN V 4701-10—will no longer be permitted for energy assessments under the Building Energy Act (documentation, issuance of energy performance certificates)!
The Excel tool may still be used for preliminary calculations or energy assessments not relevant to the Building Energy Act.
GEG 2023 calculation aids
The verification procedure for residential buildings in accordance with the Building Energy Act 2023 is available as part of a calculation tool based on Microsoft Excel. The tool is based on the calculation methods from DIN V 4108-6 and DIN V 4701-10.
With version number 4, the transition from GEG 2020 to GEG 2023 was implemented with the calculation sheet in January 2023. The main changes compared to the GEG 2023 version can be summarized as follows
Tightening of the QP new build requirements from QP,reference * 0.75 to QP,reference * 0.55
Abolition of the "simplified procedure" for crediting electricity from renewable energies (GEG § 23)
Interface for the creation/registration of energy certificates in accordance with GEG (print application version 4.0; installation is a prerequisite for using this function)
Information on the control file schema for energy certificates can be found at https://www.dibt.de/de/wir-bieten/geg-registrierstelle.
GEG 2020 calculation aids
The verification procedure for residential buildings in accordance with the Building Energy Act 2020 is available as part of a calculation tool based on Microsoft Excel. The tool is based on the calculation methods from DIN V 4108-6 and DIN V 4701-10.
With version number 3, the transition from the EnEV to the GEG was implemented with the calculation sheet in July 2021. The main changes compared to the EnEV 2016 version can be summarized as follows
- Calculation and disclosure of greenhouse gas emissions
Thermal bridge correction value in accordance with DIN 4108, supplement 2, category B
- Crediting of electricity from renewable energies (GEG § 23)
- Information on the use of renewable energies for heating and cooling (GEG Section 4)
- Presentation ofCO2 equivalents for sample systems
- Interface for the creation/registration of energy certificates in accordance with GEG (print application version 3.0; installation is a prerequisite for using this function)
Information on the control file schema for energy performance certificates can be found at https://www.dibt.de/de/wir-bieten/geg-registrierstelle.
EnEV-2014/2016 calculation aids
For the calculation method for residential buildings in accordance with the Energy Saving Ordinance 2014/2016 (DIN V 4108-6/DIN V 4701-10, reference building method), a calculation aid based on Microsoft Excel is available here (monthly balance method, reference building method).
New version 2.xx:
- completely revised version
- new layout
- detailed instructions
- Saving/loading projects
- area calculation
- U-value calculation
- Display of monthly values
From version 2.08, the control file schema(https://www.dibt.de/de/wir-bieten/geg-registrierstelle), which has been changed since June 2016 and is to be used exclusively since July 1, 2017, is taken into account.
EnEV 2009 calculation aids
A calculation aid based on Microsoft Excel is available here for the calculation method for residential buildings in accordance with the Energy Saving Ordinance 2009 (DIN V 4108-6/DIN V 4701-10, reference building method).
Note
The documents and calculation aids are provided free of charge.
Support (hotline) is therefore not included.
Please refrain from making telephone inquiries about program operation. As these are not professional software products, no liability can be accepted for error-free operation.