Shell Scope 3 Data Acquisition: What Suppliers Are Actually Asked For
Most guides to Shell's Scope 3 data acquisition get one thing badly wrong. If you sell Shell pumps, steel, catalysts, software or services, your emissions are not in Shell's reported Scope 3 Category 1 at all. Here is what Shell publishes, what it asks for, through which system, and why the request arrives anyway.
- The counter intuitive fact: Shell's Form 20 F basis of preparation says Category 1 covers well to tank emissions from purchased third party energy products, and that emissions from purchased non energy products are not included.
- Shell reports only 4 of the 15 GHG Protocol Scope 3 categories, 1, 3, 9 and 11, and states the others were assessed as insignificant.
- Shell's Category 1 was 122 million tonnes CO2e in 2025 against a total significant Scope 3 of 1,065 million tonnes. Category 11, use of sold products, is 836 million tonnes. The supply chain is a rounding error next to the product.
- Shell spent roughly 40 billion dollars on goods and services in 2025, across a supplier base reported at about 25,000 in 2023. Its own CDP disclosure describes collecting emissions data from around 3 percent of suppliers by number.
- The enhanced value chain due diligence policy Shell introduced in 2024, first fully operational in 2025, is scoped to human rights, not carbon.
- The commercial move is not compliance. Under spend based estimation your decarbonisation is invisible to your customer. Primary data is the only route by which your reductions show up in their inventory.
Four categories, and a Category 1 that is not your supply chain
Shell's Integrated Annual and Sustainability Report 2025 reports Scope 3 emissions of 1,065 million tonnes CO2e on an equity basis, of which Category 1, purchased goods and services, is 122 million tonnes, Category 3, fuel and energy related activities, is 103 million tonnes, Category 9, downstream transport and distribution, is 4 million tonnes, and Category 11, use of sold products, is 836 million tonnes.
Now read the basis of preparation. Shell's Form 20 F states that Category 1 includes well to tank emissions from purchased third party unfinished and finished energy products excluding electricity, that emissions from purchased non energy products are not included, and that emissions in the category are estimated using well to tank emission factors for crude oil, natural gas, refined oil products, LNG and biofuels.
That is not a supply chain roll up. It is a traded hydrocarbon volume calculation. If you sell Shell valves, pumps, steel, catalysts, drilling services, engineering, IT or consulting, your emissions are not in the number Shell publishes.
Shell reports only four of the fifteen GHG Protocol Scope 3 categories and states that the others were assessed as quantitatively and qualitatively insignificant. Shell also restated Category 1 for 2023 downward, from 154 to 130 million tonnes, a 16 percent revision, which tells you what kind of number it is. It is modelled, and Shell says so.
Project 54The supplier data gate is where carbon claims are won or lost.| Shell Scope 3 category | 2025, Mt CO2e | 2024 | What it actually contains |
|---|---|---|---|
| Cat 1, purchased goods and services | 122 | 119 | Well to tank emissions of purchased third party energy products. Non energy goods and services are excluded |
| Cat 3, fuel and energy related activities | 103 | 117 | Upstream emissions of fuels and energy Shell buys, not covered in Scope 1 or 2 |
| Cat 9, downstream transport and distribution | 4 | 3 | Distribution of sold products |
| Cat 11, use of sold products | 836 | 845 | Combustion of the oil and gas Shell sells. This is the number that moves |
| Total significant Scope 3 | 1,065 | 1,084 | Four of fifteen categories. The other eleven are assessed as insignificant |
Because acquisition and disclosure are two different tracks
This is the point that resolves almost every confusing thing a Shell supplier experiences: the questionnaire that seems to go nowhere, the platform invitation with no contractual teeth, the inconsistency between one Shell business unit and another. Shell's supplier carbon data collection is decoupled from its statutory Scope 3 disclosure. The data you provide is not feeding the number Shell publishes.
What it is feeding is procurement. Shell's own CDP Climate Change response describes collecting GHG emissions data and targets at least annually from around 3 percent of suppliers by number, representing about 26 percent of procurement spend and about 28 percent of supplier related Scope 3. That is the 2023 submission covering 2022 data, and it is the most recent public CDP response on shell.com, so date stamp it rather than presenting it as current.
