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planning:tools:manufacturing_energy_evaluation_tool [2025/09/15 17:00] – [Using your own manufacturing data in MEET] mpatynaplanning:tools:manufacturing_energy_evaluation_tool [2025/10/15 15:43] (current) – [MEET: Manufacturing Energy Evaluation Tool] mpatyna
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 <sup>Fig. 1: Results of MEET in the worksheet BALANCE </sup> <sup>Fig. 1: Results of MEET in the worksheet BALANCE </sup>
  
-**Free Download* the [[https://database.passivehouse.com/en/download/product_page/MEET2|Manufacturing Energy Evaluation Tool 2 (MEET 2 beta)]] | ****Free Download* the [[https://database.passivehouse.com/en/download/product_page/MEET|outPHit Manufacturing Energy Evaluation Tool (MEET)]]**+**<fc #4682b4>Manufacturing Energy Evaluation Tool 2 (MEET 2 beta) is currently being revised.</fc> Download available here again after completion. | \\ ****Free Download* the [[https://database.passivehouse.com/en/download/product_page/MEET|outPHit Manufacturing Energy Evaluation Tool (MEET)]]**
  
 *<fs small>//Note: The download link will take you to the Passive House Portal, where you need to login in order to access the tools. Login details to the database may differ from your membership login details to Passipedia. Please [[https://database.passivehouse.com/en/accounts/signup/|sign up]] to the Passive House Portal in case you don't yet have an account. Registration to the Passive House Portal is free and can be canceled at any time. In case of questions contact info@passivehouse-international.org//</fs> *<fs small>//Note: The download link will take you to the Passive House Portal, where you need to login in order to access the tools. Login details to the database may differ from your membership login details to Passipedia. Please [[https://database.passivehouse.com/en/accounts/signup/|sign up]] to the Passive House Portal in case you don't yet have an account. Registration to the Passive House Portal is free and can be canceled at any time. In case of questions contact info@passivehouse-international.org//</fs>
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 With the introduction of the second version, the tool now offers enhanced functionality and a direct connection to the Passive House Planning Package (PHPP). Specifically, this means: With the introduction of the second version, the tool now offers enhanced functionality and a direct connection to the Passive House Planning Package (PHPP). Specifically, this means:
  
-  * **User-Friendly Material Selection**: The material input has been improved through an extensive building material list and a filtering mechanism. Additionally, the input for windows and doors has been made more intuitive.+  * **User-friendly material selection**: The material input has been improved through an extensive building material list and a filtering mechanism. Additionally, the input for windows and doors has been made more intuitive.
   * **Integration with PHPP**: MEET 2 is linked to PHPP 10, enabling a detailed determination of operational energy. All relevant energy data, as well as data on the composition of the building envelope, are transferred easily using an embedded interface sheet.   * **Integration with PHPP**: MEET 2 is linked to PHPP 10, enabling a detailed determination of operational energy. All relevant energy data, as well as data on the composition of the building envelope, are transferred easily using an embedded interface sheet.
-**As MEET 2 is currently in its beta stage, we invite you to try the tool with your PHPP 10.6 (or higher).**  Please contact us at [[tools@passiv.de?subject=MEET 2|tools[at]passiv.de]] to receive the **latest version of the interface sheet**. We look forward to your feedback! 
  
 +<WRAP round box>
 +**MEET 2 is currently in its beta phase and undergoing revision. It will be made available here again once the updates are complete.**  Contact: [[tools@passiv.de?subject=MEET 2|tools[at]passiv.de]]</WRAP>
 \\  \\ 
  
