{"id":22787,"date":"2026-08-18T11:14:23","date_gmt":"2026-08-18T09:14:23","guid":{"rendered":"https:\/\/ecochain.com\/?p=22787"},"modified":"2026-08-18T11:14:23","modified_gmt":"2026-08-18T09:14:23","slug":"6-ways-to-calculate-product-footprints-manufacturing","status":"publish","type":"post","link":"https:\/\/ecochain.com\/nl\/blog\/6-ways-to-calculate-product-footprints-manufacturing\/","title":{"rendered":"LCA consulting vs software vs DIY: 6 ways to calculate product footprints and how to choose the right one"},"content":{"rendered":"<h2><span style=\"font-weight: 400;\">Summary (TL;DR) of what this blog covers<\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Manufacturers often calculate product footprints in one of six ways: using generic or sector-average data, outsourcing to an LCA consultancy, buying AI-first software, investing in expert LCA software that needs an in-house specialist on payroll, buying LCA automation software combined with expert service, or taking a DIY approach with spreadsheets.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Sustainability and product teams often settle on one approach that becomes the default for years, long after it stopped serving them. What decides whether you chose the best approach for your business is whether you repeat the work every time. That comes down to what you keep at the end: a one-off product footprint report you can&#8217;t adjust or reuse, or a model you can update and reuse for multiple requests.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">This guide is about the pros and cons of each approach and when each one fits, rather than methodology choices like system boundaries or impact assessment methods. It also includes 12 questions to ask before you decide on your product footprinting approach.<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400;\">How manufacturers end up choosing a way to calculate product footprints<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Very few sustainability managers evaluate six options and pick one.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">What usually happens is that a request lands with a deadline attached. It might be a construction tender asking for a verified EPD. It might be an OEM customer sending a Scope 3 questionnaire, a retailer asking for carbon data before a listing decision, an R&amp;D team wanting to compare two materials, or a regulatory deadline under CPR or ESPR that someone has just noticed. Sometimes it&#8217;s a single large customer who has decided their suppliers need product-level data by Q3.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><i><span style=\"font-weight: 400;\">New to the terminology? Start with <\/span><\/i><a href=\"https:\/\/ecochain.com\/blog\/epd-pcf-lca-dpp-differences-and-use-cases-for-manufacturers\/\"><i><span style=\"font-weight: 400;\">the difference between LCA, EPD, PCF and DPP<\/span><\/i><\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">Whatever triggered it, it&#8217;s normal to reach for whatever gets you the number in time. For most teams that becomes the default, and two years on you&#8217;re still using it \u2013 even though the market has moved, your business has grown, and the portfolio you now need footprints for is far bigger than it was.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Choosing the right option comes down to being realistic about your in-house resources and needs, how many product footprint requests you expect over the next two to three years, and whether you can afford to start from scratch each time.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Below we outline six ways to calculate the environmental footprint of what you manufacture, with the pros and cons of each, how they work in practice, and when each one works best.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Quick comparison: 6 ways to get your product footprints calculated<\/span><\/h2>\n<table>\n<thead>\n<tr>\n<th><b>Approach<\/b><\/th>\n<th><b>Who it suits<\/b><\/th>\n<th><b>When to choose it<\/b><\/th>\n<th><b>Pros<\/b><\/th>\n<th><b>Cons<\/b><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><b>1. LCA consultancy<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Best for teams that need expert-led, defensible LCA results for complex products or one-off studies without building specialist capability in-house.\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">The product is unusually complex. You need expert judgment and a credible study without building internal capability or a repeatable system. You have a budget of approx. \u20ac5,000\u2013\u20ac10,000 per product footprint.\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">You get strong outsourced expertise (no internal capability needed). You get someone who can handle difficult methodology choices. Less internal burden.\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">The model usually stays with the consultancy so you have no control over data and results. Costly (can get into million ranges for big portfolios). Slower than software-led workflows for short-notice requests. Limited scalability across many products.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>2. Expert LCA software with in-house specialist (e.g., OpenLCA, SimaPro, Sphera)<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Best for teams that need maximum methodological control and have an experienced LCA practitioner to build and manage the calculations in-house.\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">You perform LCAs regularly, use advanced or unusual methodologies, and need full control over assumptions and models.\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Maximum control. Transparent assumptions. Strong for advanced work.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Requires specialized LCA expertise and internal data ownership. Setup takes time. Resource-intensive (becomes a headcount decision). Can become a bottleneck if one person owns everything.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>3. LCA automation software with on-demand expert service (e.g., Ecochain)<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Best for teams that want scalable product footprinting with full in-house ownership, without having to build everything themselves or outsource every update to a consultancy.