BMW and CATL collaborate on digital standards and carbon transparency in battery supply chains

BMW Group and China’s Contemporary Amperex Technology Co. Ltd. (CATL) have formalised a new phase of cooperation aimed at cutting carbon across battery supply chains and enabling cross‑border data flows, signing a memorandum of understanding in Beijing on 25 February 2026. The move, announced by CATL and confirmed by BMW, broadens a relationship that began in 2012 from a supplier arrangement into a joint effort on digital standards and sustainability tools.

The MOU centres on pilot projects that will use the Catena‑X automotive data ecosystem to facilitate trusted information exchange and to pilot carbon‑footprint accounting compatible with the emerging Battery Passport framework. According to CATL, the pilots are intended to demonstrate interoperable, auditable data flows that can underpin regulatory and commercial transparency for battery value chains.

BMW has been publicly promoting Catena‑X as a route to digitise supply chains, improve traceability and give suppliers and manufacturers greater control over shared data. According to BMW Group, Catena‑X aims to create standardised, secure data links across international supply chains, a capability the automaker says is crucial as regulators and customers demand greater visibility into lifecycle emissions.

The agreement was signed while Germany’s chancellor, Friedrich Merz, was in China with a business delegation; BMW Chairman Oliver Zipse accompanied the visit and underlined the strategic importance of cooperation with Chinese partners for the company’s global innovation and market plans. BMW is preparing to unveil a locally developed “New Generation” model, the BMW iX3 Long Wheelbase, at the Beijing Auto Show in April 2026, reflecting the firm’s China‑tailored product strategy.

Market context underlines why industrial decarbonisation and data interoperability are priorities. Industry data from market research firm SNE Research shows global electric‑vehicle battery installations reached 1,187 gigawatt‑hours in 2025, a 31.7% rise on the previous year. CATL accounted for 464.7 GWh of that total, equivalent to a 39.2% market share, leaving it substantially ahead of rivals, according to SNE Research. For manufacturers and suppliers, such scale concentrates both emissions responsibility and the potential leverage to drive supply‑chain decarbonisation at speed.

The MOU builds on previous strategic links between CATL and other players in China’s low‑carbon logistics and manufacturing ecosystem. In April 2025 CATL announced a strategic framework with China Logistics Group to pursue low‑carbon logistics solutions and zero‑carbon industrial park concepts, and Catena‑X has been active in China: the Catena‑X network, together with the China Association of Automobile Manufacturers and the German Association of the Automotive Industry, recently ran a pilot onboarding 50 Chinese companies to advance interoperable data collaboration in the market.

Industry observers note two practical implications. First, operationalising a Battery Passport that meaningfully captures upstream emissions requires standardised greenhouse‑gas accounting across geographically dispersed suppliers, robust provenance tracking and mechanisms to protect commercially sensitive data while enabling verification. Second, the commercial benefits of shared decarbonisation data, reduced compliance costs, faster supplier audits, and more efficient circular‑economy initiatives, depend on adoption beyond single supplier‑OEM pairs to entire supplier tiers.

The move also requires editorial caution: company statements frame the initiative as a step towards trusted data sharing and carbon accounting, but the transition from pilot to industry‑wide practice will confront challenges including disparate reporting methodologies, third‑party verification capacity and differing regulatory expectations across jurisdictions. Speaking to the need for scale, Catena‑X’s China pilots aim to prove interoperability across a complex supplier base; whether they will resolve the methodological and governance questions at the heart of Battery Passport ambitions remains to be seen.

For industrial decarbonisation professionals, the MOU signals a convergence of strategic capabilities: a dominant battery manufacturer’s willingness to engage on data standards, an OEM’s commitment to digital supply‑chain architecture, and nascent multi‑stakeholder pilots to operationalise transnational reporting. If those pilots deliver credible, auditable emissions data, they could substantially reduce the friction companies now face in meeting tightening regulatory disclosure requirements and corporate net‑zero commitments. Conversely, failure to agree on common metrics or to scale verification could limit the initiative’s impact to bilateral efficiency gains rather than systemic change.

The pact therefore represents both an immediate testbed for technical and governance solutions and a litmus test for whether leading players can translate market dominance and digital platforms into transparent, lower‑carbon industrial practices across entire battery value chains. The coming months of pilot work on Catena‑X and the Battery Passport framework will be crucial to determining whether the effort becomes a template for wider industry adoption or remains a high‑profile but limited experiment.