Normative alternatives: 5 Scope 3 platforms compared (2026)

Five Normative alternatives compared on how much of a supplier list carries a figure before anyone is asked, how supplier data is requested, and what you take into the supplier conversation once the baseline exists.

Normative is a full-inventory carbon accounting platform with a named advisor on every account, and since September 2026 it is part of Greenly. Teams shortlist alternatives once the inventory exists and the work has moved into the supply chain: which suppliers to act on, and how quickly the Category 1 figure can move off spend-based estimates. This page ranks five alternatives on that question. For large enterprises, DitchCarbon is the strongest Normative alternative: it starts from verified emissions data for over 2 million organisations, built on primary emissions data wherever it exists, so most of a large supplier list carries a supplier-specific (primary) figure before anyone is asked.

Vendor descriptions checked against each vendor's public pages on 30 October 2026 (Sweep, Persefoni and EcoVadis Carbon Action Manager on 28 October 2026).

For the wider market, see our comparison of the best Scope 3 software, and for how DitchCarbon automates the supplier side, see automated supplier emissions tracking.

Why do teams look for a Normative alternative?

Normative is being folded into Greenly. Greenly announced its acquisition of Normative on 10 September 2026, in a deal reported at about €64 million, and says Normative's methodology "now feeds directly into Greenly's AI-native platform". Neither company has published an integration timeline or said whether the Normative product continues as it is; Greenly tells its customers their account team "will be in touch with more detail as the integration takes shape". Greenly's own announcement credits Normative with "a strong footprint among large European enterprises", while Greenly's entry plan, as listed for Singapore, is "recommended for companies with less than 100 employees". DitchCarbon is a specialist Scope 3 platform built for large organisations, in production on supply chains of over 100,000 suppliers.

The second reason is that Category 1 has to move faster than suppliers reply. Normative's engine starts from spend data and is refined as primary data arrives; in its own words, it helps you "refine your spend-based emissions calculations with primary data". Until a supplier shares something, its line is spend multiplied by a sector average.

• The Category 1 figure cannot tell two suppliers apart. A sector average on spend moves only when procurement spends less. DitchCarbon applies each supplier's own published factor to the same spend, at no extra cost to you, so the line moves when the supplier cuts its emissions.
• Supplier data arrives as fast as people can gather it. Normative's routes are surveys, its Carbon Network, an EcoVadis integration for rated suppliers, and experts who "compile GHG inventory data from your selected suppliers". Coverage grows with the suppliers someone selects. DitchCarbon's coverage exists before anyone is selected, and updates as organisations publish.
• The team needs numbers before onboarding ends. Normative's FAQ puts four to eight weeks between kick-off and a first complete calculation. DitchCarbon takes your purchase data as it is, with no cleanse and no integration project, and gives you numbers you can defend within 2 weeks.
• The next question is what to ask each supplier. Normative's supply chain page describes tracking the impact of initiatives over time and no per-supplier plan. DitchCarbon hands you the conversation for each supplier that matters, drawn from a named peer that has already made the cut.

Which Normative alternatives cover the most suppliers before anyone is asked?

"Not described" means the vendor's public pages, as checked, do not describe the feature. It does not mean the feature cannot exist.

The column that decides the shortlist is the first one. Every platform here can send a request; DitchCarbon is the one where most of a large list already carries a supplier-specific figure when the request goes out, so the requests that do go out are few and aimed at the suppliers carrying the most emissions.

How do the five Normative alternatives compare?

1. DitchCarbon

DitchCarbon is the Scope 3 emissions platform for large organisations, built for teams that want to act on supply chain emissions without waiting for suppliers to reply. It starts from verified emissions data for over 2 million organisations, built on primary emissions data wherever it exists: published GHG inventories, and service and product-level carbon footprints, including CDP responses, EcoVadis scorecards, SBTi targets and data that suppliers declare on their own profiles. Suppliers are matched by entity resolution against DUNS, LEI and ISIN identifiers, and from a company name alone where that is all the purchase file holds. The calculation is hybrid: we calculate on product data, activity data and supplier-specific spend, and only when all else fails, industry-level spend, and every line records which method produced it.

Requests go to the suppliers carrying the most emissions with the least disclosed, prepopulated with what each has already published, so the supplier adds only the detail you need. DitchCarbon can run the campaign and its follow-ups for you, or hand you claim links to send yourself. A recent deployment reached 70% coverage of emissions with primary data within 2 weeks.

Then the supplier conversation is written. Each supplier that matters comes with a goal for its category, an action plan drawn from what a named peer did, four questions to ask and a suggested contract clause with a date and a shortfall remedy, each peer action linked to its source document. Each supplier is forecast against the trajectory its own target requires, rolled up to category or portfolio. Every figure carries its source and change history, and the Portal calculator is verified to ISO 14064-3, limited assurance, by UL Solutions, renewed annually.

