TerraPower Signs Hyundai as EPC for Eight Natrium Reactors
TerraPower said it selected Hyundai Engineering and Construction as EPC for up to eight 345 MW Natrium reactor and energy storage plants, with Meta funding and initial deliveries as early as 2032. TerraPower also signed a term sheet with SK Innovation to pursue Korea’s first commercial Natrium plant. Separately, the DOE plans to award X-energy $1B for four 80 MW HTGRs at Dow’s Texas site.
How this was made

The 30-second read
Why it matters
For Meta, the key is a long-dated power-supply and storage arrangement tied to data-center expansion. For X-energy, the key is incremental DOE cost-share funding for a specific HTGR build site.
Market read
Fresh contract and funding disclosures can move nuclear-adjacent sentiment, but Meta’s impact is longer-dated while X-energy’s DOE increment is more immediate.
What to watch
The article does not quantify Meta’s net capex, the EPC contract economics, or the probability of hitting 2032 delivery, which are key drivers for valuation and risk pricing.
Background
The piece bundles multiple nuclear-related corporate and government updates, with the main focus on TerraPower’s Natrium deployment and a separate DOE funding increment for X-energy.
Ticker impact
TerraPower says Meta will fund up to eight 345 MW Natrium plants, with initial units as early as 2032 and power rights for additional units.
Likely modest, sentiment-supportive read-through for Meta tied to AI/data-center power security; not a near-term earnings catalyst.
The article discloses a large multi-unit nuclear deployment framework and Meta funding role, but provides no financial terms, capex impact, or immediate earnings effect.
DOE awarded X-energy an additional $1 billion under ARDP to build four 80 MW HTGRs at Dow’s Texas site, lifting available federal funding to as much as $2.15 billion.
Potentially positive near-term reaction for XE on funding clarity, though magnitude depends on total project economics and matching private capital.
The article states a fresh, attributable DOE funding increment and updated total federal funding available, which is a concrete catalyst for the issuer.
Market effects
Supports the advanced nuclear commercialization narrative (Natrium and HTGR) and may improve perceived bankability via EPC guarantees and federal cost-share.
U.S. data-center power demand narrative strengthens, with Louisiana gas-to-power and Texas nuclear demonstration both highlighted.
Korea collaboration angle (Natrium term sheet with SK Innovation) reinforces cross-border nuclear deployment momentum.
Counterpoint
These are framework/term-sheet style announcements with no final investment decision, so near-term equity impact may fade once investors focus on permitting, supply chain, and cost overruns.
Key entities
- companyTerraPower
Announced Hyundai as EPC for up to eight 345 MW Natrium reactors and a term sheet with SK Innovation for Korea’s first commercial Natrium plant.
- companyHyundai Engineering & Construction (HDEC)
Selected as EPC contractor for build up to eight future Natrium reactors with completion, price, and performance guarantees.
- companyMeta
Agreed to provide funding for Natrium deployments to support carbon-free baseload power for data centers.
- companyX-energy
Received an additional $1 billion DOE award under ARDP for four 80 MW HTGRs at Dow’s Texas site.
- governmentU.S. Department of Energy (DOE)
Awarded incremental ARDP funding to X-energy as part of a 50/50 cost-share structure.



