# Zephyr Power funding: rounds and investors

> Zephyr Power has raised $21M across 1 round since 2017. Investors include British International Investment. Every round with its source.

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

[Funded startup](https://millionrounds.com/companies)

# Who invested in *Zephyr Power*

One round we have observed, with the one investor 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

**$21M** raised across 1 round since 2017, from 1 source

- **Latest round:** Debt, $21M Apr 2017
- **Investors:** 1

See who backed them

## The rounds

- **Apr 2017** Debt **$21M** [British International Investment](https://millionrounds.com/fund/british-international-investment-bii) Source recorded

## Everyone who backed them

[British International Investment](https://millionrounds.com/fund/british-international-investment-bii) Government **1** round

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

## Quick answers about Zephyr Power

### Who invested in Zephyr Power?

Zephyr Power's investors include British International Investment.

### How much has Zephyr Power raised?

Zephyr Power has raised $21M across 1 round since 2017.

### When did Zephyr Power last raise?

Zephyr Power's most recent round was a Debt of $21M in Apr 2017.

### What was Zephyr Power's biggest round?

Its most recent round, $21M in Apr 2017, is also its largest on record.

### Who backed Zephyr Power first?

Zephyr Power's first round on record, in Apr 2017, was backed by British International Investment.

### What stage is Zephyr Power at?

Zephyr Power's latest named round is a Debt, in Apr 2017.

## Companies like Zephyr Power

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

[**os.energy** $1.2M · Aug 2026](https://millionrounds.com/company/os-energy)[**CleanMax** $165M · Feb 2026](https://millionrounds.com/company/cleanmax)[**Radiance Renewables** $100M · Feb 2026](https://millionrounds.com/company/radiance-renewables)[**Turno** $4.7M · Feb 2026](https://millionrounds.com/company/turno)[**e-TRNL Energy** $3.0M · Feb 2026](https://millionrounds.com/company/e-trnl-energy)[**PolyCycl** $2.9M · Jan 2026](https://millionrounds.com/company/polycycl)

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