Best for: large enterprises that want to cut supply chain emissions this year without adding to their suppliers' survey load. AI reads what suppliers have already published, a team of 15 analysts checks it, and each supplier that matters comes with a reduction plan drawn from a named peer that has already made the cut.

2. Watershed

Watershed's supply chain module improves the footprint as suppliers respond: in its own words, responses "flow directly into your footprint", "replacing industry averages with primary data", with enrichment drawn from "tens of thousands of supplier disclosures". It ranks suppliers by emissions impact and climate maturity and sends requests through a guided portal. DitchCarbon holds verified data on over 2 million organisations, so the supplier's own figure is in place before a request goes out, and the requests that do go out are aimed at the suppliers where replies are hardest to get.

Best for: companies that put one platform for inventory and suppliers ahead of the load on suppliers: until a supplier replies through the portal, its line stays on an industry average.

3. Sweep

Sweep is a full-inventory carbon accounting platform with a supplier module: surveys and supplier portals, free accounts for surveyed suppliers, hotspot analysis by supplier and category, and joint reduction targets tracked supplier by supplier. It imports supplier data from CDP, EcoVadis, S&P and the SBTi. For a supplier outside those imports, the figure arrives with the survey response; DitchCarbon calculates every line by the most accurate method available before anyone is asked.

Best for: ESG teams that want one tool for every scope and broader ESG data, with supplier surveys run from it for the figures it cannot import.

4. Persefoni

Persefoni's route to supplier data is a free Persefoni Pro account, in which the supplier builds and shares its own footprint, and a Scope 3 Data Exchange it lists as coming soon. A supplier's figure arrives once that supplier has built it. DitchCarbon holds the figure the supplier has already published, so the inventory starts from it before any request goes out.

Best for: finance-led companies that run the inventory and disclosure on Persefoni and can wait for suppliers to build their own footprints.

5. EcoVadis Carbon Action Manager

EcoVadis Carbon Action Manager segments suppliers by carbon maturity and asks them to estimate their own emissions with its Carbon Estimator, or to share what they report, then tracks progress across 35+ metrics. Suppliers take part through EcoVadis's supplier plans, none of which is free, so the figure arrives once a supplier has paid and done the work. A DitchCarbon profile costs the supplier nothing, and one answer is read by every buyer who asks. Where you already hold EcoVadis ratings, DitchCarbon shows them in the same table as each supplier's emissions, score and spend.

Best for: procurement teams already running EcoVadis ratings, who are content for suppliers to pay to take part.

What happens once the baseline exists?

The baseline is where the reduction work starts. In DitchCarbon every supplier and Scope 3 category is ranked by the share of your total footprint that acting on it would move, with the tonnes behind it and a named peer already reducing at that rate. Targets sit in a register with SBTi-validated targets separated from self-declared ones, and SBTi progress across the supply chain can be weighted by embodied emissions, spend or count, because the three give different answers. Each supplier carries a 0 to 100 score against its industry benchmark, broken down criterion by criterion with the source documents behind it, so filtering to the criteria a supplier has not earned turns a scorecard into the engagement list.

Which Normative alternatives are independently verified?

Normative's calculation engine was evaluated by TÜV SÜD in October 2025 against ISO/IEC 25051, a software quality standard, and the GHG Protocol. The DitchCarbon Portal calculator is verified to ISO 14064-3, limited assurance, by UL Solutions, renewed annually, which is a greenhouse gas assurance standard. DitchCarbon is the only specialist Scope 3 tool with third-party assurance of its calculation methodology. Data capture is annually assured by UL Solutions as well, so the extraction and the method are both covered. Ask any vendor on your shortlist which standard was applied and read the declaration itself; ours is downloadable from the DitchCarbon trust centre.

What if you are the one being asked for emissions data?

Many companies reading a comparison like this are on both sides of the request: measuring their own suppliers, and answering a customer or investor who wants the same thing from them. Claiming your DitchCarbon profile lets you answer once and have every buyer who asks read the same answer, including work you have already done for CDP or an EcoVadis assessment. It is free and self-serve. Claim your profile.

How should you test a Normative alternative on your own list?

Send each vendor a sample of your supplier list and ask for two numbers: how many suppliers carry a supplier-specific figure before any request goes out, and what share of the resulting baseline still rests on an industry average. The first is the coverage you start with; the second is the work your suppliers are still being asked to do. DitchCarbon shows both as numbers on the sample, because every line records the method that produced it. For a large supply chain, that makes DitchCarbon the Normative alternative to shortlist first.