Series B · Climate tech

Valar Atomics raises $1bn Series B led by Sequoia

The nuclear company moves from reactor demonstrations towards fleet manufacturing.

Financing the manufacturing transition

Sequoia partner Shaun Maguire joins Valar’s board with the investment. The company also announced a separate $200 million credit facility involving Erebor Bank, J.P. Morgan, Crescent Cove and Hercules Capital.

The round follows Ward 250’s June criticality milestone and a demonstration powering NVIDIA computing hardware. Valar’s next step is to turn that test programme into repeatable reactor production, with fuel manufacturing and long-term operations inside the same business.

Use of funds

Scale manufacturing of nuclear reactor fleets

Develop integrated fuel production, deployment and operations

Funding history

Series B · This round$1B

Sources

  1. Valar Atomicsprojectstartups.com
  2. Sequoia’s Shaun Maguire leads $1B round for nuclear startup Valar Atomicstechcrunch.com · Aug 3, 2026
  3. Announcing our $1B Series B Led By Sequoiavalaratomics.com · Aug 4, 2026