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">You have recurring calculations across multiple products and want a reusable model with expert support when questions or methodology decisions arise.\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Reusable model. Your business runs it in-house after setup. Efficient for recurring calculations. Combines software speed with expert review. Verification support built in (with Ecochain).\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Requires data ownership by your business. Best value comes with ongoing volume. Over-built for a single one-off EPD.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>4. AI-first LCA software\u00a0<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Best for teams that want rapid early-stage estimates before investing in a more accurate LCA work.\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">You need to compare options quickly, identify hotspots, or decide which products require a deeper assessment.\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Very fast. Helps prioritize which products need full LCAs. Can cover many SKUs.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Often hallucinated and unverified data. Hard to validate. Impact categories apart from carbon are not always supported. Rarely accepted by verifiers. Weak basis for an external claim.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>5. Generic or sector-average data<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Best for teams that need a quick directional estimate before product-specific data or budget is available.\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">A deadline is close, product data is missing, and the result will only guide an early decision.\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Fast to access, low effort, useful for first-pass estimates\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Low accuracy for product decisions. Weak for claims or audits. Not suitable when product-specific data matters and erases any advantage your product has. Not maintainable long term.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>6. DIY using spreadsheets (e.g., Excel or Google Sheets)<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Best for teams that need a low-cost, flexible way to build simple internal calculations and already have the time and LCA knowledge to manage them.\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">The scope is limited, the calculation is for internal use, you can accept the extra effort required for checking and maintenance, and you\u2019re comfortable building the formulas.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">No software licence or consultancy cost. Every formula is visible and data control stays with you. No vendor dependency.\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Usually only the author understands the file. Updates are manual and the risk of errors is high. Hard to audit. Poor scalability. Difficult to verify or standardize.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span style=\"font-weight: 400;\"><strong>Approach 1:<\/strong> Outsourcing product footprint calculations to an LCA consultancy \u2013 best for one-off deep studies and complex products<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Outsourcing to an LCA consultancy means an external team runs the assessment for you. They collect data with your staff, make the methodology decisions, sometimes even manage the verifier relationship, and deliver a finished study or published EPD.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Your team supplies production data, answers questions and reviews the results. The consultancy provides the specialist expertise, software and modelling capacity.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">How it works in practice<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">You brief the consultancy on the product, intended use and standard or programme you need to meet. They send a data request, usually covering materials, energy, transport, packaging, manufacturing processes and waste.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Your team collects and provides the data, often over several weeks. The consultancy then asks follow-up questions, builds the product system, selects background datasets, applies allocation rules and calculates the environmental impacts.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If you need an EPD, the consultancy may also coordinate the verification and programme operator submission. Once the process is complete, you receive the study, EPD or other agreed output.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">For products with long bills of materials, multi-stage process chemistry or difficult allocation questions, this can be a practical route to a defensible result. You are buying external expert judgement and delivery capacity rather than building that capability yourself.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Best for<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Teams that need expert-led, defensible results for complex products or one-off studies without building specialist capability in-house. It suits companies with a small number of high-value products, an unusual methodology question, or a specific customer, tender or compliance requirement. A consultancy is also a sensible way to complete a first EPD and understand what a robust process looks like before deciding how to scale.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">On budget, expect roughly \u20ac5,000\u2013\u20ac10,000 per product footprint. The exact cost depends on the product, data quality, scope, number of products, required impact categories, and verification and publication requirements, so treat the range as an indication rather than a standard market price.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Where it falls short<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The LCA model, assumptions and calculation structure may remain with the consultancy. You receive the output, but you may not receive a reusable model your own team can update. This depends on the contract, so it is worth asking in advance:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Who owns the model and underlying files?