# Ultrawatt funding: rounds and investors

> Ultrawatt has raised $2.2M across 1 round since 2024. Investors include Y Combinator and UI Investissement. Every round with its source.

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

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

# Who invested in *Ultrawatt*

One round we have observed, with the 2 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.

Construction

Funding summary Updated 26 Oct 2026

**$2.2M** raised across 1 round since 2024, from 1 source

- **Latest round:** Seed, $2.2M Oct 2024
- **Investors:** 2

See who backed them

## The rounds

- **Oct 2024** Seed **$2.2M** [Y Combinator](https://millionrounds.com/fund/y-combinator) [UI Investissement](https://millionrounds.com/fund/ui-investissement) Source recorded

## Everyone who backed them

[Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **1** round

[UI Investissement](https://millionrounds.com/fund/ui-investissement) Private equity **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=ultrawatt).

## Quick answers about Ultrawatt

### Who invested in Ultrawatt?

Ultrawatt's investors include Y Combinator and UI Investissement.

### How much has Ultrawatt raised?

Ultrawatt has raised $2.2M across 1 round since 2024.

### When did Ultrawatt last raise?

Ultrawatt's most recent round was a Seed of $2.2M in Oct 2024.

### What was Ultrawatt's biggest round?

Its most recent round, $2.2M in Oct 2024, is also its largest on record.

### Who backed Ultrawatt first?

Ultrawatt's first round on record, in Oct 2024, was backed by Y Combinator and UI Investissement.

### What stage is Ultrawatt at?

Ultrawatt's latest named round is a Seed, in Oct 2024.

### Where is Ultrawatt based?

Ultrawatt is based in France.

## Companies like Ultrawatt

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

[**HyLight** $18M · Oct 2026](https://millionrounds.com/company/hylight)[**Mistral AI** $7.5B · Sept 2026](https://millionrounds.com/company/mistral-ai)[**Graneet** $17M · Sept 2026](https://millionrounds.com/company/graneet)[**OpsMill** $14M · May 2026](https://millionrounds.com/company/opsmill)[**Davis AI** $5.5M · May 2026](https://millionrounds.com/company/davis-ai)[**Decade Energy** $26M · Apr 2026](https://millionrounds.com/company/decade-energy)

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