SEMCORP halted, CATL fined, BYD audited — Hungary opens a retrospective review of Chinese investment

01 | Six months from election to shutdown

The new government first called the legality of its predecessor’s decisions into question as a whole, then turned to projects one by one.

From 14 May, the review widened from confidential contracts involving foreign parties and decision-making on priority projects to certain investment contracts signed since May 2022 and certain industrial investment permits issued since 2021; on 5 June, a nationwide inspection of the battery supply chain followed. In September a new environmental compliance oversight body was set up, less than six months after the election.

The review does not draw lines by investor nationality: the Paks nuclear power plant is in scope too. The basis of a defence should therefore not be “foreign investor status” but “procedural compliance”.

EU funds are the accelerator: on 29 May, Hungary and the European Commission agreed to unfreeze €16.4 billion, but the money is tied to reform milestones, and if they are missed, part of the recovery funding lapses at year-end. Published penalties are therefore also evidence of reform progress for Brussels, and public penalties are more likely than quiet negotiated settlements.

02 | Mechanism: why the “incentive windfall” can be withdrawn

The substance of political-cycle risk is “the revocability of administrative commitments”: the incentives below all rest on administrative decisions, not on international treaties or long-term statutory commitments, and what executive power can grant, it can also re-examine.

The Orbán-era package of incentives included:

• Subsidies and tax relief: subsidies of up to 35% on equipment investment and a 200% super-deduction for R&D expenses
• Environmental exemptions: environmental impact assessment timelines markedly shorter than in other EU countries
• Foreign worker quotas: close to 10,000 places approved for BYD’s Szeged project, against a national cap on third-country worker permits of 65,000 in 2024 and 35,000 in each of 2025 and 2026
• Infrastructure: a cumulative total of about HUF 121 billion invested in the Debrecen southern economic zone

An investment whose core returns depend on subsidies, exemptions or fast-track access granted by the host government should be assessed as sovereign risk, not commercial risk.

The new government’s sequence is now to account first for public cost, local employment and environmental risk, and only then decide on subsidies, permits and expansion.

03 | Layers: how three layers of regulation bear on a single plant at once

Three layers of rules apply at the same time, and all of them put the burden of proof on the company.

• Foreign Subsidies Regulation (FSR): a company that has completed every procedure in Hungary may still face a retrospective review at EU level; when submitting evidence across borders, it may face both a duty to cooperate with EU investigations and compliance requirements under Chinese law.
• Batteries Regulation: as of September 2026, the limits for carbon footprint classes and maximum thresholds are still being drafted, and the obligation cannot yet be described as fully in force; but a result calculated in China will not necessarily be accepted by the EU, so data collection and third-party verification should start early.
• Industrial Accelerator Act: under the current draft, investors from third countries holding more than 40% of global capacity in the relevant industry may need prior notification and approval, and an EU employee share of no less than 50% is the mandatory one of the six conditions; it is still only a proposal, and its scope and conditions may change.

The compliance workload is therefore not additive but multiplicative: companies need a single body of evidence that is self-substantiating, traceable and reusable, not three separate compliance reports.

04 | Divergence: four projects, four kinds of pressure

The form of pressure is closely tied to the project’s stage: plants in production face environmental enforcement, projects under construction face permit and subsidy reviews, and expansions not yet started face higher approval thresholds; the environmental record is becoming the main trigger.

The environmental authority suspended production at SEMCORP on grounds of groundwater contamination: media reports said aluminium concentrations in local monitoring wells exceeded the limit by more than 13,000 times, while the company said the leaked substance was condensate water containing no hazardous substances and did not confirm the authenticity of the test data in circulation.

Risk also travels along the supply chain: if separator supply is interrupted, downstream cell makers such as CATL have to rearrange their supply chains, so risk assessment must also cover the regulatory status of the jurisdictions where key suppliers and customers operate. Your compliance risk may come from a partner in which you hold no equity.

Korean plants are in scope too: Samsung SDI’s Göd plant and SK On’s Komárom plant joined CATL on the first oversight list in August. Korean companies went through this regulatory system earlier, and three lessons stand out:

• The fines themselves are usually not a financial threat; the real cost comes from shutdowns and frozen approvals: SK On’s Komárom plant has faced about 10 penalties since 2024, totalling only about HUF 20 million
• Permit disputes can go back and forth in the courts for years: Samsung SDI’s Göd plant has long faced challenges to its environmental permit from residents’ groups and in the courts; the permit was revoked in late 2025 and restored by the Supreme Court in February 2026
• Proactive disclosure and community engagement are an effective buffer in permit disputes: Samsung SDI committed to regularly publishing environmental measurements by independent bodies and set up a communication mechanism with residents’ organisations

05 | Limits: review is not expulsion, but the windfall really is over

Reading this shift as “Hungary no longer welcomes Chinese investment” may be the most dangerous misreading, one that leads to hasty divestment or wholesale retrenchment; but the advantages that once set Chinese projects apart really are gone.

Replacing several large Chinese projects at once is not realistic in the short term: Mercedes-Benz’s and BMW’s vehicle plants are still waiting for battery supply.

According to a partial count by TTIR, as of June 2026, 17 Chinese new-energy companies had announced or planned investments in Hungary of about €16.5 billion (roughly RMB 128.6 billion), but these are not paid-in capital actually in place.

What has gone is high-level political sponsorship, fast-track approval channels, environmental exemptions and lax policies on foreign labour. BYD’s Szeged project went through 224 rounds of government negotiations; that degree of sponsorship no longer exists.

Hungary’s tightening is not an isolated case: EU climate commissioner Wopke Hoekstra has said that Europe must bear higher short-term costs to reduce its dependence on Chinese clean energy technology. If Hungary is the “appetiser”, moving capacity from one EU member state to another does not solve the problem at the level of rules.

06 | Action: a political-premium discount framework and three checklists

Discount the part of returns that depends on host-government administrative commitments, along three dimensions:

• Tier of the commitment: revocability rises from international treaties and domestic legislation to individual government resolutions and verbal statements by officials; cash subsidies sit at the level of individual resolutions and should carry a high discount rate
• Visibility of the incentive: high-visibility incentives such as cash subsidies, environmental exemptions and foreign worker quotas are more likely to become the target of a retrospective review
• How real the localisation is: the shares of local employees and local procurement can be verified; localisation cannot prevent a review, but it does affect how the review is handled

A bridgehead is not a fixed asset: industrial logic decides “whether you can stay”, political logic decides “on what terms you stay”, and it is often the latter that determines investment returns.