Type One Energy
Pre-revenue deep-tech developer; plans to license stellarator plant technology to utilities and operators rather than own/operate plants; near-term funding from venture capital, DOE milestone-program awards, and state/utility cost-share
Type One has never disclosed a closed priced-round valuation. The only public valuation mark is the $900M pre-money Series B target reported by TechCrunch (Jan 2026), carried forward while the round remains open. Seed-era points show cumulative capital raised as a conservative floor, not a market valuation.
Earnings, margins, COGS & capex
Type One Energy is a private, pre-revenue fusion developer. It raised a $29M seed (2023) extended to $82.5M (2024) and an $87M convertible note (Jan 2026) bridging to a targeted $250M Series B at a $900M pre-money valuation (TechCrunch, Jan 2026); the Series B was still in progress per TechCrunch's Jun 19, 2026 roundup, which lists $269M total raised. It is one of eight companies selected for the DOE Milestone-Based Fusion Development Program (2023). No revenue, margin, or burn figures are disclosed. Its licensing model is designed to keep plant capex off its own balance sheet - Infinity Two funding decisions rest with TVA board approval and least-cost planning.
Revenue trend
Margins
Burn increasing as Infinity One engineering ramps
COGS structure
No product COGS yet. Future licensing model implies software/IP-like economics for Type One itself, while hardware cost (HTS magnets, vacuum vessel, balance of plant) sits with plant owners; HTS (REBCO) tape supply is the dominant future input cost across magnetic-confinement fusion.
Capex
Company-level capex concentrated in the Infinity One engineering verification platform at TVA's Bull Run Energy Complex in Clinton, TN (commissioning and startup scheduled 2029, per Jan 2026 Business Wire release) and magnet/manufacturing development, with TVA Power Service Shops (Muscle Shoals, AL) supporting modular manufacturing; the 350 MWe Infinity Two pilot plant would be financed with TVA and partners, subject to TVA board approval.
Latest earnings
No financial guidance (private). Operational milestones: close ~$250M Series B (in progress as of Jun 2026), Infinity One commissioning 2029, Infinity Two online mid-2030s
- Total raised (TechCrunch roundup, Jun 2026)
- $269M (>$160M venture through Jan 2026)
- Series B target / pre-money
- $250M at $900M pre-money (Jan 2026; still in progress mid-2026)
- Infinity Two nameplate
- 350 MWe (800 MW fusion power, D-T stellarator)
- Infinity One commissioning target
- 2029
- Founded / HQ
- 2019 / Knoxville, TN (founded by UW-Madison HSX stellarator team)
Growth drivers
- TVA cooperative agreement (Sep 2025) to jointly develop plans for the 350 MWe Infinity Two fusion pilot plant, targeting mid-2030s operation, expanding Project Infinity (launched 2024 with TVA, ORNL, and the State of Tennessee)
- Infinity One prototype — engineering verification stellarator with non-planar HTS magnets at Bull Run, 2029 commissioning target
- First-of-kind Tennessee fusion licensing — initial byproduct-material license application submitted with TVA and TDEC (Jan 29, 2026)
- DOE Milestone-Based Fusion Development Program membership (one of eight 2023 awardees; milestone payments + credibility)
- Peer-reviewed physics design basis — seven papers in a Journal of Plasma Physics special issue (Mar 2025), simulated with DOE exascale computing resources including ORNL systems
- Surging baseload demand from data centers/AI and electrification driving utility interest in firm clean power
Bull & bear
If stellarators are the right answer for practical baseload fusion - steady-state, no disruptions, no current drive - Type One is the best-positioned US company on that path, with peer-reviewed physics, a real utility, a real site, a first-in-Tennessee license application, and a capital-light licensing model that lets it monetize IP across many plants without owning them.
