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Deep Fission · Great Plains Industrial Park, Parsons, KS · KansasDEVELOPER HEALTHSTRESS
Borehole reactor placed about a mile underground, under DOE's Reactor Pilot Program. Missed the July 2026 criticality goal; two of five DOE authorization steps done by Aug 2026.
Power
15 MW
Fission · Research and prototype
Storage
—
energy capacity
Online
—
not announced
Capital committed
—
closed or awarded
Capital pending
—
conditional or under review
How it works
Today's fleet and most near-term SMRs. Uranium fuel heats ordinary water under high pressure; the steam spins a turbine and the water is cooled and pumped back.
OPEN IN 3D →No project-level financing disclosed yet.
Grid connection, permits, contractors and cost not researched yet for this project.
Great Plains Development Authority
Master energy purchase agreement (Oct 2026) for a planned commercial project: 150 MW target in 2028, later phases up to 2,000 MW
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 4/4 · WATCH Office relaunched as Energy Dominance FinancingLending shifts toward nuclear and utility expansions (AP1000 offers, Constellation uprates).
Critical inputs
Policy that applies