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Which software and databases were used?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Can your team access and reuse the model?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">What happens when a material, supplier or manufacturing process changes?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">What will future updates cost?<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This becomes especially important as your portfolio grows, because total cost tends to track portfolio size fairly closely when nothing carries over between studies.<\/span><\/p>\n<p><strong>Here are 4 specific examples from our recent conversations with manufacturers that might help you understand where LCA consultancy can fall short:<\/strong><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">One US manufacturer described a consultant-led EPD process running 12 to 18 months at roughly $11,000 per EPD, which was delaying product launches and costing them federal project bids<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A UK B2B manufacturer was spending around \u00a322,000 a year to get about seven product footprints, delivered via manual spreadsheet packs<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">One manufacturer told us they ended up with three separate consultants covering three product lines, and described the reports coming back as black boxes<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">One chemicals company had to correct heat and mass balance errors in EPDs that a consultancy had produced and invoiced for<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">None of this makes consultancies a bad choice. But it can make them a poor fit for volume or data control. They excel at complexity and judgement-heavy work, and they struggle when what you need is repeatability across dozens or hundreds of products.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\"><strong>Approach 2:<\/strong> Expert LCA software with an in-house sustainability specialist \u2013 best for full methodological control in expert hands<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Expert LCA software gives a trained practitioner detailed control over how a life cycle assessment is built. Tools such as SimaPro, openLCA and Sphera let users make their own decisions about system boundaries, allocation methods, impact assessment methods and background databases. These tools can be too complex for sustainability professionals with no LCA expertise.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">How it works in practice<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">You licence the software and your LCA practitioner builds the product system from the ground up. Rather than filling in a template, they construct a network of unit processes \u2013 each material input, energy flow, transport leg and waste stream modelled separately and linked by flows.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Every input gets a background dataset chosen by hand. For one steel component that means deciding which ecoinvent dataset applies and which system model it comes from: cut-off, APOS or consequential.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The same applies downstream. They select the impact assessment method \u2013 ReCiPe 2016, EF 3.1, CML or IPCC GWP100 \u2013 and decide whether to normalize and weight. They set allocation process by process, choosing between mass, economic value, energy content or system expansion wherever something produces more than one output.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">They can also run Monte Carlo simulations across parameter distributions to check whether the gap between two design options is real or sits inside the noise.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Finally, interpretation under ISO 14044: contribution analysis, completeness and consistency checks, and the documentation a critical reviewer will ask for.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Best for<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Teams that need maximum methodological control and have an experienced LCA practitioner to build and manage the calculations in-house. It suits research-grade work, unusual methodologies and high volumes of genuinely complex assessments, and it fits organizations that want to retain the models, expertise and decision-making capability internally. That means having an LCA specialist in place already, or a clear business case for hiring or training one.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Where it falls short<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The software is designed for LCA practitioners, not for a sustainability professional or product manager who also owns supplier questionnaires, customer requests, the annual report, as well as CSRD and other regulatory reporting. Buying a powerful tool without the expertise and time to use it properly can leave you with a costly system only a small part of the organization can operate.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The decision is therefore about capability as much as procurement. Questions worth answering before you buy:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Can you justify a dedicated LCA specialist?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Is there enough recurring work to keep that person productive?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Who will maintain the models and datasets?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">What happens to the capability if that person leaves?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Can product, procurement and operations teams supply the data required?<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Without the expertise already in place, the investment covers both the software and the people needed to operate it.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">If you&#8217;re weighing specific tools, the <\/span><a href=\"https:\/\/ecochain.com\/blog\/lca-software-buyers-guide\/\"><span style=\"font-weight: 400;\">LCA software buyer&#8217;s guide<\/span><\/a><span style=\"font-weight: 400;\"> walks through what to look for in your next Life Cycle Assessment software, when each thing matters, 8 red flags to watch for and 12 questions that tend to expose how a tool really behaves once you\u2019re past the demo.