A life cycle assessment answers a question that sounds simple and isn’t: what is the total environmental impact of this product, across everything it takes to make, move, use and dispose of it?
Ten years ago in India, LCA was mostly an academic exercise. Now it’s a commercial requirement. Manufacturers are being asked for product carbon footprints by European and Japanese customers, need Environmental Product Declarations to bid on projects, or are staring down CBAM.
Here’s what the work actually involves.
What LCA measures, and what it doesn’t
An LCA quantifies environmental impacts across a defined portion of a product’s life. Not just carbon. A proper LCA covers global warming potential, acidification, eutrophication, ozone depletion, water use, resource depletion and often several more.
Most people who ask for an LCA actually want the carbon number. That’s fine, and a carbon footprint is a legitimate single issue LCA. But if you’re going to build the inventory anyway, running the full impact set costs very little extra and sometimes changes the answer. A product can look good on carbon and bad on water. For a plant in a water stressed region, that second number can matter more than the first.
An LCA doesn’t tell you whether a product is “sustainable”. It tells you where the impacts sit. What you do with that is a business decision.
The four stages under ISO 14040 and 14044
Every credible LCA follows the same four phase structure. If somebody offers you an LCA that skips one, walk away.
Stage 1: Goal and scope definition. Why are you doing this, who’s the audience, and what exactly are you measuring? This is where you fix the functional unit and the system boundary. It sounds like paperwork. It’s the single most consequential stage, and the one clients want to rush.
Stage 2: Life cycle inventory analysis, or LCI. Collecting every input and output across the boundary. Raw material quantities, energy consumption, water, transport distances, emissions, waste streams. This is usually the bulk of the effort on a project. It’s also where the study lives or dies, because modelling can’t rescue bad data.
Stage 3: Life cycle impact assessment, or LCIA. Converting inventory data into impact categories using characterisation factors. Kilograms of methane become kilograms of CO2 equivalent. Kilograms of sulphur dioxide become acidification potential. This part is largely computational, done in software.
Stage 4: Interpretation. Working out what the results mean, running sensitivity and uncertainty analysis, checking completeness and consistency, and drawing conclusions you can actually defend. If the study is going to be publicly disclosed or used in comparative claims, ISO 14044 requires a critical review by independent experts.
System boundaries, and why the terminology matters
The boundary decides what gets counted. Get it wrong and your number isn’t comparable to anything.
Cradle-to-gate covers raw material extraction through to your factory gate. This is the most commonly requested boundary in India because it’s what customers, EPDs and CBAM all need. We wrote a full explainer on cradle-to-gate in life cycle assessment.
Gate-to-gate covers only your own processing steps. Narrower, useful for internal process improvement and for slotting your data into a customer’s larger study. Our gate-to-gate LCA case study walks through how that plays out in practice.
Cradle-to-grave adds distribution, use phase and end of life. Necessary for any product where the use phase dominates. If you make motors, pumps, appliances or vehicles, a cradle-to-gate study is telling you about the small end of your impact.
Cradle-to-cradle treats end of life as feedstock for the next cycle rather than as disposal. Relevant for truly circular systems, which are rarer than the marketing suggests.
The functional unit, which is where studies go wrong
The functional unit is the quantified performance you’re measuring against. Not “one ceiling fan”. Something closer to “delivering a specified airflow for a specified number of operating hours”.
Get this wrong and comparisons become meaningless. Comparing one kilogram of two materials tells you nothing if one of them needs half the mass to do the same job. A material switch can look like a big cut in impact per kilogram and turn out to be close to zero once you compare them on the job they actually do.
Why Indian manufacturers are commissioning LCAs now
Customer requirements. A multinational buyer asks its supply base for product carbon footprints. This is one of the most common triggers, and it usually comes with a deadline that doesn’t account for how long data collection takes.
CBAM. The EU wants embedded emissions per tonne of covered goods. That calculation is an LCA in everything but name. Detail in our post on what Indian exporters need to do about CBAM, and on how CBAM connects to India’s own carbon market in carbon credit price in India.
Environmental Product Declarations. Increasingly required in construction tenders, particularly for green building certification. An EPD needs a verified LCA behind it, following a product category rule.
BRSR Principle 2. Product life cycle disclosures sit under sustainable goods and services. Not every filer needs a full LCA, but the questions push in that direction. See BRSR reporting explained for the full principle list.
Internal decisions. Which material, which supplier, which process route. Honestly this is the best reason to do one, and the least common motivation for starting.
An LCA looks at one product. If the ask is your whole company’s value chain footprint, that’s Scope 3 work instead, covered in Scope 3 emissions: the 15 categories.
Data sources, and the India problem
Commercial databases like ecoinvent, Sphera and others provide background data for materials and processes. Software like SimaPro, GaBi and OpenLCA does the modelling.
Here’s the catch. Most background datasets are built on European or global average conditions. India’s grid emission factor, transport profile, and process technology mix are all different. Using a European electricity dataset for an Indian factory will give you a number that’s defensible to nobody who looks closely.
For any material or process that drives a meaningful share of your result, you want primary data from your own operations plus India specific background data where it exists. Where it doesn’t, you document the proxy and run a sensitivity check. That documentation is what separates a study that survives review from one that doesn’t.
What an LCA project actually looks like
Rough shape, for a single product with cradle-to-gate boundary:
Scoping and functional unit definition takes a week or two, mostly in conversation. Data collection runs four to eight weeks and depends almost entirely on how quickly your plant and procurement teams can pull figures. Modelling and impact assessment takes two to three weeks. Interpretation and reporting adds another two. Critical review, if you need it, adds four to six on top.
So a straightforward single product study runs roughly two to three months. Multi product studies run longer but benefit from shared background modelling. We ran a multi category study covering pesticides, electrical cables, telecom cable, switchgear and ceiling fans for manufacturing clients, and the later products always move faster than the first.
The bottleneck is almost never the modelling. It’s getting the plant to give you twelve months of consistent consumption data at the right level of detail.
Questions we get asked
What is life cycle assessment in simple terms? A structured way of adding up the environmental impacts of a product across its life, from raw materials through manufacturing and use to disposal.
What are the four stages of a life cycle assessment? Goal and scope definition, inventory analysis, impact assessment, and interpretation. Set out in ISO 14040 and ISO 14044.
How long does an LCA take in India? Typically two to three months for a single product cradle-to-gate study. Data collection is the long pole, not the analysis.
What is the difference between LCA and carbon footprint? A carbon footprint is a single impact category. An LCA covers several, including water, acidification and resource use. Every product carbon footprint is a restricted LCA.
Do I need ISO certification to do an LCA? No. ISO 14040 and 14044 are standards for how the study is conducted, not certifications you hold. What you may need is third party critical review, particularly for public comparative claims or an EPD.
Can an LCA be used for CBAM reporting? The underlying inventory work overlaps heavily, but CBAM has its own prescribed methodology and boundaries. An existing cradle-to-gate LCA gives you a strong head start rather than a finished answer.
Bilancia Consulting is an Ahmedabad based sustainability and ESG advisory firm. We conduct life cycle assessments for Indian manufacturers across chemicals, electricals and industrial products, and support GHG accounting and sustainability reporting. If a customer has asked you for a product carbon footprint or an EPD, a short call will tell you what data you need to start pulling.
Call +91-9510144494 or email general@bilanciaconsulting.co.in