NuCube Energy raises $13 million to advance its high-temperature microreactor amidst rising power demand, led by Arizona Nuclear Ventures.
Amount Raised
$13 Million
Round Type
Funding Round
Idaho FallsManufacturingEnergyRenewable EnergyInvestors
Description
NuCube Energy, a microreactor startup, has secured $13 million in funding to address surging electricity demand driven by AI and industrial reshoring. The company is developing a high-temperature modular microreactor for industrial heat and reliable power. This funding will support critical validation tests and regulatory engagement. NuCube's focus is on creating a safe, efficient, and economically viable reactor platform.
Quick answer
NuCube Energy raised $13 Million in a Funding Round round, dated February 19, 2026. Investors: Rob Walton, Jordan Rose Walton, Emission Reduction Corporation and Arizona Nuclear Ventures. NuCube Energy is based in Idaho Falls, Idaho, United States.
- How much did NuCube Energy raise?
- NuCube Energy raised $13 Million in a Funding Round round on February 19, 2026.
- Who invested in NuCube Energy?
- Rob Walton, Jordan Rose Walton, Emission Reduction Corporation and Arizona Nuclear Ventures are named as investors in this round.
- What does NuCube Energy do?
- NuCube Energy is a startup co-founded in 2023 by Bill Gross and Dr. Cristian Rabiti, focused on developing a high-temperature modular microreactor that provides both electricity and industrial heat.
- Where is NuCube Energy based and how big is it?
- NuCube Energy is based in Idaho Falls, Idaho, United States. Fundz records about 2 employees.
Source: Fundz verified event record.
Who else raised in Energy and Renewable Energy around the same time
Companies in the same sectors as NuCube Energy that raised within 45 days of this round, from Fundz verified event records.
- Capstone Energy Plus, Inc. raised $113M (Corporate Round) on March 30, 2026.
- pH7 Technologies raised $3.2M (Grant) on March 24, 2026.
- AmpliSi raised $2.7M (Pre-Seed) on March 17, 2026.
- RIFT raised $97M (Series B) on March 3, 2026.
- Birchtech raised $13M (Post-IPO Equity) on February 27, 2026.
- SHINE raised $240M (Funding Round) on February 26, 2026.
Who to call at NuCube Energy, and when
A new round usually means NuCube Energy is about to hire and buy. The teams that reach out first get the meeting.
- An alert the day NuCube Energy raises, hires an executive or expands, scored against what you sell
- The decision-makers there, with verified emails
- Who you already know at NuCube Energy, from your own LinkedIn network
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NuCube Energy raised. Fundz records a round at a median of 3.6 minutes from the SEC filing, with the decision-maker attached.
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