HH170 (HTS Tokamak, Q>2 Target) by Energy Singularity: status and timeline

HH170 (HTS Tokamak, Q>2 Target)

HH170 is Energy Singularity's next-generation tokamak with 10 Tesla center field and 150 cm major radius, aiming to demonstrate Q>2 fusion energy gain.

ProtoStage 2 of 5

Engineering design phase. Target plasma demonstration with Q>2 equivalent by 2027.

Updated Jul 2026Checked 10 Oct0 updates this week

Milestones

Next · HH170 first plasma and Q>2 demonstration

HH170 first plasma and Q>2 demonstrationTarget Dec 2027+6 mo~~originally Jun 2027~~Not yet reached.

Most important updates

Upcoming

Dec 2027HH170 first plasma and Q>2 demonstration+6 mo~~originally Jun 2027~~in about 59 weeks (next)

Current obstacles

Reaching fusion-relevant temperaturesHH170 must achieve temperatures above 100 million K to reach fusion conditions, a significant step from HH70.
Scaling beyond Q=2Q>2 is intermediate; commercial reactors require Q>10. Each step needs larger machines and better plasma control techniques.

Physics limits

Plasma instabilitiesAt higher temperatures and densities, plasma becomes unstable. Tokamaks use active feedback control; failure quenches plasma in milliseconds.
Superconductor current capacityHTS magnets have a critical current density limit. Energy Singularity's 26.7 T record approaches practical limits for current materials.
Reactor wall materialsFusion neutrons damage reactor walls. No material has been proven to withstand 10+ years of continuous neutron bombardment at commercial power levels.

How it works

3 parts

HTS Magnets

Superconducting coils at higher temperatures

HTS materials maintain zero resistance at ~77 K (liquid nitrogen). Reduces cooling costs versus conventional superconductors.

Compact Design

Small major radius, high field

Stronger magnets confine plasma in smaller space, reducing device size and cost.

Steady-State Plasma

Continuous confinement

Long-duration operation demonstrated by HH70 sets the foundation for HH170's higher performance.

Spec sheet

Spec	HH170 (HTS Tokamak, Q>2 Target)
HH170 center magnetic field	10 Tesla^R (reported)
HH170 major radius	150 cm^R (reported)

^R reported by the company

Peer comparison

Fusion peers

Spec	HH170 (HTS Tokamak, Q>2 Target)	Energy Singularity HH70 (All-HTS Tokamak)
HH170 center magnetic field	10 Tesla^R (reported)	10 Tesla^R (reported)
HH170 major radius	150 cm^R (reported)	150 cm^R (reported)

^R reported by the company

Papers & demos

2 items

Jul 2026talk
IEEE Van Duzer Prize awarded (opens energysingularity.cn)Recognition of advances in superconductor technology for fusion applications.
Jun 2026demo
26.7 Tesla cryogen-free HTS magnet (opens energysingularity.cn)World record for insulated HTS magnet and highest field for cryogen-free HTS systems.

Update log

2 updates

Jul 2026

Minor: Energy Singularity's Jingtian Magnet wins IEEE Van Duzer Prize for superconductor researchPressOther

Jun 2026

Major: Energy Singularity breaks world record with 26.7 Tesla cryogen-free HTS magnetPressHardware

About Energy Singularity

The team behind HH170 (HTS Tokamak, Q>2 Target)

Energy Singularity

HTS tokamak, compact fusion, high-temperature superconductor

Energy Singularity develops high-field compact tokamaks using HTS magnets. HH70 achieved first plasma in June 2024 as the world's first all-HTS tokamak. HH170 targets Q>2 fusion gain by 2027 with 10T center field.

HH70 achieved first plasma in June 2024 as the world's first all-HTS tokamak, later sustaining 1,337 seconds of steady plasma.
Company holds record for 26.7 Tesla cryogen-free HTS magnet achieved June 2026, the highest field for insulated HTS magnets.
HH170 targets 10 Tesla center field and 150 cm major radius, with Q>2 demonstration by 2027.

energysingularity.cn (opens energysingularity.cn)Company profile →

Headquarters: China
Status: Private
Valuation: private
Works in: EnergyFusion
Coverage: 2 programs · 4 updateslatest 1 Jul 2026checked 10 Oct
Partners: IAEA (opens iaea.org)

Spec

HH170 (HTS Tokamak, Q>2 Target)

HH170 center magnetic field

10 Tesla^R (reported)

HH170 major radius

150 cm^R (reported)

Spec

HH170 (HTS Tokamak, Q>2 Target)

Energy Singularity HH70 (All-HTS Tokamak)

HH170 center magnetic field

10 Tesla^R (reported)

HH170 major radius

150 cm^R (reported)