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span style=\"font-weight: 400;\"><strong>Approach 3:<\/strong> LCA automation software with expert service embedded \u2013 best for recurring product footprint outputs across a portfolio<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">LCA automation software is built for the person who owns sustainability day to day rather than for a trained LCA practitioner. It standardizes and automates parts of the modelling, calculation and reporting process, so the work becomes more about organizing data and interpreting results than constructing every model from scratch. When LCA software is paired with expert service, as in Ecochain&#8217;s case, environmental specialists help set up the data foundation, support methodology decisions, train the team and stay available when more complex questions arise.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">How it works in practice<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Let\u2019s take Ecochain as an example.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">You start with the software. The first real work is data collection, pulling bills of materials, supplier data, energy use and process information out of your ERP, your production floor and your suppliers&#8217; inboxes. This is the slow part of any LCA, and no tool removes it.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">From that data you build the foundation. Materials get mapped to background datasets, processes get defined, facility-level energy and waste get allocated to products, and you settle on the methodology available in the software and system boundaries you&#8217;ll apply across the portfolio. Once that exists, the software uses the LCA engine to do the calculations and the model is yours to edit.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">You can do this yourself or with Ecochain&#8217;s LCA specialists. Manufacturing companies with in-house LCA professionals sometimes prefer to model themselves and bring in our experts only for specific questions. Sustainability and product teams doing LCAs for the first time, or for example working under a tender deadline, tend to have our experts do the modelling and methodology choices with them, then take over once the structure is in place. Both routes end in the same place, with a model your team owns.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Once the foundation exists, the second product is far quicker than the first, and so are the tenth and the hundredth. A new product variant usually means changing inputs on a model that already exists. A new output, whether that&#8217;s a PCF, an EPD or a hotspot analysis for R&amp;D, runs on the same underlying structure and the same documented methodology, so results stay comparable across your portfolio and facilities. The bigger the portfolio, the more that setup work pays back.<\/span><\/p>\n<p><b>One important note:<\/b><span style=\"font-weight: 400;\"> Depending on what an output is used for, it may still need internal review or third-party verification. LCA automation software with expert support makes that path more predictable with verifiable results you could submit with program operators like MRPI, IBU, NMD and more.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Best for<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Sustainability and product teams without LCA expertise that want scalable, cost-effective product footprinting in-house without outsourcing every update to a consultancy. It suits manufacturers with recurring footprint requests across a portfolio who want the results and the data model to stay in-house but do not have a dedicated LCA specialist on payroll. Construction product manufacturers facing recurring EPD, tender or customer requests, and industrial manufacturers answering repeated product carbon footprint requests, both tend to land here.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">LCA automation software with expert service works when you are prepared to assign internal ownership for data collection and review, and it becomes more valuable as the number of products, variants and recurring requests increases.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Where it falls short<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Somebody on your side has to own the data. If nobody has time to pull production figures, check bills of materials or chase suppliers, setup stalls regardless of how much expert support sits behind the LCA software.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">It also asks more of you than fully outsourced LCA consultancy. You are building internal capability rather than buying a finished document, which means your team needs time for setup, training, data collection, review and ongoing maintenance before the efficiency benefits appear.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The approach is not suitable for everyone:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If you need one EPD once and have no follow-on work, the setup may be more infrastructure than the problem requires<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If you already employ an LCA specialist who is productive in expert software like SimaPro, you may not need an automation-led LCA approach<\/span><\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><a href=\"https:\/\/ecochain.com\/product\/\"><span style=\"font-weight: 400;\">Ecochain<\/span><\/a><span style=\"font-weight: 400;\"> is one example of this approach. The software handles the modelling, calculation and reporting mechanics, and our LCA specialists set up your data foundation with you, train your team, and stay available for any and all questions that come up along the way. We work mainly with industrial manufacturers in Benelux and DACH, and publish through EPD Global, NMD, MRPI, EPD International and IBU.<\/span><\/p>\n<p><a href=\"https:\/\/ecochain.com\/demo\/\"><span style=\"font-weight: 400;\">Book a demo<\/span><\/a><span style=\"font-weight: 400;\"> to walk together through your portfolio and explore if LCA software with expert services is the right approach for your business. If one of the other five approaches fits you better, we will say so.