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West Japan Railway Company

westjr.co.jp 7.5
Mycelium Score 7.5 / 10 A strong score A Transparency Very High Extensive disclosure across almost all key areas

Explore carbon emissions data for West Japan Railway Company. Mycelium helps you review reported emissions, disclosure status, Scope 1, Scope 2 and Scope 3 data, climate targets and sustainability information in one company profile.

This profile brings together available carbon emissions data for West Japan Railway Company, including reported figures, modelled estimates, disclosure documents and sustainability indicators, so you can review its emissions and compare its performance against similar companies. It is one entry in the Mycelium emissions database. Read how we source and check this data.

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Emissions

Carbon emissions

Structured data JSON-LD, OpenCCF Spreadsheet CSV
Open Corporate Carbon Footprint Data Model (OpenCCF) Schema and docs on GitHub By the Carbon Accounting Alliance with Murmurate Digital, Mycelium and Roundarc.

Total yearly emissions across all scopes

5,300,151 tCO2e (Market Based)

Scope 1

tCO2e

140,805

Scope 2 (Market Based)

tCO2e

1,641,495

Scope 3 total

tCO2e

3,517,851

Checked against page 59 of the source report on 4 Oct 2026

Scope 3 reported

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15

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See the scope breakdown

Provenance

Review the sources and documents behind West Japan Railway Company's emissions data. Provenance matters because it shows where the information comes from, how recent it is and how complete the disclosure appears to be.

Documents

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Emissions
Factors

Modelled emission factor Total, all scopes including all Scope 3
0.625 kgCO2e / £

Supplier specific emission factors (kgCO2e / £)

Modelled
Reported
Scope 1 + 2 Direct + purchased energy
0.210
0.210
Upstream + upstream Scope 3
0.605
0.605
Total + all Scope 3
0.625
0.625

Scope 2 in these factors uses the company's market based figure.

Which figure should I use?

Comparing companies? Use Total Modelled. It is the most complete like-for-like view: any categories the company has not disclosed are filled with industry-typical estimates, so a transparent company is not unfairly penalised against one that simply has not reported.

Estimating your own supply-chain emissions from spend with this company? Use Upstream Modelled. The GHG Protocol defines purchased-goods emissions as cradle-to-gate, which means this company's own operations plus its upstream supply chain. The Total figure also includes downstream emissions, such as the lifetime use of the products this company sells, which the GHG Protocol attributes to the users of those products rather than to customers buying goods and services.

Reported counts only emissions the company has filed itself. A blank or low Reported cell does not mean those emissions do not exist, just that the company has not disclosed them. When Reported sits close to Modelled, that is a positive signal: the company has disclosed most of its salient emissions.

Sustainability
Snapshot

Based on reported data, retrieved with AI

  • West Japan Railway Company reported 5,300,151 tCO₂e in 2024.
  • Scope 3 accounted for 66% of emissions.
  • Reported across 9 of 15 GHG Protocol Scope 3 categories.
  • Scope 2 reported under the market based methodology.

According to available emissions disclosures, West Japan Railway Company reported total yearly emissions of 5,300,151 tCO₂e in 2024. Scope 3 emissions accounted for 66% of the footprint, indicating supply chain activity, purchased goods and services, business travel, and wider operational dependencies were the most significant contributors to the company's carbon footprint.

The company achieved a Mycelium Score of 7.5, placing it strongly within its sector for sustainability performance, and received a transparency score of 100.0, an exceptional result, reflecting open disclosure across nearly every key emissions metric.

Scope
breakdown

Scope 1 emissions

Direct emissions from sources the company owns or controls, such as fuel use, facilities and vehicles.

REPORTED

Direct emissions

140,805

tCO2e

Scope 2 emissions

Indirect emissions from purchased energy, including electricity, heating and cooling.

Location based

–

tCO2e
REPORTED

Market based

1,641,495

tCO2e

Scope 3 emissions

Wider value chain emissions across the 15 GHG Protocol categories, from purchased goods and business travel to investments, where reported.