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   - **Model your project**  in PHPP (your usual workflow). \\ Remember to **define CO<sub>2</sub>  factors**  for your region in the “2-CO<sub>2</sub>  factors user-defined” sheet. Electricity mixes differ from country to country and are changing constantly. For Germany, for instance, we assumed a decarbonisation pathway over the next 40 years, with average values of 0.198 kg CO<sub>2e</sub>  /kWh for heating electricity (cold period) and 0.093 kg CO<sub>2e</sub>  /kWh for user/household electricity (all year round). Current developments, however, suggest that this assumption may even be somewhat too optimistic.   - **Model your project**  in PHPP (your usual workflow). \\ Remember to **define CO<sub>2</sub>  factors**  for your region in the “2-CO<sub>2</sub>  factors user-defined” sheet. Electricity mixes differ from country to country and are changing constantly. For Germany, for instance, we assumed a decarbonisation pathway over the next 40 years, with average values of 0.198 kg CO<sub>2e</sub>  /kWh for heating electricity (cold period) and 0.093 kg CO<sub>2e</sub>  /kWh for user/household electricity (all year round). Current developments, however, suggest that this assumption may even be somewhat too optimistic.
-  - **[[https://database.passivehouse.com/en/download/product_page/MEET2|Download MEET 2 (beta)]]**.+  - **[[|Download MEET 2 (beta) [download not active, tool is currently being revised]]]**.
   - **Request the interface worksheet**  (PHPP 10.6+) via the contact above. After receiving, transfer envelope + energy data to MEET:   - **Request the interface worksheet**  (PHPP 10.6+) via the contact above. After receiving, transfer envelope + energy data to MEET:
       - Use the interface worksheet macro to create the LCA Sheet in your PHPP.       - Use the interface worksheet macro to create the LCA Sheet in your PHPP.
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-==== Tips for Practice ====+==== Tips for practice ====
  
   * **Compare assemblies systematically**: In heating-dominated climates, transmission losses strongly correlate with total demand. Thus, create several possible options of thermal envelope components (walls, roofs, windows...) in PHPP, even if you don’t apply them in your PHPP project. In MEET, you can then evaluate how the manufacturing energy and resulting GWP relate to the theoretical transmission losses per m² of the component. You can find the comparison charts in the input sheets “Opaque assemblies” and “Windos&Doors” to the right. \\ For cooling-dominated climates, it is better to create PHPP variants and track the resulting outcomes of each variant.    * **Compare assemblies systematically**: In heating-dominated climates, transmission losses strongly correlate with total demand. Thus, create several possible options of thermal envelope components (walls, roofs, windows...) in PHPP, even if you don’t apply them in your PHPP project. In MEET, you can then evaluate how the manufacturing energy and resulting GWP relate to the theoretical transmission losses per m² of the component. You can find the comparison charts in the input sheets “Opaque assemblies” and “Windos&Doors” to the right. \\ For cooling-dominated climates, it is better to create PHPP variants and track the resulting outcomes of each variant. 
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   * **Global Warming Potential (GWP)**: For wood-based materials, MEET accounts for only **40% of the biogenic CO<sub>2</sub>  credit**, in line with current scientific recommendations. This avoids overly optimistic results while still reflecting the advantages of renewable resources. For other fast-growing biogenic materials such as straw, the full credit is retained.   * **Global Warming Potential (GWP)**: For wood-based materials, MEET accounts for only **40% of the biogenic CO<sub>2</sub>  credit**, in line with current scientific recommendations. This avoids overly optimistic results while still reflecting the advantages of renewable resources. For other fast-growing biogenic materials such as straw, the full credit is retained.
   * **Service life**: Manufacturing energy and GWP are expressed as **annualised **values, divided by the service life of the material or component.   * **Service life**: Manufacturing energy and GWP are expressed as **annualised **values, divided by the service life of the material or component.
 +
  
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-<WRAP round box> + 
 +<WRAP round box> 
 ===== Our method in a nutshell – scope, boundaries & data ===== ===== Our method in a nutshell – scope, boundaries & data =====
  