- Stellarator steady-state operation maps directly onto what utilities actually buy: firm, always-on capacity - TVA cites exactly this baseload rationale
- Peer-reviewed 7-paper design basis plus exascale simulation de-risks the physics more transparently than any rival's private claims
- Project Infinity stack (Infinity One 2029 -> Infinity Two 350 MWe mid-2030s) gives a staged, verifiable milestone ladder investors can underwrite
- TDEC byproduct-material license application (Jan 29, 2026) is a first-of-kind regulatory beachhead - fusion avoiding NRC fission-style licensing is a structural cost advantage
- Licensing business model scales like IP, not like EPC: success case looks closer to an ARM-of-fusion than a utility
- $900M pre-money is a fraction of CFS (multi-billion) and Helion ($15.5B, Jun 2026) marks - large re-rating headroom if Infinity One hits its 2029 milestone
Type One is a pre-revenue science project with a sub-scale war chest attacking the hardest-to-build fusion architecture, whose first revenue-bearing plant needs a utility board approval it does not control and is a decade away under optimistic assumptions.
- Stellarator engineering complexity (non-planar HTS coils, millimeter tolerances at 10+ meter scale) has never been solved at commercial scale; W7-X took roughly two decades and over EUR 1B as a government project
- $269M raised versus CFS ~$3B and Helion $1.5B - if fusion becomes a capital war, Type One is outgunned; the still-open $250M Series B is the near-term proof point
- Infinity Two is contingent on TVA board approval, regulatory review, and least-cost planning - a utility can defer indefinitely at no cost to itself
- Bridge financing via convertible note (Jan 2026) ahead of an unclosed Series B is a classic signal of a hard raise
- No fusion company has demonstrated net facility gain; any negative result from Infinity One (or from rivals) could freeze sector funding
- Licensing model produces meaningful revenue only after a first plant works - realistically no material revenue before the mid-2030s, implying multiple further dilutive rounds
What it is worth
Last-round / milestone-probability framing (no revenue to anchor multiples). Reference points: $900M pre-money Series B target (TechCrunch, Jan 2026); $269M total raised (TechCrunch, Jun 2026); CFS ~$3B raised and Helion's $15.5B private mark (Jun 2026) as sector ceiling comps. Earlier-round valuations not disclosed.
Sub-$500M down-round or strategic sale: Series B stalls, Infinity One slips past 2030, or a rival's net-gain demonstration plus SMR commercialization drains capital from second-tier fusion; General Fusion's 2025 restructuring is the template for the downside
~$0.9-1.2B (2026-2027)
Series B closes near the $900M pre-money target, Infinity One construction proceeds on schedule, TVA relationship stays conditional
$3-5B+ post-Infinity One success (2029-2030): validated stellarator magnets + a TVA definitive agreement would re-rate Type One toward leader-tier fusion marks, with licensing economics arguably deserving a premium per dollar of capital
Valuation is a venture option on (1) Infinity One working by ~2029, (2) TVA converting Infinity Two to a definitive agreement, and (3) the licensing model attaching royalty-like economics to follow-on plants. Not financial advice; private-market marks are illiquid and stale by construction.
SWOT
Strengths
- Stellarator architecture offers intrinsically steady-state, disruption-free plasma - a genuine engineering advantage over tokamaks for baseload utility operation
- Published, peer-reviewed pilot-plant physics basis (7 papers, Journal of Plasma Physics special issue, Mar 2025, led by Chris Hegna) - unusual transparency for a fusion startup
- Anchor utility partnership — TVA cooperative agreement plus a real site (Bull Run Energy Complex, Clinton, TN) with grid interconnection, water, and workforce
- Backing from Breakthrough Energy Ventures (Bill Gates-founded), TDK Ventures, Doral Energy-Tech Ventures; DOE milestone-program selection (2023); Bernard Looney (ex-BP CEO) joined the board Jun 2026
- Builds on decades of validated stellarator science (W7-X in Germany, UW-Madison HSX) rather than an unproven confinement concept
Weaknesses
- Pre-revenue with no disclosed financials; commercial power is a mid-2030s outcome at best
- Far less capitalized ($269M total per TechCrunch, Jun 2026) than leading fusion rivals - Commonwealth Fusion Systems ~$3B and Helion $1.5B raised
- Stellarators are historically harder and costlier to build than tokamaks: complex non-planar HTS magnets with extreme fabrication tolerances remain unproven at scale
