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Alameda, CA, USA · Private · kairospower.com
Fluoride-salt-cooled high-temperature reactor; Google power agreement
Capital raised (disclosed)
$643M disclosed ($368M private incl. $70M Samsung C&T; $275M DOE)
as of Nov 2026 · bloomberg.com
Open roles
70
▲ 8 since 2026-10-30
Federal awards
$3.8M
3 grants, contracts, loans
Last private raise
—
no Form D on file
SEC filings
—
not an SEC filer
Coming up
POLICY45X: advanced manufacturing
Wind components end after 2027. Solar and battery components: 75% in 2030, 50% in 2031, 25% in 2032, none from 2033. Critical minerals: 75% in 2031, 50% in 2032, 25% in 2033, none from 2034. Affects Lithium.
+ THESISPOLICYRussian uranium import ban: waiver period
DOE can grant waivers for Russian enriched uranium until Jan 1, 2028; after that the ban is absolute. Affects Fission.
+ THESISHIRING70 open roles (+8 since Oct 30, 2026)
Biggest teams: Other 28, Fuels 5, Manufacturing 5, Intern Program 5.
+ THESISPOLICYDOE Energy Dominance Financing: Constellation and Alliant
Up to $5B conditional loan to Constellation for nuclear uprates (~1.1 GW) and a closed $5.1B loan to Alliant for gas, storage and upgrades (~2.6 GW). The office (formerly the Loan Programs Office) has over $300B of authority. Affects Fission.
+ THESISPOLICYDOE adds helium to the Critical Material List
DOE added helium to its Critical Material List, citing semiconductors, natural-gas leak testing and quantum computing. Helium also cools fusion magnets and high-temperature gas reactors. Affects Fission.
+ THESISFUNDINGKairos Power lines up $643M for Hermes demonstration reactor construction
Bloomberg reported $643M in private and government funding for the Tennessee demonstration reactor, comprising $368M from backers including GV and DCVC and $275M in US Department of Energy financing. The private portion includes $70M from Samsung C&T under the partnership announced in September.
bloomberg.com →+ THESISPOLICYDOE Energy Dominance Financing: 10 large reactors
Up to $17.5B in conditional loans for ten Westinghouse AP1000 reactors at five sites; partners must commit $1B equity per project. Utility selections expected in the second half of 2026. Affects Fission.
+ THESISPOLICYForeign-entity (FEOC) supply-chain rules for tax credits
Notice 2026-15 explains how to calculate the material-assistance cost ratio and gives interim safe harbors for 45Y, 48E and 45X. Proposed regulations and safe-harbor tables are still to come. Affects Lithium.
+ THESISHow it works
The core sits in a pool of liquid metal or molten salt that carries heat away at normal pressure. Some designs store that heat in molten-salt tanks so the plant can boost output when the grid needs it.
OPEN IN 3D →ProofBuilding Hermes (non-power) and broke ground on Hermes 2, its first power-producing reactorApr 17, 2026yahoo.com
NextHermes operation, then Hermes 2 (2030)
Supply-chain security
Secured · Contracted · At risk · Unknown — rated only on public evidence; Unknown means nothing has been disclosed.
Sources: company job boards (daily), SEC EDGAR, USAspending.gov, and the reviewed technology spreadsheets. Public records only cover US entities, so foreign companies and private firms that don't file will show gaps.
Public $303MPrivate $0
Money behind this company's projects. Company-wide raises are listed but not counted in totals.
No public filings, raises or hiring trend to read yet.
Read from SEC 8-Ks (bankruptcy, default, delisting, restatement, impairment, restructuring), cash runway in annual reports, Form D raises and the 30-day hiring trend. A prompt to look closer, not a credit rating.
2026-10-302026-11-09
Teams moving over 30 days: Supply Chain and Procurement +3 (now 3), Pebble Handling and Storage System +3 (now 3), Environmental Health & Safety -3 (now 0)
By team
By location
Matched recipient: KAIROS POWER LLC
STEP 4/6 · AT RISK HALEU is the bottleneckMost advanced designs need HALEU (5–20% enriched), with no commercial US supply at scale yet.
STEP 5/6 · AT RISK Advanced reactor timelinesFuel availability becomes a gating item for first units.
STEP 4/5 · WATCH Advanced nuclear gets anchor customersBuyers fund development and commit to output from first units.
STEP 4/4 · WATCH Office relaunched as Energy Dominance FinancingLending shifts toward nuclear and utility expansions (AP1000 offers, Constellation uprates).
Critical inputs
Policy that applies
2026-11-05 · Value updated
$643M disclosed ($368M private incl. $70M Samsung C&T; $275M DOE)was: Undisclosed total; $70M from Samsung C&T2026-10-14 · funding
Kairos Power lines up $643M for Hermes demonstration reactor constructionBloomberg reported $643M in private and government funding for the Tennessee demonstration reactor, comprising $368M from backers including GV and DCVC and $275M in US Department of Energy financing. The private portion includes $70M from Samsung C&T under the partnership announced in September.Not an SEC filer, or no US entity matched. Most private and foreign companies don't file.