# Voltheia funding: rounds and investors

> Voltheia has raised $5.4M across 1 round since 2026. Every round with its source.

Source: https://millionrounds.com/company/voltheia (Millionrounds; every figure on the page links to its filing or article)

France · [Seed startup](https://millionrounds.com/companies)

# Who invested in *Voltheia*

One round we have observed, with the 0 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Energy

Raised 3 months ago

Funding summary Updated 26 Oct 2026

**$5.4M** raised across 1 round since 2026, from 1 source

- **Latest round:** Seed, $5.4M Aug 2026
- **Investors:** 0

See who backed them

## The rounds

- **Aug 2026** Seed **$5.4M** No investor was named in the report. Source recorded

## Also claim to have backed them

This firm lists Voltheia as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.

[Buckthorn Partners LLP](https://millionrounds.com/fund/buckthorn-partners-llp) Private equity Per its own site

## Quick answers about Voltheia

### How much has Voltheia raised?

Voltheia has raised $5.4M across 1 round since 2026.

### When did Voltheia last raise?

Voltheia's most recent round was a Seed of $5.4M in Aug 2026.

### What was Voltheia's biggest round?

Its most recent round, $5.4M in Aug 2026, is also its largest on record.

### What stage is Voltheia at?

Voltheia's latest named round is a Seed, in Aug 2026.

### Where is Voltheia based?

Voltheia is based in France.

## Companies like Voltheia

In the same sector, and raised in the last eighteen months.

[**Elax Energy** $34M · Oct 2026](https://millionrounds.com/company/elax-energy)[**EPYR** $20M · Oct 2026](https://millionrounds.com/company/epyr)[**HyLight** $18M · Oct 2026](https://millionrounds.com/company/hylight)[**Technip Energies** $1.4B · Jun 2026](https://millionrounds.com/company/technip-energies)[**Mantle8** $38M · May 2026](https://millionrounds.com/company/mantle8)[**Otrera** $20M · May 2026](https://millionrounds.com/company/otrera)

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