2G REBCO superconducting tape by Shanghai Superconductor Technology: status and timeline

2G REBCO superconducting tape

Make high-temperature superconducting tape cheap and plentiful enough for compact fusion reactors and grid equipment, scaling output more than tenfold.

ScalingStage 5 of 5

Selling over 1,000 km a year; a Pudong base for at least 15,000 km a year is planned, funded partly by an IPO.

Updated 15 Nov 2025Checked 11 Oct0 updates this week

Milestones

Next · IPO review on Shanghai's STAR Market

Company founded in Shanghai2011Complete.
Commercial 2G superconducting tape sales begin2015Complete.
Annual capacity reaches 1,334 km2024Complete.
¥2.5B Pudong production base signed25 Mar 2025Complete.
STAR Market IPO filing accepted (¥1.2B raise)18 Jun 2025Complete.
IPO review on Shanghai's STAR MarketNowCurrent milestone.
Pudong base: 15,000+ km per year capacityNot yet reached.

Most important updates

Current obstacles

Funding a tenfold expansionThe 15,000 km base costs ¥2.5B; the ¥1.2B IPO meant to fund its first phase (about 6,000 km a year) was still under review in 2026.
Rival tape makersEastern Superconductor and Faraday Factory Japan match its 77 K current, and some rivals carry more in strong fields, keeping prices under pressure.

Physics limits

Needs cold to workREBCO only superconducts below about 90 K (-183 °C), and carries far more current at 20 K or lower. Every magnet or cable needs cryogenic cooling, which adds cost and failure points.
Grain boundaries kill currentCurrent crosses misaligned ceramic grains poorly, so the film must be nearly a single crystal over kilometres. This is why the tape is made by slow, precise vacuum deposition rather than drawn like wire.
Brittle ceramic under huge forcesFusion magnets squeeze and stretch the tape with enormous magnetic forces. The ceramic layer cracks if strain passes a fraction of a percent, so it relies on its metal backing.

How it works

4 parts

Substrate

Polished metal ribbon

A thin, strong metal tape is electro-polished smooth. It carries the brittle ceramic layers and gives the tape its strength.

Buffer

Crystal-aligning layers

Ion-beam-assisted deposition grows buffer layers whose crystals all point the same way, a template for the superconductor.

REBCO

Laser-grown superconductor

Pulsed laser deposition grows a micron-thin REBCO film that copies the aligned template, so current flows across grains without loss.

Finish

Slit, plate and laminate

Wide tape is laser- or mechanically slit into narrow strips, electroplated for protection and current sharing, and laminated for cables or magnets.

Spec sheet

Spec	2G REBCO superconducting tape
Annual capacity (2024)	1,334 km^R (reported)
Planned base capacity	15,000+ km/yr^R (reported)
Critical current, 77 K, no field	110-250 A^R (reported)
Critical current, 4.2 K, 10 T	350-800 A^R (reported)
Tensile strength	600-700 MPa^R (reported)
Production yield	>90%^R (reported)
China market share (2022-24)	>80%^R (reported)
Revenue (2024)	¥240M^R (reported)

^R reported by the company

Update log

3 updates

About Shanghai Superconductor Technology

The team behind 2G REBCO superconducting tape

Shanghai Superconductor Technology

2G REBCO superconducting tape

Shanghai Superconductor makes second-generation high-temperature superconducting tape, the material behind compact fusion magnets, superconducting power cables and high-field magnets. It is one of two makers worldwide producing over 1,000 km a year and holds over 80% of China's market.

Over 80% of China's 2G superconducting tape market in 2022-2024; 2024 capacity 1,334 km.
Revenue grew from ¥36M in 2022 to ¥240M in 2024, turning a ¥73M profit in 2024.
Filed for a ¥1.2B STAR Market IPO in June 2025 to fund a new tape plant in Pudong.

shsctec.com (opens shsctec.com)Company profile →

Founded: 201115 yrs
Headquarters: China
Status: Private
Valuation: private
Staff: ~385Jan 2025
Works in: MaterialsAlloys & superconductors
Coverage: 1 program · 3 updateslatest 15 Nov 2025checked 11 Oct
Customers: Energy SingularityCommonwealth Fusion SystemsTokamak Energy
Investors: Tongling Jingda Special Magnet Wire (opens filingreader.com)
People: Ma Tao (opens finance.sina.com.cn)Chairman

Spec

2G REBCO superconducting tape

Annual capacity (2024)

1,334 km^R (reported)

Planned base capacity

15,000+ km/yr^R (reported)

Critical current, 77 K, no field

110-250 A^R (reported)

Critical current, 4.2 K, 10 T

350-800 A^R (reported)

Tensile strength

600-700 MPa^R (reported)

Production yield

>90%^R (reported)

China market share (2022-24)

>80%^R (reported)

Revenue (2024)

¥240M^R (reported)

2G REBCO superconducting tape

Milestones

Most important updates

Current obstacles

Physics limits

How it works

Polished metal ribbon

Crystal-aligning layers

Laser-grown superconductor

Slit, plate and laminate

Spec sheet

Update log

Sat 15 Nov 2025

Fri 11 Jul 2025

Tue 25 Mar 2025

About Shanghai Superconductor Technology

Current obstacles

Physics limits

How it works

Polished metal ribbon

Crystal-aligning layers

Laser-grown superconductor

Slit, plate and laminate

Spec sheet

Update log

Sat 15 Nov 2025

Fri 11 Jul 2025

Tue 25 Mar 2025

About Shanghai Superconductor Technology