-  * **Comparable results**: We intentionally present the results annually (annuitized), enabling direct comparison with operational energy—even if assessment periods differ.  +  * **Comparable results**: We intentionally present the results annually (annuitized), enabling direct comparison with operational energy—even if assessment periods differ. 
-  * **Embodied indicators considered**: In addition to the **Global Warming Potential (GWP)**, we look at the **total manufacturing primary energy** (renewable + non-renewable). While GWP (as a measure of climate impact) heavily depends on local factors like the energy mix in the production country and can quickly change over time, manufacturing energy provides a more robust measure of production efficiency and is internationally more comparable. This avoids overlooking opportunities for energy savings, as **energy that is avoided does not need to be provided at all – whether fossil or renewable.** +  * **Embodied indicators considered**: In addition to the **Global Warming Potential (GWP)**, we look at the **total manufacturing primary energy**  (renewable + non-renewable). While GWP (as a measure of climate impact) heavily depends on local factors like the energy mix in the production country and can quickly change over time, manufacturing energy provides a more robust measure of production efficiency and is internationally more comparable. This avoids overlooking opportunities for energy savings, as **energy that is avoided does not need to be provided at all – whether fossil or renewable.** 
-  * **System boundary**: We focus on the **manufacturing stage** (**A1–A3**, as defined in EN 15804: raw material supply, transport, production) and the **use stage** (**B**, operation and replacement after completion of construction). These are the phases with the most relevant and reliably quantifiable impacts. Speculative scenarios far in the future (reuse, disposal, recycling) are excluded, as these are highly uncertain, especially considering anticipated advances in circular economy and renewable energies. Caloric energy (= energy stored in material: PENRM, PERM) is also not considered, as it is not decisive for ecological optimization within this context. The service life and thus the replacement need of the materials implicitly enters through the annual presentation of results. We recommend an assessment period of 40 years. While this is much shorter than the expected lifetime of a building, it represents a timeframe that can still be meaningfully assessed according to MEET’s method. +  * **System boundary**: We focus on the **manufacturing stage**  (**A1–A3**, as defined in EN 15804: raw material supply, transport, production) and the **use stage**  (**B**, operation and replacement after completion of construction). These are the phases with the most relevant and reliably quantifiable impacts. Speculative scenarios far in the future (reuse, disposal, recycling) are excluded, as these are highly uncertain, especially considering anticipated advances in circular economy and renewable energies. Caloric energy (= energy stored in material: PENRM, PERM) is also not considered, as it is not decisive for ecological optimization within this context. The service life and thus the replacement need of the materials implicitly enters through the annual presentation of results. We recommend an assessment period of 40 years. While this is much shorter than the expected lifetime of a building, it represents a timeframe that can still be meaningfully assessed according to MEET’s method. 
-  * **Adjusted wood biogenic credit**: Based on the current state of scientific literature, we apply a reduction of 60% to the CO2 credits usually attributed to **wood products**, thus **counting only 40% of the biogenic credit**. This adjustment ensures more realistic results while still considering the positive benefits of the material. For other fast-growing biogenic materials, such as straw, the full credit is retained, since these would otherwise release nearly all of their stored CO2e if not used as construction products. +  * **Adjusted wood biogenic credit**: Based on the current state of scientific literature, we apply a reduction of 60% to the CO<sub>2</sub>  credits usually attributed to **wood products**, thus **counting only 40% of the biogenic credit**. This adjustment ensures more realistic results while still considering the positive benefits of the material. For other fast-growing biogenic materials, such as straw, the full credit is retained, since these would otherwise release nearly all of their stored CO<sub>2e</sub>  if not used as construction products.
   * **Data sources**: MEET already includes a **comprehensive material database**. Values have been initially tailored to the German region (the ÖKOBAUDAT as a main source), but the manufacturing energy figures can also serve as a good-enough approximation for other regions. Compared to GWP, manufacturing energy shows far less variation between countries, making it a more reliable basis for international comparison.   * **Data sources**: MEET already includes a **comprehensive material database**. Values have been initially tailored to the German region (the ÖKOBAUDAT as a main source), but the manufacturing energy figures can also serve as a good-enough approximation for other regions. Compared to GWP, manufacturing energy shows far less variation between countries, making it a more reliable basis for international comparison.
   * **Adding your own data**: Standard databases such as ÖKOBAUDAT and third-party EPDs can be used, with manual recalculation where necessary to align with MEET’s method. See also the section [[#using_your_own_manufacturing_data_in_meet|above]].   * **Adding your own data**: Standard databases such as ÖKOBAUDAT and third-party EPDs can be used, with manual recalculation where necessary to align with MEET’s method. See also the section [[#using_your_own_manufacturing_data_in_meet|above]].
- </WRAP>+</WRAP>
  
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 ==== Further reading on this topic ==== ==== Further reading on this topic ====
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 [[https://outphit.eu/en/resources/outphit-outcomes/|outPHit outcomings]] [[https://outphit.eu/en/resources/outphit-outcomes/|outPHit outcomings]]
 +
 +Report from Passive House Accelerator [[https://passivehouseaccelerator.com/articles/meet-a-new-tool-for-embodied-energy-calculations|MEET: A New Tool for Embodied Energy Calculations]]
  
 **Click [[..:tools|Tool ]] to get back to the Passive House tool overview** **Click [[..:tools|Tool ]] to get back to the Passive House tool overview**
  
  
planning/tools/manufacturing_energy_evaluation_tool.1757948430.txt.gz · Last modified: by mpatyna