Oak Ridge, TN · Roane County · 35.920°N 84.390°W
Kairos Power Hermes 2
Kairos Power
Key facts
- Location
- Oak Ridge, TN, Roane County
- Capacity
- 50 MW planned
- Powered by
- —
- Announced
- —
- Last updated
Civic impact
Energy & water
- Energy source
- Nuclear
KP-FHR fluoride-salt-cooled Gen IV demonstration reactor -- the first Gen IV power reactor to receive an NRC construction permit. Two 35 MWth test reactor units revised upward to a combined 50 MWe design following the TVA/Google power purchase agreements; delivers power into the TVA grid.
Community sentiment
Groundbreaking (2026-04-17) was attended and celebrated by elected officials including Deputy Secretary of Energy James Danly and Rep. Chuck Fleischmann; no documented local opposition found in sourcing this session. Site reuses the Heritage Center/former East Tennessee Technology Park (K-25/K-33) land via the DOE/Oak Ridge EDI redevelopment program.
Kairos Power breaks ground on first power-producing reactor in Oak RidgeStatus history
- Permitted
NRC issues Hermes 2 construction permit (first Gen IV power-reactor construction permit; Docket Nos. 50-611 and 50-612)
Kairos Power LLC; Hermes 2 Test Reactor Facility; Construction Permits - Under construction
Kairos Power breaks ground on Hermes 2 at the Heritage Center/K-33 site
Kairos Power Breaks Ground on Hermes 2 Demonstration Plant
Location
Sources & data provenance
Confirmed: data verified against official filings, permits, or direct operator announcements.
Last updated:
- U.S. Nuclear Regulatory CommissionRetrieved:
- Federal RegisterRetrieved:
- Federal RegisterRetrieved:
- Federal RegisterRetrieved:
- Federal RegisterRetrieved:
- Kairos PowerRetrieved:
- Kairos PowerRetrieved:
- GoogleRetrieved:
- World Nuclear NewsRetrieved:
- ANS Nuclear NewswireRetrieved:
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