Overview

Nuclearn builds secure, on-premise-ready AI software for nuclear professionals — automating operations, engineering, and regulatory workflows. Founded in 2021 by industry veterans including CEO Bradley Fox (ex-Palo Verde), the Phoenix-area company raised a $10.5M Series A in September 2025 led by Blue Bear Capital with SJF Ventures and existing investors AZ-VC and Nucleation Capital, bringing total funding to roughly $13M. The platform serves 70+ nuclear facilities in North America and the U.K. per company materials.

Why Nuclearn is interesting

Scottsdale/Phoenix nuclear-grade AI — $10.5M Series A (Sep 2025) led by Blue Bear Capital with AZ-VC (now Copper Sky Capital) re-upping; domain-specific models for an industry that cannot tolerate generic ChatGPT wrappers.

Product & use cases

Nuclear-domain AI including AtomAssist — private foundation models for operations, engineering, and compliance workflows.

• Nuclear plant operations documentation and search
• Regulatory compliance automation
• Engineering workflow modernization

Key facts

• Phoenix/Scottsdale HQ — nuclear-specific AI platform
• Series A (Sep 2025): $10.5M led by Blue Bear Capital; ~$13M total
• AZ-VC / Copper Sky Capital seed and follow-on participant
• 70+ nuclear facilities on platform (company claim)

Fundraising history

Investors in our directory

Funds linked from Nuclearn's profile — open a fund page for stage focus and related deal articles.

Competitive landscape

Edge: Nuclear-trained private models with on-prem/Azure Government deployment — safety and compliance bar generic LLMs cannot meet.

• Generic enterprise AI vendors adjacent

  Lack nuclear regulatory training data and deployment modes.

• Legacy nuclear software vendors incumbent

  Slow UX; Nuclearn pitches AI layer on workflows.

Industries

Related funding articles

Venture Capital Tracker pieces that cover Nuclearn's financing or category context.

• Phoenix Startups and VC Firms in 2026: Copper Sky, Basata, Nx, Nuclearn