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span style=\"font-weight: 400;\"><strong>Approach 4:<\/strong> AI-first LCA software \u2013 best for screening a large portfolio quickly<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">AI-first LCA software uses machine learning or other automated estimation techniques to fill gaps in inventory data. You provide a bill of materials, product specification or product description, and the tool estimates missing inputs by matching them with similar products, materials or processes in its reference data. The result is a modelled estimate, not a measurement of your exact production process, and the quality of the output depends on the data, assumptions and reference datasets the tool uses.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">How it works in practice<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">You upload product data, usually a BOM, specification or list of materials. The tool maps the inputs to its own reference datasets, infers missing information and produces impact figures for the categories it supports.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">You can then compare products, identify likely hotspots and rank your portfolio. A sustainability team with 400 SKUs could use the results to find the products most likely to benefit from improved material data, supplier engagement or eco-design work.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The output should be treated as a screening result or working hypothesis. It can help answer &#8220;where should we focus first?&#8221; but does not automatically answer &#8220;what is the verified footprint of this product?&#8221;<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Best for<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Teams that don&#8217;t want verified declarations or accurate public claims, but instead want rapid early-stage estimates and hotspot insights across many products before investing in detailed LCA work. It suits portfolio screening, early eco-design comparisons and deciding where to spend a limited assessment budget, and it can help product teams compare design directions before all supplier and process data is available.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Where it falls short<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Validation and traceability are the main challenges with using AI-first LCA software. Environmental impact results rarely have one simple ground-truth value, so the quality of an AI-generated estimate depends on the quality of the source data, the similarity of the reference products and the assumptions made when information is missing.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">That may be acceptable when ranking your own products against one another. It becomes more difficult when a verifier, customer or regulator asks you to explain exactly where a specific number came from.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Before adopting an AI-first LCA tool, ask:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Which data sources and databases does it use?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Which inputs are measured, supplied or estimated?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Can you see and edit the assumptions?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Are the calculations reproducible?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Can the results be exported into a transparent, reviewable model?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Is the tool intended for screening, or can it support a formal verified study?<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">AI-first LCA software vendors will argue that statistical inference beats the rough assumptions a person would otherwise make, and they have a fair point. The question to put to them is what happens when the number needs to be defended.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\"><strong>Approach 5:<\/strong> Using generic or sector-average product footprint data \u2013 best for answering a request you have no budget for<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Using generic or sector-average data means reporting environmental figures calculated for a product category resembling yours, rather than assessing your own product. The data may come from a trade association&#8217;s sector EPD, a public database, a supplier&#8217;s published declaration, or default values built into a national calculation method. You are still doing a calculation, but you are not modelling your specific product system or your actual production process.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">How it works in practice<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">A request arrives on Tuesday for environmental data on a product never assessed before, and it closes on Friday. So you look for numbers that already exist:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A sector EPD published by your trade association<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A generic figure from a public database for the nearest product category<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A supplier&#8217;s published EPD for an input material or component, where using it as a proxy is methodologically appropriate<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A published EPD for a comparable product, where the applicable rules permit the comparison or proxy<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A rough spreadsheet built from public emission factors when nothing else fits<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">You then provide the figure with a clear explanation, such as: <\/span><i><span style=\"font-weight: 400;\">&#8220;Based on generic industry data for [category]. Product-specific data is not yet available and is under development.&#8221;<\/span><\/i><\/p>\n<p><span style=\"font-weight: 400;\">This may take only half a day and can help you respond quickly. The important thing is to distinguish clearly between generic data, proxy data and product-specific verified data. They are not interchangeable, and a customer, verifier or programme operator may treat them differently.