Exclusive: Holyvolt raises at €182m valuation for batteries that can be printed on almost anything
5 feb. 2026
12:48
Secretive Swedish startup Holyvolt, which Impact Loop first uncovered in late-2024, has raised more funding at a substantial valuation.
A recent patent filing we've examined also publicly reveals the company's technology in detail for the first time.
Yet, much of the mystery around Holyvolt prevails. Rumours are circling that the company has links to Donut Labs, the much-hyped Finnish startup that claims to have invented the world's first production-ready solid state battery.
A recent patent filing we've examined also publicly reveals the company's technology in detail for the first time.
Yet, much of the mystery around Holyvolt prevails. Rumours are circling that the company has links to Donut Labs, the much-hyped Finnish startup that claims to have invented the world's first production-ready solid state battery.
Swedish energy startup Holyvolt has raised €12m at a €182m valuation, Impact Loop can exclusively reveal, just months after filing a patent for screen-printed solid-state batteries that the company claims can be applied to almost any surface.
Impact Loop first lifted the lid on the company – which operates a lab in Munich, Germany – in late 2024 when Holyvolt raised €9.4m despite still being in stealth mode.