Kairos Power locked down a transformational deal with Samsung C&T, the engineering and construction arm of Samsung Group, to develop its first 50-megawatt nuclear power plant. The partnership carries an initial commitment of up to $100 million, positioning Samsung as both financial backer and construction partner for the modular reactor project.
The reactor will supply power to Google data centers, extending Kairos Power's relationship with the tech giant. Google has become the anchor customer for Kairos Power's molten salt reactor technology, which operates at higher temperatures than conventional nuclear plants while requiring less water for cooling. This addresses a chronic pain point for hyperscalers: energy-intensive AI infrastructure demands that strain regional power grids.
Kairos Power, founded in 2016 by ex-Oak Ridge National Laboratory engineers, designs and builds fluoride-salt-cooled, high-temperature reactors. The company raised a $140 million Series B in 2022 led by Breakthrough Energy Ventures and Energy Impact Partners, valuing it at over $1 billion. Samsung's investment represents a vote of confidence from one of the world's largest industrial conglomerates, signaling that modular nuclear has crossed from scientific curiosity into commercial construction phase.
The 50-megawatt facility marks Kairos Power's transition from engineering and permitting to actual hardware deployment. Construction timelines remain tight. Kairos Power targets the early 2030s for its first full commercial reactors, though pilot projects may accelerate that window. Samsung C&T's involvement suggests the company believes the technology is ready for scale, not theoretical optimization.
Google's nuclear bet reflects intensifying competition for reliable, zero-carbon baseload power among cloud providers. Microsoft signed a deal to revive Three Mile Island Unit 1, while Amazon invested in small modular reactor (SMR) developer X-energy. These aren't one-off experiments. Hyperscalers are committing billions to nuclear because renewable energy alone cannot sustain 24/7 data center operations at the computational scale required by generative AI training and inference.
Kairos Power competes directly with Commonwealth Fusion Systems, which secured $275 million from backers including Google, and Terraform Industries, which recently raised $80 million. The SMR market remains crowded, but differentiation matters. Kairos Power's molten salt design avoids pressurized water, theoretically improving safety and reducing capital costs per megawatt. However, the technology remains unproven at commercial scale, and regulatory approvals from the Nuclear Regulatory Commission remain unpredictable.
Samsung C&T's construction expertise becomes critical here. The company manages massive infrastructure projects across Asia and the Middle East. Bringing Samsung into the partnership reduces execution risk that has plagued nuclear projects for decades. Construction delays and cost overruns in the nuclear space are endemic, but Samsung's operational discipline in industrial construction could reset expectations.
The $100 million initial tranche covers pre-construction engineering, site preparation, and manufacturing ramp. Samsung C&T will handle construction management and supply chain logistics. Kairos Power retains technology control and licensing.
This deal validates the thesis that enterprise AI power demands will create a new market for distributed, smaller nuclear plants sited near data centers. It also signals that major industrial conglomerates see SMRs as inevitable and are positioning themselves as construction and operations partners rather than dismissing the sector as uneconomical.