# Newcleo: Energy, Paris, United Kingdom

> Newcleo: Newcleo is an atomic energy company that focuses on developing advanced nuclear energy technologies. Based in Paris, United Kingdom. Founded 2021.

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

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

# Newcleo

Newcleo is an atomic energy company that focuses on developing advanced nuclear energy technologies.

Funding reported Last round: Undisclosed round

Energy Paris, United Kingdom

Company summary

- **Founded:** 2021 5 years old
- **Team:** 501 201 to 1,000 people
- **Funding reported:** 526.8M as listed, currency not stated
- **Last round:** Undisclosed round May 2024

How sure we are

- ✓ **Listed** We know it exists and what it does
- 2 **Funding reported** A company dataset reports a raise
- 3 **Observed** A filing or a dated announcement confirms a round

No round for Newcleo has been confirmed by a filing or an announcement yet, so nothing here counts toward an investor's record. [How we decide](https://millionrounds.com/methodology)

## What company datasets say Newcleo raised

Funding, as reported

Reported in all **526.8M** in the source's currency

Rounds **3**

Last round **Undisclosed round**

Last round date **May 2024**

Investors listed **5**

## Funding filed with regulators

Newcleo filed 12 raises, $1.1B in all. Filings say how much was sold and to how many investors; they never name the investors.

- Sept 2026 **$377M** UK share allotment
- Jul 2026 **$217K** UK share allotment
- Jun 2026 **$555K** UK share allotment
- Apr 2026 **$18M** UK share allotment
- Jan 2026 **$58M** UK share allotment
- Dec 2025 **$38M** UK share allotment
- Oct 2024 **$53M** UK share allotment
- May 2024 **$94M** UK share allotment
- Jun 2022 **$315M** UK share allotment
- Oct 2021 **$110M** UK share allotment
- May 2021 **$135K** UK share allotment
- Apr 2021 **$133K** UK share allotment

## On 4 portfolio pages

Investors who name them

- [3LB Seed Capital](https://millionrounds.com/fund/3lb-seed-capital)
- [NovaCapital](https://millionrounds.com/fund/novacapital)
- [Pi Campus](https://millionrounds.com/fund/pi-campus)
- [Feel Venture](https://millionrounds.com/fund/feel-venture)

Each firm lists Newcleo on its own website. That is the firm's claim, a weaker thing than a round we watched, but a named source.

## Energy in United Kingdom

Startups like it

- [**Renewable Power Capital** London · founded 2020](https://millionrounds.com/startup/renewable-power-capital)
- [**Rolls-Royce SMR** Derby · founded 2021](https://millionrounds.com/startup/rolls-royce-smr)
- [**Lightsource Renewable Energy** London · founded 2010](https://millionrounds.com/startup/lightsource-renewable-energy)
- [**British Solar Renewables** Shepton Mallet · founded 2010](https://millionrounds.com/startup/british-solar-renewables)
- [**Siccar Point Energy** founded 2014](https://millionrounds.com/startup/siccar-point-energy)
- [**Harbour Energy** Aberdeen · founded 2014](https://millionrounds.com/startup/harbour-energy)
- [**Cero Generation** London · founded 2021](https://millionrounds.com/startup/cero-generation)
- [**Constantine Energy Storage** Godalming · founded 2021](https://millionrounds.com/startup/constantine-energy-storage)

## Is this your company?

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