- Series B ($250M) not confirmed closed as of mid-2026 - financing risk into a capital-hungry build phase
- Licensing model depends on utility partners' balance sheets and board approvals it does not control (Infinity Two is explicitly subject to TVA board approval and least-cost planning)
Opportunities
- Data-center/AI-driven baseload demand and hyperscaler willingness to sign long-dated clean-power deals (precedent: Microsoft-Helion PPA 2023, Google-CFS 200 MW offtake 2025)
- Coal-site conversion playbook (Bull Run) is repeatable across hundreds of retiring US coal plants with existing grid interconnects
- Supportive US regulatory path — NRC decided in 2023 to regulate fusion under the byproduct-materials framework (not fission reactor licensing), with Tennessee an agreement state and the TDEC application already submitted
- Federal tailwinds — DOE finalized its Fusion Science and Technology Roadmap (Jun 2026) targeting pilot plants in the mid-2030s, plus the milestone program
- First-mover position among US private stellarator programs (ahead of Thea Energy on utility siting and licensing)
Threats
- Scientific risk — no private fusion machine has yet demonstrated sustained net facility-level energy gain; stellarator alpha-particle confinement and divertor performance at reactor scale are unproven
- Competing approaches (CFS SPARC tokamak, Helion FRC) may reach commercial demonstration years earlier and lock in utility/hyperscaler capital
- HTS tape supply concentration and cost inflation across the entire magnetic-fusion sector
- Fusion timelines have historically slipped — a mid-2030s pilot could easily become late-2030s, exhausting investor patience
- Cheap firm alternatives (fission SMRs from Oklo/X-energy/NuScale, gas with CCS, storage-firmed renewables) could compress fusion's addressable premium
Moats, dependencies & bottlenecks
Moats
Stellarator design IP and optimization codebase (exascale-validated physics basis) moderate-strong Seven peer-reviewed papers publish the basis but the optimization tooling, engineering integration, and HTS coil know-how remain proprietary
Hard-to-replicate public-private stack; but agreements are conditional cooperative agreements, not binding offtake
first fusion license application in Tennessee under the byproduct-material framework Process knowledge and precedent-setting with TDEC transfers partially to followers once the pathway is established
Talent concentration in stellarator physics (UW-Madison HSX lineage, global stellarator hires) Stellarator specialists are globally scarce; Proxima Fusion (Munich, ex-Max Planck) competes for the same pool
Dependencies
anchor customer / site host Infinity Two funding, construction, and offtake all subject to TVA board approval and least-cost planning; single-customer concentration for the first plant
critical supply chain Non-planar HTS magnets are the core technology; global REBCO capacity is concentrated in a handful of producers (Faraday Factory Japan, Fujikura, Furukawa/SuperPower) and demanded by every magnetic-fusion competitor
funding + compute + materials science partner Milestone-program payments plus exascale computing and materials collaboration; exposed to federal budget and program priorities
$250M Series B still in progress as of Jun 2026; multiple further rounds required before any plant revenue
Tennessee regulators (TDEC) and evolving fusion regulatory frameworks Byproduct-material pathway (NRC 2023 decision) is favorable but first-of-kind at state level; precedent not yet fully established
Advantages
- Among the most concrete utility-partnered fusion pilots in the US: a TVA cooperative agreement, a named 350 MWe pilot plant, and a specific retired-coal site (peer to CFS-Dominion in Virginia)
- Steady-state, disruption-free stellarator physics — low plasma-physics risk profile among magnetic confinement approaches
- Published peer-reviewed design basis creates scientific credibility rivals' private claims lack
- Capital-light licensing model keeps multi-billion plant capex off its balance sheet
- Breakthrough Energy Ventures + TDK Ventures backing, DOE milestone-program validation, ex-BP CEO Bernard Looney on the board (Jun 2026)
Weaknesses
- Pre-revenue, undisclosed burn, and a war chest an order of magnitude below fusion leaders
- Hardest-to-manufacture confinement architecture; no full-scale non-planar HTS magnet demonstrated yet
- First revenue realistically mid-2030s; extreme duration risk
- Anchor project controlled by a customer (TVA) with unilateral deferral rights
