By Emmanuel Delplanque, Co-Founder & CEO of BE-CAUSE. Every buyer with a Scope 3 target eventually reaches the same wall: the suppliers that determine the trajectory are in Asia, most of them in China, and the only tool the buyer has deployed so far is a questionnaire. A questionnaire measures willingness to answer. It does not fund a heat recovery loop, it does not commission a rooftop solar array, and it does not train a plant manager in activity-data collection.
The practical answer has four parts: diagnose in the supplier's own language, cost the projects at factory level, restructure the commercial relationship so the project is bankable, and verify the result with evidence rather than declarations. That is what BE-CAUSE runs as the Strategic Supplier Development Program (SSDP), from Shanghai, in Mandarin and Cantonese.
Why a questionnaire cannot reduce a single tonne
Supplier questionnaires remain useful for screening and for regulatory evidence trails. They fail as a reduction mechanism for four structural reasons.
- They ask for outcomes, not causes. A supplier can report a coal-heavy energy mix without any pathway to change it, because the boiler, the lease and the grid contract are not procurement decisions.
- They are written in the buyer's language and the buyer's accounting vocabulary. Plant engineers who control steam, compressed air and process heat rarely read them.
- They carry no capital. Most Chinese Tier-1 and Tier-2 factories can identify savings but cannot justify a two-to-four-year payback against volatile order books.
- They are unverifiable. A declared 30% renewable share and a green electricity contract with retired attributes are not the same claim, and a PDF does not distinguish them.
The consequence is familiar: response rates rise, emissions do not. Screening tells you where to act — our Net Zero Pulse exists precisely for that — but the reduction happens inside the factory.
Step 1 — Local-language diagnosis inside the factory
The first working session is technical, not administrative. It is held on site or by video with the people who actually operate the plant: the energy manager, the production manager, the maintenance lead, and whoever signs capital expenditure. It runs in Mandarin or Cantonese, with the buyer's requirements translated into operating terms.
- Energy and fuel balance: electricity, steam, coal, gas, diesel, purchased heat, twelve months of meter and invoice data.
- Process mapping: where energy is consumed per production step, and which utilities are shared across customers.
- Allocation logic: how the factory can attribute emissions to the buyer's specific products, which is what the buyer needs for its own Scope 3 category 1.
- Constraint mapping: lease duration, roof ownership, local grid tariff structure, provincial dual-control rules, available subsidies.
- Data capability: who collects what, in which system, and what would make the next reporting cycle repeatable.
This diagnosis produces something a questionnaire never produces: a factory-level baseline the supplier accepts as its own, because it was built from its own meters and its own constraints.
Step 2 — Costed factory projects, not generic recommendations
"Improve energy efficiency" is not an action plan. Each opportunity is turned into a project sheet: scope, expected abatement in tCO2e per year, capital cost, operating impact, payback, implementation time and required approvals. The table below shows the project families we see most often in Chinese manufacturing sites; the numbers are indicative ranges, not a promise for a specific plant.
| Project family | Typical abatement lever | Indicative payback | Main constraint |
|---|---|---|---|
| Rooftop solar PV | Displaces grid electricity on site | 4–7 years, or 0 with a third-party investor | Roof ownership and lease duration |
| Green power procurement / PPA | Reduces market-based Scope 2 of the supplier | Immediate cost delta | Provincial market rules and attribute retirement |
| Boiler conversion and heat recovery | Removes coal or recovers waste heat | 2–4 years | Process interruption and permits |
| Compressed air and motor upgrades | Cuts baseline electricity 5–15% | 1–3 years | Maintenance capacity |
| Process electrification | Replaces direct fossil combustion | 3–6 years | Grid capacity and product quality validation |
| Material yield and scrap reduction | Cuts upstream purchased-goods emissions | Under 12 months | Quality specification owned by the buyer |
Two of those levers are decided by the buyer, not the supplier: material specification and order stability. Any programme that ignores them asks the factory to solve a problem the contract created.
Step 3 — Buyer–supplier incentives that make the project bankable
This is where most supplier engagement programmes stop, and where reductions are actually won or lost. A factory with a 12% margin and a 12-month order horizon will not commit to a four-year payback without a commercial reason. The buyer has levers that cost far less than the emissions they unlock.
- Volume or contract-duration commitment aligned with the payback period.
- Shared capital: co-investment, an equipment advance recovered in unit price, or an introduction to green finance channels — Chinese banks price PBOC-eligible green loans below standard corporate rates.
- Gain sharing: the energy saving is split for a defined period instead of being absorbed into the next price negotiation.
- Scorecard weight: measured reduction and data quality carry real points in supplier ranking and allocation decisions.
- Specification flexibility: accepting a recycled-content grade or a revised tolerance often removes more carbon than any on-site project.
“If the supplier's decarbonisation project only improves the buyer's report and the buyer's next price request, the supplier has learned exactly what to do next time: answer the questionnaire, change nothing.”
Step 4 — Evidence-based verification
A reduction claim that cannot survive a CSRD limited assurance review or an auditor's sampling is a liability, not an asset. Verification is designed into the project from the start.
- Baseline documentation: twelve months of invoices and meter readings, with the boundary and allocation method written down before the project starts.
- Post-implementation measurement: the same meters, the same boundary, normalised for production volume so the saving is not an artefact of a slow quarter.
- Attribute integrity: green electricity contracts checked for issuance, vintage and retirement, not accepted as a certificate photograph.
- Physical assessment where the exposure justifies it: an on-site check of installed equipment and operating logs, escalating to an accredited third-party inspection for high-stakes claims.
- Segregated data handling: raw supplier data can remain in China while the buyer receives the scores, calculations and agreed evidence — a requirement, not a preference, under current Chinese data rules.
What a working session looks like in practice
A typical SSDP engagement runs over roughly eight to twelve weeks per supplier group. Week one to two: data request and baseline reconstruction. Week three: on-site or remote technical working session in Mandarin or Cantonese. Week four to six: costed project sheets, financing options and a buyer–supplier negotiation pack. Week seven onwards: implementation support, then a verification cycle with documented evidence the buyer can hand to its assurance provider.
Screening comes first — Net Zero Pulse at ¥4,000 / €550 per block of 50 suppliers tells you which factories deserve this depth. SSDP is then priced per supplier profile, at €800 / ¥6,000, or €1,700 / ¥12,750 with a physical assessment in China.
The shift is simple to state and difficult to fake: stop asking Chinese suppliers to report their emissions, and start giving them a costed, financed, verifiable reason to reduce them. That is the only version of supplier engagement that appears in next year's Scope 3 number.