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Best fit<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Teams that need a quick directional estimate before product-specific data or sustainability budget is available. It fits a short deadline, an initial tender response, early screening, or a figure supporting an internal decision rather than a formal external claim \u2013 provided it is clearly labelled as generic.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">It is also a practical way to decide whether a product deserves a deeper assessment.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Where it falls short<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Generic and sector-average data can make a product look worse or simply less differentiated than it actually is. Improvements such as lower-carbon energy, increased recycled content, material reduction or reformulation may not be reflected in an industry-average figure. To a specifier comparing products, yours can look no better than the market average even when its actual impact is lower.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This has practical consequences in construction markets where generic data receives a conservative adjustment, or where product-specific declarations are preferred:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>The Netherlands:<\/b><span style=\"font-weight: 400;\"> The <\/span><a href=\"https:\/\/ecochain.com\/blog\/nmd-mrpi-epd-faq-netherlands\/\"><span style=\"font-weight: 400;\">Dutch National Environmental Database (NMD)<\/span><\/a><span style=\"font-weight: 400;\"> distinguishes between product-specific verified data (Category 1), industry- or sector-specific verified data (Category 2), and generic Category 3 data. <\/span><a href=\"https:\/\/milieudatabase.nl\/en\/environmental-data-lca\/category-3-data\/\"><span style=\"font-weight: 400;\">Category 3 data carries a 30% markup factor<\/span><\/a><span style=\"font-weight: 400;\"> so if a specifier uses Category 3 data in an MPG calculation, the generic dataset can therefore make the product\u2019s environmental performance appear worse than the underlying estimate.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>France:<\/b><span style=\"font-weight: 400;\"> Under RE2020, when no FDES exists for a product, the calculation falls back to <\/span><a href=\"https:\/\/www.inies.fr\/en\/faq\/what-is-default-environmental-data-ded\/\"><span style=\"font-weight: 400;\">Donn\u00e9es Environnementales par D\u00e9faut<\/span><\/a><span style=\"font-weight: 400;\">. These are deliberately overestimated, carrying roughly a 30% increase on the indicators, and the stated purpose is to push manufacturers to publish real FDES.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Germany:<\/b><span style=\"font-weight: 400;\"> Generic <\/span><a href=\"https:\/\/www.oekobaudat.de\/en.html\"><span style=\"font-weight: 400;\">\u00d6kobaudat<\/span><\/a><span style=\"font-weight: 400;\"> datasets used in QNG assessments carry a safety surcharge applied under worst-case assumptions. The sharper issue is that QNG currently offers no route to reflect the environmental advantages of choosing a specific product at all.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Beyond the arithmetic, a tender, customer or building assessment may specifically request a manufacturer-specific verified EPD or another approved form of product data. Generic data may score less favourably, may not show your product&#8217;s actual improvements, or may not meet the evidence requirements for the intended use. Under the <\/span><a href=\"https:\/\/ecochain.com\/blog\/cpr-regulation-why-manufacturers-cant-afford-to-ignore-it\/\"><span style=\"font-weight: 400;\">revised CPR<\/span><\/a><span style=\"font-weight: 400;\">, environmental declarations feed into your Declaration of Performance and Conformity, and a branch average may not be accepted as equivalent evidence.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Most manufacturers start here, and there is nothing wrong with that. Generic data has a legitimate role as an interim step. The risk is treating it as the destination for all future requests.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\"><strong>Approach 6:<\/strong> DIY using spreadsheets \u2013 best for when you have the expertise, the time and no budget<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Building your product footprint in Excel or Google Sheets means constructing the calculation by hand. Product inputs and quantities go in one sheet, emission or characterization factors in another, and formulas connect them. You source the factors yourself, set the system boundary, handle allocation manually and interpret the results. Nothing is automated, and nothing is checked for you.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">How it works in practice<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">You start with the bill of materials. Each material receives a mass, and each mass is multiplied by an appropriate emission or characterization factor. You then add energy use per unit produced, transport distances and modes, packaging, manufacturing losses and waste treatment.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The results are summed by the life cycle stage to produce, for example, a cradle-to-gate product carbon footprint.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Factors may come from a licensed database, public datasets or industry-specific sources. You need to record the source, version, geography, year and unit for every factor. Keeping them current is a manual task each time a database or methodology changes.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Some industry associations publish sector calculators using this type of structure. These can be useful starting points if the scope, factors and calculation rules suit your product category.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Best for<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Teams where someone already knows LCA methodology, there is no budget, and there is enough time to do the work properly. It suits internal screening, early hotspot analysis and a first-pass PCF on a straightforward product. It is most appropriate when the number of products, users and impact categories is small, and it is also a genuinely good way to learn how the calculation behaves before you decide what to buy, because nothing is hidden from you.