Invest in deeptech for a sustainable future

Nucleation is pioneering a sustainable future by enabling you to invest in emerging next-generation nuclear energy and deep decarbonization ventures

Discover why our client portal and tech-enabled subscription structure makes participation in venture capital more accessible and affordable for all accredited investors, high net worth individuals, family offices and institutions.

Nucleation Capital is a unique climate-focused venture fund investing in innovative early-stage companies working in advanced nuclear and carbon removal, enabling the transition to a low-carbon economy.

A LOW-carbon economy?


The world needs clean energy solutions to power our planet without worsening our climate, even with growing demand. We need to prevent new CO2 emissions while also drawing down on existing emissions in order to restore a safe climate for ourselves and future generations.

Why Advanced Nuclear?


Small modular reactors will come in a range of sizes and styles and be critical components of global carbon-free energy systems helping energy buyers improve grid performance without compromising on environmental impact.

A BRighter Future is Possible

We can eliminate CO2 emissions even while meeting growing energy demand. Next-generation nuclear enables the world to thrive by ending fossil fuel reliance and decoupling economic activity from emissions, restoring the climate.

Meet the team


Valerie Gardner is a seasoned entrepreneur and investor with a background in technology, start-ups and finance. She has co-founded and/or led four ventures, including Willow Peripherals and WebTV Networks (acquired by Microsoft), tech ventures for which she served as CFO and General Counsel; and Tiemann Investment Advisors (TIA), an investment firm with $300M in AUM, and Nucleation Capital. Valerie holds an MBA from Yale University and a JD from Northeastern University. Concerned about climate, she spent decades researching sustainability. Her realization that nuclear energy was pivotal for reducing reliance on fossil fuels, led her to create TIA’s “Future Generation” portfolio, the Climate Coalition and Nucleation Capital.


Rod Adams is a distinguished nuclear expert and visionary with a comprehensive multidecadal career in the atomic energy sector. Earning both a bachelors degree in English from the United States Naval Academy (USNA) and a masters in Systems Technology from the U.S. Naval Postgraduate School, Rod’s passion for nuclear power was built upon his experience through 11 naval deployments as a Navy nuclear submarine engineer, from which he retired as a Commander. Rod was a pioneer in advanced nuclear, having launched Adams Atomic Engines in 1993. His experience and questioning mindset have played a role in reshaping how the nuclear industry views its future.

We are investing in


Ventures developing state-of-the-art reactors for grid and off-grid electricity generation and industrial heat applications, related supply chain including advanced fuels and materials, manufacturing and robotics, AI and other software control systems, waste storage, waste treatment, deployment, and training ventures.


Ventures providing carbon capture, utilization and sequestration in commercial products, such as synthetic fuels, chemicals or recombinations of energy or chemistry designed to accelerate decarbonization, including through climate services that aid the transition to carbon neutrality.


Ventures which accelerate smarter grids and advanced grid integrations enabling these critical systems to better manage and balance growing demand, distributed generation, energy storage, demand pricing and energy routing.



SEC Accreditation Requirements
Nucleation Rolling Fund Summary
Nucleation Fund Presentation
Nucleation’s Investment Portfolio
Nucleation’s Two Year Report
Nucleation Syndicate Summary
Nucleation Subscriber Portal
Investor Interest Form


Nuclear Advocates & Allies (Nucleation’s List)


Contact Us (General Inquiries)
Investor Inquiries (Learn more about our fund)
Introduce Your Venture (If you fit our thesis)


Rod Adams on Nuclear Economics
Bill Gates Supports Advanced Nuclear
Elon Musk on Shutting Nuclear Down
Secretary Granholm Supports Nuclear
Dr. James Hansen on Need for Nuclear