# Your Japanese buyer asked for carbon data. Here is who is asking, and why.

Canonical: https://senseible.earth/export/japan-buyers

The request starts at a listed Japanese company and travels down to you. What you send travels back up. Tap each step to see what it needs.

## Japanese carmaker

Large listed Japanese companies are being phased in to report what they buy, and your parts are in it.

### What it needs

- Scope 3 for its annual report. That is the emissions of everything it buys, parts included.
- Supplier figures it can defend, not only spend-based estimates.

### Why now

- The Sustainability Standards Board of Japan (SSBJ) issued its first standards on 5 March 2025. They are built to match the International Financial Reporting Standards (IFRS) climate standard, IFRS S2.
- In February 2026 Japan made them mandatory in annual securities reports, in phases.
- The rule applies to the listed Japanese company, not to you. Your buyer asks because it needs your figures.
- Companies on Japan's top listed market (Prime Market) with a market value of 3 trillion yen or more go first, for fiscal years ending March 2027. Smaller ones follow in later years.
- Estimates are allowed, so early requests may be light. The standard asks companies to use direct value chain data where reasonably available, and say how much rests on estimates.
- Spend-based estimates do not move when a supplier actually cuts emissions. Carmakers with supplier reduction targets need supplier-specific figures.

### What reaches it from you

- Your own figures, traceable to your own records. Your buyer normally asks for figures, not your invoices, and passes the answer up.

## Your direct buyer (the company that buys from you)

Asks about your company, or about one product. Not the same question.

### Two kinds of request

- Company request, driven by your buyer's Sustainability Standards Board of Japan (SSBJ) reporting: your Scope 1, 2 and 3 (fuel you burn, electricity you buy, and what you buy in).
- Product request, from Japan's Carbon Footprint Guidelines: one product, calculated the way government guidance describes.

### The product kind, in short

- Issued in March 2023 by the Ministry of Economy, Trade and Industry (METI) and the Ministry of the Environment. Guidance, not law.
- Your own fuel, electricity and material use per unit, not an industry average.
- Usually cradle to gate: it ends when the part leaves your factory.
- A declared unit, such as per kg or per piece, that matches what they buy.
- The method disclosed: standards followed, allocation rules, factor sources, data period.

A company total divided by revenue is not a product footprint. Answer the question you were asked.

### What you ask them first

- Their template. A Japanese buyer's own supplier guideline usually sets the format, so follow it.
- Which edition of the guidelines they follow, because the guidance is updated.
- The product, the unit and the reporting year.
- Whether they expect third-party verification. Agree this before you start.

## You, the Indian supplier

What you send back, and the bills behind it.

### What Japanese buyers of auto parts usually ask

- Scope 1 (fuel you burn) and Scope 2 (electricity you buy) for the year, with the factors used.
- Emissions per part, shared out from plant totals.
- Your renewable power share.
- A target and the actions behind it.

### What you send back up

- Annual totals with the method and factors.
- An allocation by machine hours or weight. Use the same method every year so trends mean something.
- Later, a product footprint for key parts, including the materials you buy.

### Records to gather

- Electricity bills, solar generation and open access invoices.
- Diesel for gensets and forklifts.
- Liquefied petroleum gas (LPG) or gas for heat treatment and paint shops.
- Production by part number.

Report location-based Scope 2 with the Central Electricity Authority (CEA) factor. Keep a full year and production volumes by product line, so the allocation is quick when the questionnaire lands.

### Where Senseible helps

- It reads your fuel slips, electricity bills and freight invoices into a dated record per site, with the source document behind each line.
- It does not allocate emissions to parts automatically.
- Its product footprint report is a self-declared draft. It is not International Organization for Standardization (ISO) 14067 verification.
- Figures can be built in the Partnership for Carbon Transparency (PACT) exchange format as a custom integration, on request.

## Start with the bills, then one part number.

Your buyer may ask for company totals or for one product. Both start from your own records. See how a product footprint is built from them.

[See how a product footprint is built](https://senseible.earth/product-carbon-footprint)