![]() Companies often don’t have access to all their primary data (yet), secondary data then functions to fill these gaps. In LCA terms this secondary data is called your ‘background system’. The LCI database gives you already existing (average) environmental background data on supply chains – without having to really dive into your raw supply chain data. EcoInvent is one of the main LCI databases in our footprint tools. In the case of LCA, this is called the Life Cycle Inventory database. These existing databases are made available for companies to use for their own research. The European Commission defines secondary data as “ data that is not directly collected, measured, or estimated, but rather sourced from a third-party life-cycle-inventory database” Secondary data, however, are already existing scientific databases collected by previous researchers. Read more about the specific data you need to make an LCA of a product here. In LCA terms this primary data is called your ‘foreground’ system. It includes all the necessary raw inputs of your product’s lifecycle that are then connected to corresponding impacts in an LCA. Yet, the best option is to ask for LCA’s of their products. ![]() To get this information, you can request inventory data from these important value chain stakeholders. However, often a large chunk of this data can be found at suppliers or distributors. You can collect this data using invoice bills (bookkeeping), metered data, manufacturing site visits, surveys, etc. Or how often your product is used by consumers. Or your exact purchased and used raw materials, your energy use, your waste processes, etc. raw data on the use phase of your product (how your product is used by consumers)įor example, think of the emissions that are directly related to a specific process.raw data from suppliers and distributors.Primary data is (highly) specific and accurate raw data that’s directly collected/measured from main sources. The European Commission defines primary data as “ directly measured or collected data representative of activities at a specific facility or set of facilities”. What’s the difference between primary & secondary data in LCA? Primary data: The ‘foreground’ system Why primary data is so important in LCAġ.The difference between primary and secondary data in LCA.This raw supply chain data is called primary data. And it’s crucial for credible footprint calculations. purchased raw materials) it’s trickier. How do you get to know the exact raw impact behind the specific materials you purchase? It’s information your suppliers hold. Much data can be found in your own finance or purchase department. Think of the energy usage for your manufacturing and waste processes, data on your purchased & used raw materials, etc. To make an LCA of your product(s) you need data.
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