One of the European Union’s most celebrated green-investment vehicles now sits on the wrong side of the bloc’s prosecutors.

The European Public Prosecutor’s Office has opened a formal fraud probe into InnoEnergy, a flagship clean-technology investor, over suspected financial irregularities, misappropriation of public money and VAT fraud. The step turns a long-running commercial dispute into a criminal matter with EU funds at its centre.

InnoEnergy is no minor player. Since 2010 the Netherlands-based body has drawn roughly 760 million euros in EU public funding through the European Institute of Innovation and Technology. It bankrolls hundreds of clean-tech start-ups and helped launch the European Battery Alliance, casting itself as a motor of Europe’s green transition.

The fraud probe grew from a single complaint. Swedish entrepreneur Lars Wallden, whose start-up was among the first InnoEnergy backed, filed a report in March 2026 after more than a decade of dispute with the organisation. He alleges that InnoEnergy asked him to issue invoices for services another firm had already paid for, a practice that could amount to misappropriation of funds.

Doubts about the investor predate the criminal file. Reporters at Follow the Money found that InnoEnergy’s claim to have trained more than 100,000 workers for the battery industry could not be verified against hard data. Such performance figures underpin the case for continued public support.

The timing stings. Prosecutors act just as the Commission channels billions more into clean industry, and only weeks after OLAF, the EU’s anti-fraud office, reported recommending the recovery of almost 600 million euros across 209 closed cases in 2025. Guardians of the EU budget are busier than ever.

InnoEnergy does not stand alone in the spotlight. The EPPO recently searched premises in Germany over suspected subsidy fraud tied to the bloc’s migration fund and secured asset seizures in Italy linked to recovery-fund money. Each case tests whether Brussels can police the very programmes it champions.

For the clean-tech sector the reputational risk runs deep. Investors and governments pour money into the green transition on the assumption that intermediaries spend it cleanly. A confirmed case against a marquee name would hand ammunition to critics who already question how Brussels tracks its climate billions.

The office has not filed charges, and an investigation implies suspicion rather than guilt. InnoEnergy will have its chance to answer. Yet the probe alone signals that flagship status offers no shield when EU money goes missing. The EPPO sets out its remit on its official site.