Energy & Utilities
X-energy
A small modular reactor developer building the Xe-100 SMR and TRISO-X fuel fabrication facility in Oak Ridge, Tennessee, backed by Amazon's Climate Pledge Fund. X-energy closed an upsized $700 million Series C-1 round anchored by Amazon with participation from Segra Capital Management, Jane Street, Ares Management and Emerson Collective, bringing its total capital raised over 13 months to roughly $1.4 billion, and separately launched an IPO roadshow seeking up to $814 million; X-energy and Amazon aim to bring more than 5 gigawatts of SMR capacity online in the US by 2039, the largest commercial SMR deployment target to date.
Sources
Every claim traced to a primary source — evidence, recent activity, and insider filing behavior, all in one place.
Evidence
1 source · 58% avg. source confidence
- DatacenterDynamics / Neutron Bytes — X-energy closes upsized $700M Series C-1, launches IPO roadshow58% source confidence
Dependency Map
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The Story So Far
Auto-generated from this entity's dated milestones, relationship updates, and sourced evidence — not AI-written, just sorted.
X-energy's Timeline
A sourced, dated history of X-energy's key moments — founding to present.
Jan 2009 · Founded
X-energy was founded to develop small modular reactor technology and TRISO fuel fabrication.
Oct 2024 · Amazon invests via Climate Pledge Fund
Amazon invested in X-energy through its Climate Pledge Fund to support advanced small modular nuclear reactors and expand carbon-free power, part of a plan to bring more than 5 gigawatts of SMR capacity online in the US by 2039.
Jan 2026 · Closes upsized $700M Series C-1, launches IPO roadshow
X-energy closed an upsized $700 million Series C-1 round anchored by Amazon's Climate Pledge Fund with participation from Segra Capital Management, Jane Street, Ares Management and Emerson Collective, bringing total capital raised over 13 months to roughly $1.4 billion; the company separately launched an IPO roadshow seeking up to $814 million.