It is also feeding the direction of travel. Shell publicly retired its 2035 target of a 45 percent reduction in net carbon intensity and loosened its 2030 target to 15 to 20 percent against 2016. A Shell spokesperson explained the 2035 decision in March 2024 by saying that when the target was provided, it was assumed the world would develop an accounting system for tracking carbon emissions, that this has not happened, and that Shell therefore cannot track the 2035 target today.
Read that quote as a supplier. A supermajor abandoned a public target because the carbon data infrastructure does not exist. The data you are being asked for is the infrastructure. That reframes the request from compliance chore to market structure, and it tells you where the leverage sits.
Ariba, the Hub, and the prequalification communities
SAP Ariba is Shell's procurement platform. Shell runs a Supplier Qualification System and requires a Supplier Profile Questionnaire before a supplier can take part in Ariba managed sourcing events. Shell publishes an Ariba supplier registration guide on shell.com. This is the gate most suppliers actually hit first, and the ESG content in it is qualification content, not inventory content.
The Shell Supplier Energy Transition Hub, launched in 2021, is the only carbon data platform Shell has ever publicly named. It is free of charge and open even to non suppliers, and its purpose is to help suppliers set emission ambitions, track performance, share best practice and exchange emissions data. Harry Brekelmans, then Shell's Projects and Technology Director, described it at launch as a great example that it is not just technology, but collaboration, that will drive transformation to net zero emissions. Shell reported 1,039 suppliers joined by the end of 2022, up from 258 in 2021, of which 460 had set emission reduction targets.
Be honest about what happened next, because nobody else writing on this query is. The Hub is not mentioned in Shell's Sustainability Report 2023, nor in the FY2025 Integrated Annual and Sustainability Report, and Shell has published no participation figures since 2022. That is not evidence it has been retired. It is evidence Shell has stopped reporting on it. State it that way.
Regionally, Achilles and the Oil and Gas Europe community are the prequalification route used across UK and European oil and gas supply chains by Shell and its peers, and they carry carbon modules. For many suppliers the first carbon question arrives there, not from Shell directly.
Six fields, and only one of them is a number
Whether the request comes from Shell, from Achilles, from EcoVadis, from CDP Supply Chain or from a customer in another sector, the credible supplier data pack under the GHG Protocol Corporate Value Chain standard and the PACT methodology is the same six things.
Product carbon footprint per functional unit
Kilograms of CO2e per kilogram, per unit or per litre, cradle to gate. Not a company total. PACT and Together for Sustainability both work at this level.
Scope 1 and Scope 2 of the supplying entity
Current year and one prior, with Scope 2 reported both market based and location based. This is the cheapest credible artefact you can produce and it unlocks nearly every questionnaire.
Emission factor methodology and source
Which database, which version, which vintage. Ecoinvent 3.10 is an answer. Industry averages is not.
Allocation method
Mass, economic or physical causality. This is the single most contested field in any footprint challenge, and PACT version 3 tightened it. Document it before you are asked.
Verification and assurance level
None, self declared, limited or reasonable, and by whom. Assurance is the trust bottleneck, which is why the TfS product carbon footprint guideline was audited by TUV Rheinland.
Data quality score
The GHG Protocol data quality indicators, plus your primary to secondary data ratio. Under CSRD your ratio becomes your customer's disclosure, which is why they now test it.
Regulation is pushing, and the EU Omnibus put a ceiling on it
Three drivers are converting spend based estimates into demands for primary supplier data. IFRS S2 is the first major global standard to require Scope 3, and adoption is spreading across jurisdictions. California's SB 253 has CARB requiring Scope 1 and 2 reporting from 2026 with Scope 3 beginning in 2027. And the GHG Protocol Scope 3 standard is itself under revision, with a Phase 1 progress update published on 31 March 2026, a public consultation draft expected in the second half of 2026 and a final revised standard targeted for late 2027.
But there is a ceiling, and almost nobody writing about supplier carbon data in an energy context has told you about it. The EU Omnibus, adopted on 24 February 2026 and published in the Official Journal on 26 February 2026, narrowed CSRD scope and introduced a value chain cap: undertakings with 1,000 employees or fewer may decline to provide information beyond the VSME standard for a customer's CSRD reporting.
