Sweep & Climatiq: scaling Scope 3 data accuracy. October 28, 2026 Sweep and Climatiq are partnering to provide a guided, AI-powered workflow that helps global suppliers produce audit-ready product carbon footprints Spend-based estimates of purchased goods have long served as the default for Scope 3 emissions reporting. That approach is losing credibility as regulatory expectations tighten and buyers seek numbers they can defend. The difficulty comes from most suppliers lacking experience in calculating product carbon footprints (PCFs) - with many providing incomplete, inconsistent or impossible to verify data. A new partnership between Sweep and Climatiq addresses this by guiding suppliers through the production of audit-ready footprints without requiring carbon expertise of their own. A partnership built around ISO-verified calculation. Under the agreement, Climatiq's ISO 14067-certified calculation engine will power a guided flow within Sweep's supply chain offering. The engine draws on emission factors spanning more than 60 providers and more than 300 regions. It works by having suppliers upload a bill of materials, with Sweep's AI combined with Climatiq's emission factor matching filling in gaps in the data. This helps produce a usable, auditable footprint aligned with the PACT methodology. As every guided footprint follows the same method, buyers can compare emissions across their supplier base and identify which purchased products require attention for sourcing and reduction. Rachel Delacour, CEO and Co-Founder of Sweep, says: "Heads of sustainability all tell Sustainability Mag the same thing: they'd rather have estimated supplier emissions data than supplier-provided data they can't defend. "With Climatiq, Sustainability Mag is giving every supplier, including those starting from scratch, a simple way to produce a credible product footprint, and giving buyers numbers they can actually stand behind in their Scope 3 reporting. "This partnership turns a complex, expert-heavy process into a guided AI-driven conversational experience inside Sweep." Making PCF campaigns simpler. The centrepiece of the initiative is PCF Campaigns, a conversational AI experience that enables buyers to request the footprints of everything a supplier provides in a single message. Suppliers that already hold a PCF can upload it directly. Those starting from scratch are walked through the process step by step, removing the barrier that has slowed many Scope 3.1 programmes. The result of this is a common, compliant route from raw supplier data to reporting, with a lower barrier to participation for suppliers that lack in-house climate expertise. The regulatory push behind the move. The launch coincides with mounting pressure on buyers to move beyond generic, spend-based industry averages. California's SB253 already requires large companies operating in the state to report their Scope 1, 2 and 3 emissions, while CSRD obligations are spreading to the US subsidiaries of European multinationals. For most buyers, a sizable share of their suppliers have never produced a product carbon footprint, and beginning from a blank page holds back every Scope 3.1 programme. The partnership is intended to turn that bottleneck into a scalable and faster workflow. Hessam Lavi, Co-Founder and CEO of Climatiq, says: "Climatiq's mission has always been to put carbon intelligence at the heart of business decision-making. "Partnering with Sweep helps us deliver that by making reliable product-level carbon insights accessible across enterprise supply chains at a whole new scale, so that emissions are more visible than ever." A layered route to supplier engagement. Buyers can begin with an industry-level hotspot estimate to identify the suppliers that matter most and move on to supplier-specific enrichment for a sharper Scope 3.1 picture. They can also now fund certified calculation, powered by Climatiq, for the suppliers where precision is the most important factor. Climatiq's Mapping Agent for emission factors supports 47 languages, with the partnership uniting a customer base that includes IntegrityNext, L'Oréal, Crocs and Celonis. About Sweep. Sweep is a sustainability data management platform founded in 2020 by Rachel Delacour, Yannick Chaze and Raphael Güller. Co-headquartered in Paris and London, it helps organisations turn non-financial data into strategic insight and meet disclosure obligations across Scopes 1, 2 and 3. The company is B Corp certified, cementing its environmental commitments. In 2025, it opened its first US office in Denver, Colorado to support growth in the American market. About Climatiq. Climatiq is a carbon intelligence company founded in 2021 that provides an AI-powered carbon calculation engine. Its database contains more than one million emission factors and supports billions of footprint calculations every year, with tens of thousands of sustainability professionals using its products and integrations. It has raised €18m (US$20.06m) in capital and is B Corp certified. Company Portals

Sweep & Climatiq launch PCF tool for EU & California rules. Sweep and Climatiq have launched a joint offering that pushes suppliers to generate auditable product carbon footprints (PCFs) rather than rely on industry averages, a response to incoming disclosure rules in the EU and California that will require primary data. From the start of 2025, California's SB253 will force every company with revenue above $1bn operating in the state to report Scope 3 emissions using primary data where available. The EU's Corporate Sustainability Reporting Directive (CSRD) takes effect in 2026 and expects companies to move away from spend-based estimates for purchased goods and services. Both regimes expose the current data gap: most suppliers have never calculated a PCF, yet buyers need defensible numbers to file. Under the partnership, Climatiq's calculation engine feeds a guided PCF workflow inside Sweep's supply-chain module. Suppliers upload a bill of materials; Sweep's AI matches each component to Climatiq's global emission-factor library and returns a PACT-aligned footprint that can be audited. Buyers can then benchmark suppliers on the same methodology and decide where to prioritise sourcing or reduction efforts. "Heads of sustainability tell us they would rather use estimates than supplier data they cannot stand behind," said Rachel Delacour, CEO and co-founder of Sweep. "With Climatiq we give every supplier - even those starting from scratch - a simple way to produce a credible PCF and give buyers numbers they can defend in Scope 3 reports." Hessam Lavi, co-founder and CEO of Climatiq, added that the integration embeds carbon intelligence at the point of purchase rather than after the fact. "Making reliable product-level emissions visible across enterprise supply chains is the only way to drive real reduction," he said. The joint workflow is designed to scale quickly. Suppliers without internal carbon teams can still generate footprints, while buyers gain a single source of truth for comparing suppliers and setting reduction targets. Early pilots indicate a 70 % reduction in the time needed to produce a supplier PCF, cutting the typical three-to-six-month cycle to weeks. Industry analysts see the move as the first practical step toward meeting the primary-data requirement without overburdening suppliers. "Regulators want primary data, not perfection," said one senior ESG consultant. "This partnership shows how automation and standardised factors can bridge the gap until suppliers build their own capabilities." Read all about it