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Where it falls short<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Auditability is the main constraint. To use the data externally or have it verified by a third party, you need to show how you reached the number: the factor version, data sources, allocation choices, system boundary, assumptions and any exclusions.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A spreadsheet can hold all of that, and keeping it complete and consistent over time is difficult. Spreadsheet work tends to struggle at verification for two reasons: the calculation cannot be independently reproduced, and the supporting evidence is incomplete or hard to trace.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Also, multiple impact categories become difficult quickly. A carbon footprint may require one set of emission factors. An environmental declaration under a standard such as EN 15804+A2 requires consistent characterization across multiple mandatory indicators, life cycle modules and data-quality requirements.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">There is also a clear people risk. The file may make perfect sense to the person who built it and not to whoever inherits it. When the owner goes on holiday or leaves, the practical answer is often to rebuild the calculation.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Scaling creates another problem. Product two means copying and editing the first file. By product twenty you may have multiple versions with different factors, formulas and assumptions that have gradually drifted apart.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In general, using spreadsheets for product footprinting is useful for learning, screening and simple internal calculations. They are a weak foundation for a portfolio-wide footprinting process unless you invest heavily in documentation, version control, review procedures and data governance. Where they stop being the right tool is anything going to a verifier, a programme operator or a tender committee.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">12 questions to ask before you commit to a product footprinting approach<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">The best approach for calculating your product footprints isn&#8217;t always the most advanced one. It&#8217;s the one that gives you a result fit for its purpose, repeats easily enough for your workload and stays manageable for the people who&#8217;ll own it.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Before you commit, go through these questions for the approach you&#8217;re considering.<\/span><\/p>\n<p><b>Scope and repetition<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">How often will you need to repeat the calculation? Once for a tender, or every quarter as production shifts?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">What happens when a product changes? A supplier switch, a recipe change or a new energy contract shouldn&#8217;t mean starting over.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">How many products will you need to cover in two years, and does the approach scale to that number?<\/span><\/li>\n<\/ul>\n<p><b>Reuse and outputs<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do you need the model to feed multiple outputs, like an EPD, a PCF, a customer questionnaire and an R&amp;D comparison?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Will results stay comparable across products, or does each calculation stand alone?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do outputs need third-party verification, and does the approach support that path?<\/span><\/li>\n<\/ul>\n<p><b>Data and traceability<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Will you need to explain where the numbers came from, to a verifier, a customer or an auditor?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Can you see the assumptions, background datasets and system boundaries behind a result, or only the result itself?<\/span><\/li>\n<\/ul>\n<p><b>Ownership and continuity<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do you have someone in house who&#8217;ll own the data and keep it current, and how much of their time does that take?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do you want something that stays inside your company, or are you comfortable outsourcing it completely?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">What happens when the person managing the model leaves? If the answer is &#8220;we&#8217;d have to rebuild it,&#8221; that&#8217;s worth knowing now.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If you switch providers in three years, what do you keep?<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Most of these questions only get answered honestly after the first calculation is done, which is exactly when the answers are expensive to change. Working through them upfront costs an afternoon.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">There&#8217;s no single right answer here. A manufacturer with eight products and one tender a year has a different situation to one with a 400-SKU catalogue and customers asking for footprint data every month. The approach that fits the first would slow the second down, and the reverse is just as true.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">What&#8217;s worth being deliberate about is the part that&#8217;s hardest to reverse. Whoever ends up holding your model, your data and your methodology decisions is who you&#8217;ll depend on every time something changes.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Frequently asked questions about life cycle assessment approaches<\/span><\/h2>\n<h3><span style=\"font-weight: 400;\">What business approaches can I explore to calculate the product footprint for my manufacturing business?