Europe’s Battery Rules Face a Test as EU Cathode Capacity Grows

European battery suppliers say the next test for the region’s manufacturing ambitions is whether carmakers will buy locally made materials when existing trade rules take effect. Their case rests on a striking capacity projection: the European battery industry association RECHARGE expects EU cathode-material capacity to reach 121,000 tonnes in 2027, compared with estimated demand of 52,000 to 75,000 tonnes under the EU-UK Trade and Cooperation Agreement (TCA).

That projected surplus suggests the immediate constraint may be securing customers, rather than building enough capacity to meet the agreement’s requirements. But the suppliers’ output is only commercially useful if automakers choose it. A further postponement, argued the authors of a letter published by Transport & Environment, could undercut the demand that European manufacturers were encouraged to expect.

Rules designed to create a market

The TCA ties tariff-free access for electric cars traded between the EU and UK to rules of origin. Under the battery provisions described in the letter, vehicles must use qualifying European batteries and cathodes. That gives automakers a direct commercial reason to source battery materials from production in the EU or UK.

The authors describe this demand-side approach as a smaller-scale version of the proposed Industrial Accelerator Act. The mechanism is straightforward: requirements for where components come from can help turn planned factories into potential suppliers by giving manufacturers a reason to buy their output. The rules therefore matter to businesses making decisions about both supply and sourcing.

European companies invested billions after EU leaders presented battery production as important to the region’s resilience and prosperity, the letter says. The authors argue that those commitments were reinforced by the TCA. For a factory, however, capacity alone does not establish a durable business. Suppliers also need customers, and customers need confidence that the rules shaping their sourcing decisions will remain in place.

A previous extension and a new request

The original timeline already gave the supply chain extra time. At carmakers’ request, the EU and UK agreed in December 2023 to postpone the rules by three years. The letter says that the joint decision stated, “No further postponement of the incoming rules should be considered,” and limited changes to the rules before 2032.

Maroš Šefčovič, then an executive vice-president of the European Commission and now the European trade commissioner, promised “legal certainty on the applicable rules,” according to the authors. They say businesses treated the extension as a one-off and made investment decisions on that basis.

Now, the European automotive sector is again asking for the rules to be delayed, with the change sought just three months before they are due to take effect. The sector’s stated concern, as presented in the letter, is that the EU battery supply chain is not ready. The authors counter that European cathode suppliers are already producing key materials, and that their projected 2027 capacity exceeds the estimated volume needed for the TCA provisions.

The gap between the two positions is consequential for buyers. If carmakers can continue sourcing cheaper Chinese materials while retaining tariff-free access to the UK market, European suppliers may struggle to turn planned or existing output into sales. Yet applying the rules would require manufacturers to make sourcing choices within the agreement’s terms. The letter frames those choices as part of the commercial case that persuaded companies to build regional capacity.

Why carmakers’ sourcing choices matter

The European Automobile Manufacturers’ Association (ACEA) has acknowledged, in a letter to EU institutions, that the sector could be accused of acting in bad faith over the development of an integrated battery supply chain, the authors say. Their response is pointed: they argue the issue goes beyond reputation and reaches the credibility of Europe’s industrial plans.

That concern is about more than the first round of battery purchases. If rules intended to create demand are postponed just before they start to shape commercial decisions, companies considering new factories may question whether those rules will last long enough to support their plans. The authors say another delay would weaken the “Made in Europe” ambition and could affect the future of manufacturing, jobs, prosperity and resilience across Europe.

For carmakers, the practical calculation includes the availability and cost of qualifying materials, as well as access to the UK market on the agreement’s terms. For suppliers, it is whether vehicle manufacturers will commit to buying European cathodes. RECHARGE’s figures offer a capacity forecast, but they do not show how much material manufacturers will actually purchase or whether every relevant supply-chain need can be met. The source does not provide a breakdown by chemistry, producer or vehicle brand.

The next measure of credibility

The dispute puts a specific question behind broader claims about regional battery production: will the agreed sourcing requirements apply on the timetable companies were told to expect? The letter’s authors—William Todts, executive director of Transport & Environment; James Watson, director general of European Metals; and Marco Mensink, director general of Cefic—call on the European Commission to maintain the rules. They say the permanent TCA rules of origin should apply in 2027 without another delay.

The outcome will matter to automakers planning their material purchases and to suppliers trying to secure a place in their supply chains. If the rules take effect, projected European cathode capacity will have a clearer route to customer demand. If they are postponed again, the region’s manufacturing ambitions will face a more immediate test: whether factories can attract buyers when the requirements intended to support local sourcing are uncertain.

Source: Transport & Environment.