- Convertible-note bridge ahead of a still-open Series B signals financing friction (as of mid-2026)
Bottlenecks
- Fabrication of non-planar HTS magnets at reactor scale with required tolerances - the defining stellarator engineering challenge
- Series B close and subsequent multi-hundred-million raises before any commercial revenue
- TVA board approval and definitive agreements for Infinity Two (not yet committed)
- REBCO HTS tape supply competing against every other magnetic-confinement fusion program
- Tritium fuel-cycle and blanket technology — unsolved industry-wide for D-T fusion (flagged as a materials gap in DOE's Jun 2026 roadmap)
- Skilled stellarator physics and fusion engineering workforce scarcity
Top signals & trends
Top signals
Among the most concrete US utility-fusion pilot commitments, alongside CFS-Dominion Virginia siting
Regulatory de-risking under the byproduct-material framework, jointly prepared with TVA and state regulators
Bridge instrument ahead of a $250M Series B at $900M pre-money still open per TechCrunch's Jun 2026 roundup
Peer review is rare in private fusion; strengthens technical credibility
The key verifiable milestone; slippage would push Infinity Two beyond mid-2030s
Senior energy-industry governance ahead of the Series B and utility negotiations
National strategy targets fusion pilot plants in the mid-2030s; funding contingent on future appropriations
Trends
Data centers projected to use nearly 3x more electricity by 2035 (cited by TechCrunch, Jan 2026), underpinning utility and hyperscaler appetite for firm clean baseload
Bull Run conversion is a template; interconnection queues favor reuse of existing sites
Sector funding is up sharply (CFS ~$3B, Helion $1.5B at a $15.5B mark), but capital concentrates in leaders; General Fusion's 2025 cash crunch shows the downside for the rest
Lighter-touch than fission licensing per the NRC's 2023 decision; Type One is setting state-level precedent in Tennessee
Supply is growing but every magnetic-fusion program competes for it; cost curve is the industry's key input
SMRs could satisfy firm-clean-power demand a decade before fusion, compressing fusion's premium; X-energy's ~$1.1B Nasdaq IPO (Apr 2026) shows public-market appetite
Ecosystem & competitor graph
Suppliers feed the company; customers pull from it. Line thickness shows the strength of each tie (supply-chain dependency, customer earnings contribution). Hover to isolate a tie.
Major REBCO HTS tape producer supplying the fusion industry (private)
Tokyo-listed HTS tape supplier; key REBCO source for fusion magnets
Tokyo-listed parent of SuperPower, US-based REBCO tape maker
Tokyo-listed; investor via TDK Ventures with magnetics/materials expertise
DOE lab; exascale computing access, fusion materials science, Project Infinity partner
Federal utility; cooperative agreement for the Infinity Two 350 MWe pilot at Bull Run - prospective first customer, subject to board approval
Target licensing customers for follow-on plants (e.g., Duke Energy DUK, Southern Company SO profile)
Indirect demand pull; Microsoft (MSFT) and Google (GOOGL) have signed fusion offtakes with rivals, validating the buyer class
Private; best-funded fusion company (~$3B raised incl. $863M Series B2, Aug 2025); SPARC tokamak targeting net energy gain, ARC plant in Virginia with Dominion; Google 200 MW offtake
Private; $1.5B raised incl. $465M Series G (Jun 2026) at a $15.5B valuation, Sam Altman-backed; field-reversed configuration; Microsoft PPA and Orion reactor under construction - most aggressive timeline claims
Private; direct US stellarator rival (planar-coil array approach, ex-PPPL); $130M raised incl. $100M Series B (May 2026)
Private; Munich-based stellarator startup spun from Max Planck/W7-X; EUR 185M+ raised incl. EUR 130M Series A - Europe's stellarator champion, competes for talent and stellarator mindshare
Private; ~$1.79B raised; beam-driven FRC; longest-running private fusion effort; announced Dec 2025 deal to go public via merger at a reported ~$6B valuation
Private; ~$327M raised; sheared-flow Z-pinch, magnet-free low-capex approach
Private (Canada); magnetized target fusion; 2025 layoffs amid a funding crunch, then a Jan 2026 SPAC reverse-merger plan (up to $335M) - cautionary sector datapoint
Public (NYSE) fission microreactor developer; competes for the same firm-clean-power demand and investor dollars on a faster timeline
HTGR SMR developer; IPO'd on Nasdaq Apr 2026 (~$1.1B net proceeds); Amazon-backed; nearer-term firm clean power at TVA-like utilities
Public (NYSE) light-water SMR vendor; an incumbent public-market proxy for advanced nuclear demand