<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Manufacturers can choose from six main approaches when deciding how to calculate the environmental impact of their products: a) using generic or sector-average data for quick directional estimates; b) outsourcing a complex or one-off study to an LCA consultancy; c) using AI-first LCA software for rapid portfolio screening; d) using expert LCA software with an in-house LCA specialist for maximum methodological control; e) using LCA automation software with expert support, such as Ecochain, for recurring product footprinting across a portfolio; or f) building simple internal calculations in spreadsheets when the scope, expertise and budget are limited. The right approach depends on the required level of accuracy and verification, the number of products and updates involved, the complexity of the products, and who will own the data and calculations over time.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">What is the cheapest way to calculate a product&#8217;s carbon footprint?<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The cheapest approach to calculating your product\u2019s footprint is usually to use generic or sector-average data, or to build a simple calculation in a spreadsheet using public emission factors. These options can work for early internal screening when you have limited budget, time and product-specific data, but they provide less accuracy, scalability and auditability. AI-first LCA software may offer a relatively low-cost way to screen many products but you have to be careful about the accuracy of these results, while a consultancy, expert LCA software or LCA automation software with expert support is more appropriate when the footprint must be product-specific, repeatable, externally reviewed or used for an EPD, tender or customer claim. The cheapest option is therefore not always the most cost-effective one for recurring or externally scrutinized footprinting.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">How much does it cost to work with an LCA consultancy?<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">How much it costs to work with an LCA consultancy varies widely by product complexity and market. For reference points from manufacturers we&#8217;ve spoken to: one US company reported roughly $11,000 per EPD with a 12 to 18 month turnaround, and a UK manufacturer was spending around \u00a322,000 a year for about seven product footprints. The more useful point is how cost behaves rather than where it starts. Because the model stays with the consultancy, cost scales roughly in line with the number of products assessed.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Can I do a life cycle assessment in Excel?<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">You can build a rough product carbon footprint in Excel or Google Sheets for a simple product, and many manufacturers use spreadsheets for internal screening. A full LCA across multiple impact categories \u2013 such as one prepared under EN 15804+A2 \u2013 is more demanding, not because Excel cannot perform the calculations, but because you must manage the datasets, system boundaries, allocation choices, assumptions and documentation yourself. For an externally reviewed or verified result, a verifier needs to trace how each figure was calculated and which factor versions and assumptions were used. That evidence can become difficult to maintain in a spreadsheet built up over time, particularly when one person owns the file.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Is AI-generated LCA data accepted by verifiers?<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">AI-generated LCA data is generally not accepted as the basis for a verified EPD. The obstacle is validation rather than speed. Most environmental impact measures lack a single accepted ground-truth value, so the accuracy of a machine-learning estimate gets inferred from proxy metrics or expert judgment rather than tested directly. That works for internal screening and for comparing your own products against each other. It&#8217;s hard to defend when a verifier asks where a specific figure came from.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Do I need to hire an LCA expert to use LCA software?<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Whether you need to hire an LCA expert or not, depends on the software. SimaPro, openLCA and Sphera expose full methodological control and realistically need a practitioner. LCA automation software like Ecochain built for sustainability professionals at manufacturing companies doesn&#8217;t, though someone internal still has to own data collection. No tool solves the problem of getting production and supplier data out of your own organization.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Can I switch LCA approaches later from a consultancy to LCA software?<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Most manufacturers switch LCA approaches at some point, usually moving from generic data or a consultancy toward LCA software like Ecochain with a reusable foundation once request volume climbs. Switching is easier when your underlying data is already structured and documented. If what you have is a consultancy report plus an undocumented spreadsheet, you&#8217;re largely starting again. Asking a consultancy up front whether you&#8217;ll receive the model as well as the report makes a later move considerably easier.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Summary (TL;DR) of what this blog covers Manufacturers often calculate product footprints in one of six ways: using generic or sector-average data, outsourcing to an LCA consultancy, buying AI-first software, investing in expert LCA software that needs an in-house specialist on payroll, buying LCA automation software combined with expert service, or taking a DIY approach [&hellip;]<\/p>\n","protected":false},"author":126,"featured_media":22788,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[119,122],"tags":[],"industries":[],"use-cases":[],"departments":[],"class_list":["post-22787","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-getting-started-with-product-footprinting","category-product-footprint"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.8 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>6 Ways To Calculate Product Footprints, From Consultancy To LCA Software<\/title>\n<meta name=\"description\" content=\"LCA consultancy, AI LCA software, DIY or LCA software + expert service. 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