The Grain-Oriented Electrical Steel Case at the WTO That Will Affect Every Electric Motor You Own

The EU has launched a WTO safeguard investigation into grain-oriented electrical steel imports. Here is why this obscure product is crucial for Europe's green transition and what the case could decide.

The WTO Committee on Safeguards notification of an EU investigation into imports of grain-oriented electrical steel — a product category that most people will never have heard of and that is critical to virtually every aspect of the green energy transition — is exactly the kind of trade policy development that determines economic outcomes in ways disproportionate to its public visibility.

Grain-oriented electrical steel (GOES) is a specialised steel product used in transformer cores and electric motor cores. It has specific magnetic properties — achieved through precise grain alignment during the manufacturing process — that make it substantially more energy-efficient for electromagnetic applications than standard steel. Transformers at every level of the electricity grid, from power station step-up transformers to the distribution transformers in every neighbourhood substation, use GOES. Electric motors in wind turbines, industrial applications, and increasingly in electric vehicles use GOES or closely related electrical steel grades.

The global GOES market is dominated by a small number of producers. Japan (Nippon Steel, JFE Steel) and South Korea (POSCO) together account for a large share of global production. The United States has a significant domestic industry. China has been aggressively expanding its GOES production capacity with state subsidy support, producing at costs that have made market penetration into the EU at prices below what European and other non-Chinese producers can match.

The EU's safeguard investigation — a trade remedy procedure authorised by WTO rules that allows temporary import restrictions when a sudden surge of imports causes serious injury to domestic industry — is responding to the specific combination of Chinese capacity expansion, price competition, and the strategic importance of domestic GOES production for European industrial policy.

For the green transition specifically, GOES supply chain security has taken on new strategic significance. The transformer shortage that has been constraining grid infrastructure expansion in Europe and North America is partly a GOES supply chain issue. Building more renewable generation capacity is constrained by the ability to produce the transformers needed to connect that generation to the grid. European GOES production capacity that is undercut by cheaper imports and subsequently closes is GOES production capacity that cannot be quickly recreated when needed.