# Nucleation Capital

> Nucleation Capital is a VC fund in Menlo Park backing Nuclear and CleanTech. See 8 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: Menlo Park, United States
- Total investments: 8
- Last investment: Sep 2025
- Lead investor: 0%
- Last updated: Aug 2026
- Website: https://nucleationcapital.com

Nucleation Capital is a venture capital firm. it seeks to invest in advanced nuclear and deep decarbonization sectors.

## Contacts

5 contacts available for Nucleation Capital. Shizune tracks 1 team members at Nucleation Capital. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/nucleation-capital?utm_source=investor_profile

## Round sizes

| Stage | Round size |
| --- | --- |
| Series A | $11M–$45M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Nuclear | 4 | 50% |
| CleanTech | 2 | 25% |
| Clean Energy | 2 | 25% |
| Energy | 1 | 13% |
| Software | 1 | 13% |

8 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 3 | 38% |
| Seed | 1 | 13% |
| Series B | 1 | 13% |
| Funding Round | 1 | 13% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| Sweden | 1 | 13% |
| Denmark | 1 | 13% |
| United States | 1 | 13% |

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Valerie Gardner | Managing Partner | 2 | https://shizune.co/investors/profile/valerie-gardner-f7c0 |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Blykalla | Blykalla is a Swedish company specializing in the production of advanced small modular reactors (SMRs). Their design, built on over 25 years of research, is now being introduced to the market. By providing necessary baseload energy, Blykalla enables a complete transition to a fossil-free future. | $50M |  | Dec 18, 2025 |  |
| Nuclearn | Nuclearn is a software company delivering AI solutions for automating Nuclear Industry tasks.Nuclearn was established in 2020 by two esteemed veterans from the nuclear industry, Jerrold Vincent and Bradley Fox, driven by their passion for innovation. With backgrounds in nuclear engineering, business intelligence, and process improvement, theco-founders came together to create the industry's pioneering in-house data science team at the Palo Verde Nuclear Generating Station in 2016.Their remarkable work quickly gained recognition throughout the nuclear sector, resulting in a US-issued patent and the prestigious NEI Best of the Best, Top Innovative Practice Award in 2020. Fueled by this innovative spirit and a mission to benefit the entire nuclear power industry, Nuclearn was born to provide a safe and efficient way to automate critical processes in the field. | $10.5M | Series A | Sep 09, 2025 |  |
| Aalo Atomics | Aalo Atomics designs and builds small nuclear fission reactors, to sell affordable and reliable clean power and heat. | $100M | Series B | Aug 19, 2025 |  |
| Radiant | Radiant is a technology company that develops portable nuclear microreactors designed to generate electricity and heat in a compact, factory-built form. The company’s flagship product, Kaleidos, is engineered to be transportable to customer sites and to replace traditional power sources such as diesel generators for applications including backuppower and continuous energy supply. Radiant manages design, assembly, fueling, and testing of its reactors with a focus on modular deployment and energy generation without on-site water requirements. It also undertakes infrastructure planning for reactor production facilities to support broader availability of its microreactors. Radiant engages with regulatory processes and industry partners to advance testing and commercialization of its nuclear energy solutions. | $165M | Series C | Nov 14, 2024 |  |
| Blue Energy | Blue Energy is a nuclear power plant company that provides reliable, clean, and abundant electricity. | $45M | Series A | Oct 08, 2024 |  |
| Aalo Atomics | Aalo Atomics designs and builds small nuclear fission reactors, to sell affordable and reliable clean power and heat. | $27M | Series A | Aug 14, 2024 |  |
| Blykalla | Blykalla is a Swedish company specializing in the production of advanced small modular reactors (SMRs). Their design, built on over 25 years of research, is now being introduced to the market. By providing necessary baseload energy, Blykalla enables a complete transition to a fossil-free future. | $7.3M | Venture - Series Unknown | Apr 17, 2024 |  |
| Nuclearn | Nuclearn is a software company delivering AI solutions for automating Nuclear Industry tasks.Nuclearn was established in 2020 by two esteemed veterans from the nuclear industry, Jerrold Vincent and Bradley Fox, driven by their passion for innovation. With backgrounds in nuclear engineering, business intelligence, and process improvement, theco-founders came together to create the industry's pioneering in-house data science team at the Palo Verde Nuclear Generating Station in 2016.Their remarkable work quickly gained recognition throughout the nuclear sector, resulting in a US-issued patent and the prestigious NEI Best of the Best, Top Innovative Practice Award in 2020. Fueled by this innovative spirit and a mission to benefit the entire nuclear power industry, Nuclearn was born to provide a safe and efficient way to automate critical processes in the field. | $2.5M | Seed | Aug 01, 2023 |  |

8 of 8 investments shown.

## Co-investors
- [Earth Venture Capital](https://shizune.co/investors/profile/earth-venture-capital) — VC Fund, 3 deals together
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund, 2 deals together
- [Copper Sky Capital](https://shizune.co/investors/profile/az-vc) — VC Fund, 2 deals together
- [Harpoon](https://shizune.co/investors/profile/harpoon-2271) — VC Fund, 2 deals together
- [Julian Capital](https://shizune.co/investors/profile/julian-capital) — VC Fund, 2 deals together
- [Norrsken Launcher](https://shizune.co/investors/profile/norrsken-launcher) — VC Fund, 2 deals together

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## FAQ

### What does Nucleation Capital invest in?

Nucleation Capital invests primarily in Nuclear, CleanTech and Clean Energy startups, most often at Series A and Seed stage. Most of the 8 investments tracked by Shizune back companies in Sweden. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Nucleation Capital's check size?

Nucleation Capital typically joins rounds of $11M–$45M at Series A. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Nucleation Capital participates in.

### How do I contact Nucleation Capital?

Public channels for Nucleation Capital include the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### Who are the partners at Nucleation Capital?

The team at Nucleation Capital includes Valerie Gardner (Managing Partner). The Team section lists each member with their title, investment count and links.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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