REPORTED

Cat 1

Purchased goods & services

1,975,177

tCO2e
REPORTED

Cat 2

Capital goods

1,038,425

tCO2e
REPORTED

Cat 3

Fuel & energy related activities

271,816

tCO2e
ESTIMATED

Cat 4

Upstream transportation & distribution

1

tCO2e
REPORTED

Cat 5

Waste generated in operations

42,814

tCO2e
REPORTED

Cat 6

Business travel

5,786

tCO2e
REPORTED

Cat 7

Employee commuting

10,668

tCO2e
ESTIMATED

Cat 8

Upstream leased assets

0

tCO2e
ESTIMATED

Cat 9

Downstream transportation & distribution

0

tCO2e
ESTIMATED

Cat 10

Processing of sold products

0

tCO2e
REPORTED

Cat 11

Use of sold products

15,865

tCO2e
REPORTED

Cat 12

End-of-life treatment of sold products

853

tCO2e
REPORTED

Cat 13

Downstream leased assets

156,446

tCO2e
ESTIMATED

Cat 14

Franchises

0

tCO2e
ESTIMATED

Cat 15

Investments

0

tCO2e

6 values were derived via Mycelium's normalisation process rather than reported by the company. A cell marked “ESTIMATED” is a figure the company did not disclose, modelled by Mycelium. Cells marked “–” were not disclosed and could not be modelled.

Structured data JSON-LD, OpenCCF Spreadsheet CSV
Open Corporate Carbon Footprint Data Model (OpenCCF) Schema and docs on GitHub By the Carbon Accounting Alliance with Murmurate Digital, Mycelium and Roundarc.

Verification

Independent third parties involved in checking or preparing West Japan Railway Company's emissions data.

Independent assurance

Independently assured (limited assurance) by Ernst & Young ShinNihon LLC for 2024

Contact Info

Address

–

Country

JPN

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How scoring works

How the Mycelium Score is calculated

The Mycelium Score is out of 10. Up to 6.5 points reflect carbon intensity vs sector peers (emissions normalised against revenue), scaled by how transparent the reporting is. The band above 6.5 is earned through verified data quality on a claimed profile: declaring every reporting category yourself (up to 2.0), preparation by a carbon accountant (2.0) and independently audited figures (2.0), capped at 10.

A higher score means lower carbon intensity than sector peers, backed by data that's third-party verified, claimed by the company, and fully disclosed. West Japan Railway Company's score sits at the top of this page and in the score panel.

How the Transparency Score is calculated

The Transparency Score is the share of a company's estimated footprint that it reported itself, graded from A (very high) down to F (very low). Where a category is missing, Mycelium models what it would hold for a company of that size and industry and counts it as undisclosed, so an unreported category where the bulk of emissions sit hurts far more than a minor one. A Scope 3 total filed without a category breakdown earns very little credit for the part left unattributed, because it does not show which categories are inside it: a company can count business travel, leave purchased goods out entirely, and the total looks the same. Companies with nothing to model are graded on how much of their industry's typical footprint the reported categories cover.

West Japan Railway Company has disclosed the emissions categories that are material for its industry, so there's no single bucket dragging the transparency score down. The breakdown above shows full coverage across the categories that matter most for this kind of company.

Cover of Mycelium's scoring methodology white paper Read the full scoring methodology Our white paper covers exactly how the Mycelium Score and Transparency Score are calculated, including the normalisation process and what earns a 10/10. Download the white paper (PDF)

West Japan Railway Company carbon emissions FAQs

What are West Japan Railway Company's carbon emissions?

In its 2024 reporting year, West Japan Railway Company disclosed total emissions of 5,300,151 tCO2e across all scopes. Scope 3 accounted for the largest share, around 66% of the total.

Does West Japan Railway Company report Scope 1, Scope 2 and Scope 3 emissions?

For 2024, West Japan Railway Company's available disclosure covers Scope 1 (140,805 tCO2e), Scope 2 (1,641,495 tCO2e), Scope 3 across 9 of the 15 GHG Protocol categories. Figures not reported by the company are shown as modelled estimates and labelled as such.

How transparent is West Japan Railway Company's emissions reporting?

West Japan Railway Company has a Mycelium transparency score of 100 out of 100. The score is the share of the company's estimated footprint that it reported itself, so an undisclosed category where most of its emissions sit weighs far more than a minor one.

Is West Japan Railway Company sustainable?

Mycelium measures sustainability through carbon emissions data rather than giving a yes or no verdict. West Japan Railway Company has a Mycelium Score of 7.5 out of 10, which reflects its emissions intensity against sector peers together with how transparent and well-verified its reporting is. The emissions figures, disclosure documents and climate targets on this page give the fuller picture.

Is West Japan Railway Company environmentally friendly?

Carbon emissions are one measurable part of environmental impact, and the part Mycelium tracks. West Japan Railway Company disclosed 5,300,151 tCO2e for 2024, and its Mycelium Score of 7.5 out of 10 shows how that performance compares with similar companies in its sector.

Learn more about our methodology and where this data comes from.