Understand precisely what that cap does and does not do. It limits what can be demanded of you to support a customer's CSRD disclosure. It does not limit what a customer can ask for commercially, in a tender, or under a contract. So use it to negotiate scope, politely and in writing, not to refuse. That distinction is the practical difference between a supplier who looks difficult and a supplier who looks competent.
It is also worth reading Shell's own gate correctly. Shell introduced a policy within its Category Management and Contracting Process in 2024 setting out enhanced due diligence for new contracts with the highest potential impacts, and 2025 was the first full year it was operational. That gate is scoped to human rights, not to carbon. Shell built a formal supplier due diligence mechanism and pointed it somewhere else.
Six stages, and three moves that get you paid
Stage 0, work out which gate you are at. Ariba qualification, a tender ESG annex, the Supplier Energy Transition Hub, Achilles prequalification, or a CDP or EcoVadis request from a different customer. They demand different things and most suppliers answer the wrong one.
Stage 1, get the entity number before the product number. Scope 1 and Scope 2, market and location based, current year plus one prior. Stage 2, produce one product carbon footprint, for your highest revenue product, cradle to gate, under PACT version 3 or the TfS guideline if you are in chemicals. One defensible footprint beats a portfolio of undocumented ones. Stage 3, declare your data quality honestly. A supplier who says 60 percent primary, limited assurance, ecoinvent 3.10 is instantly more credible than one claiming a precision it cannot defend, and auditors now test exactly this. Stage 4, buy a rating only when a customer asks for one. Stage 5, know your ceiling under the EU value chain cap.
Then Stage 6, the part that pays. Bid with a delta, not a number. Our valve has a footprint of X kilograms CO2e per unit, 22 percent below the sector average, is a scoreable tender answer. We are committed to net zero is not. Second, sell the customer's arithmetic back to them: under spend based estimation, your improvements are invisible to your buyer and the only way their number falls is by buying less from you. Offer primary data and you hand them a reduction they can book. Price that. Third, be the easy supplier. CDP reports that fewer than half of companies which request environmental data from suppliers actually receive it. Responding fully and on time puts you in the top half of a major's supply base, which is a shockingly low bar and a real advantage at renewal.
For the underlying category mechanics, our Scope 3 Category 1 explainer is the parent piece, and What Is a Sustainable Procurement Application covers the Ariba and qualification layer in detail.
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You supply non energy goods to Shell. Where do your emissions appear in Shell's reported Scope 3?
Frequently asked
Shell has never publicly named a mandatory supplier carbon data platform. Its Supplier Principles require suppliers to comply with environmental law, use energy and natural resources efficiently and continually look for ways to minimise emissions, which is an effort obligation rather than a data submission obligation. In practice carbon questions reach suppliers through SAP Ariba qualification, tender ESG annexes, the voluntary Supplier Energy Transition Hub, and regional prequalification communities such as Achilles.
If you supply non energy goods or services, no. Shell's basis of preparation states that Category 1 covers well to tank emissions from purchased third party energy products and that emissions from purchased non energy products are not included. Category 1 was 122 million tonnes CO2e in 2025, calculated from well to tank emission factors for crude, gas, refined products, LNG and biofuels.
It is a free platform Shell launched in 2021, open even to non suppliers, for setting emission ambitions, tracking performance and exchanging emissions data. Shell reported 1,039 suppliers joined by end 2022, of which 460 had set reduction targets. Shell has published no participation figures since 2022 and the Hub is not mentioned in the Sustainability Report 2023 or the FY2025 Integrated Annual and Sustainability Report. That is not evidence it has been retired, only that Shell has stopped reporting on it.
Registration and qualification run through SAP Ariba, using Shell's Supplier Qualification System and Supplier Profile Questionnaire. Carbon questions typically ask for your entity level Scope 1 and Scope 2, a product carbon footprint per unit, your emission factor source and version, your allocation method, your assurance level and your primary to secondary data ratio. In the UK and Europe the first carbon question often arrives through Achilles prequalification rather than from Shell directly.
Commercially you are scored down rather than excluded, because most majors still fall back on spend based estimates. Legally, if you have 1,000 employees or fewer, the EU Omnibus value chain cap adopted on 24 February 2026 lets you decline to provide information beyond the VSME standard for a customer's CSRD reporting. That cap does not apply to commercial or contractual requests, so it is a tool for negotiating scope, not for refusing.
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