# Protium Green Solutions funding: rounds and investors

> Protium Green Solutions has raised $51M across 1 round since 2022. Investors include Barclays Ventures and Swen Capital Partners. Every round with its source.

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

United Kingdom · [Venture startup](https://millionrounds.com/companies)

# Who invested in *Protium Green Solutions*

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.

Energy

Funding summary Updated 26 Oct 2026

**$51M** raised across 1 round since 2022, from 1 source

- **Latest round:** Venture, $51M Jun 2022
- **Investors:** 2

See who backed them

## The rounds

- **Jun 2022** Venture **$51M** [Barclays Ventures](https://millionrounds.com/fund/barclays-ventures) [Swen Capital Partners](https://millionrounds.com/fund/swen-capital-partners) Source recorded

## Everyone who backed them

[Barclays Ventures](https://millionrounds.com/fund/barclays-ventures) Corporate VC **1** round

[Swen Capital Partners](https://millionrounds.com/fund/swen-capital-partners) Asset manager **1** round

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

## Quick answers about Protium Green Solutions

### Who invested in Protium Green Solutions?

Protium Green Solutions's investors include Barclays Ventures and Swen Capital Partners.

### How much has Protium Green Solutions raised?

Protium Green Solutions has raised $51M across 1 round since 2022.

### When did Protium Green Solutions last raise?

Protium Green Solutions's most recent round was a Venture of $51M in Jun 2022.

### What was Protium Green Solutions's biggest round?

Its most recent round, $51M in Jun 2022, is also its largest on record.

### Who backed Protium Green Solutions first?

Protium Green Solutions's first round on record, in Jun 2022, was backed by Barclays Ventures and Swen Capital Partners.

### What stage is Protium Green Solutions at?

Protium Green Solutions's latest named round is a Venture, in Jun 2022.

### Where is Protium Green Solutions based?

Protium Green Solutions is based in the United Kingdom.

## Companies like Protium Green Solutions

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

[**novosound** $8.7M · Sept 2026](https://millionrounds.com/company/novosound)[**Metris Energy** $7.5M · Sept 2026](https://millionrounds.com/company/metris-energy)[**AcouBatt** $3.0M · Sept 2026](https://millionrounds.com/company/acoubatt)[**SolarSub** $1.8M · Sept 2026](https://millionrounds.com/company/solarsub)[**Nyobolt** $155M · Aug 2026](https://millionrounds.com/company/nyobolt)[**Breathe Battery Technologies** $132M · Aug 2026](https://millionrounds.com/company/breathe-battery-technologies)

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