SUBRA, based in Farum north of Copenhagen, develops Subracable, which bundles filaments of high-temperature superconductor into round wires instead of the usual flat tapes, aiming at cables that can carry gigawatts of electricity with almost no loss when cooled. It was selected in the EIC Accelerator's March 2023 cut-off and received an EU grant of €2.50 million for SUBRACABLE, "Making Superconducting power grids a feasible solution for Europe", a €3.57 million project that ran from September 2023 to August 2025, according to CORDIS.
The project is closed. Its final report states that SUBRA validated each stage of manufacturing at pilot scale, built custom machines, a cryogenic quality control system testing cables at up to 1,000 amperes, and "a fully operational pilot facility", with continuous production yields above 80%, according to the CORDIS reporting page. Its 2025 annual report says samples sent to customers "resulted in an order from a customer marking the first major sale for Subra", for delivery in 2026, and that in April 2026 "the company received EUR 40 million in new equity", according to filings with the Danish Business Authority.
Company file
- Legal entity
- SUBRA A/S, CVR 35643303, Farum
- Product
- Subracable, bundled high-temperature superconductor
- Investor named
- Novo Holdings (convertible loan, converted 2026)
- New site
- Måløv, Denmark, for large-scale production
- Other markets
- Fusion diagnostics, neutron scattering, accelerator magnets
- Staff
- 28 average in 2025; 40+ stated
- EIC funding
- Grant first
Where SUBRA Stands Now
SUBRA signed a lease in Måløv to establish large-scale production of Subracable, and completed its €40 million equity raise in April 2026, its annual report says. Novo Holdings, which provided a convertible loan at the end of 2024, converted it into equity in the same raise. The company also works on superconductor-based diagnostics for fusion machines and neutron scattering facilities, and on magnet designs in the Horizon Europe HyLICAL liquid hydrogen project.
"This resulted in an order from a customer marking the first major sale for Subra. This Subracable will be fully produced and delivered during 2026."
SUBRA A/S, annual report 2025The Technology: Round Wires From Flat Tapes
High-temperature superconductors are usually made as flat tapes, which are hard to bend and bundle into cables. SUBRA makes filamented superconductor and bundles it into wires, with metallisation to control heat and mechanical behaviour, its reports say. The company claims its cable would cut energy losses by 90%, copper use by 99% and the levelised cost of transmission by 55%, estimates for which no independent verification has been published.
What the EIC Award Promised, and What the Record Shows
The award aimed to make superconducting power grids feasible by proving Subracable could be produced at scale. The final report documents an operational pilot line and cable-length strands tested at cryogenic temperatures, and the company followed with a first commercial order. A grid installation has not yet been announced.
- Pilot production lineDeliveredOperational by 2025.
- Quality controlDeliveredCryogenic tests to 1,000 A.
- First customerDeliveredOrder at end of 2025.
- Grid deploymentNot yetNone announced.
The Money
SUBRA's net loss rose from DKK 6.1 million in 2024 to DKK 43.8 million in 2025, and equity was minus DKK 60.9 million at the end of 2025, carried by DKK 79.4 million of long-term liabilities. The April 2026 raise and the loan conversion addressed that. The customer and value of the first order are not named.
What Cannot Be Checked
Questions for the EIC
Who led the €40 million round, who placed the first order and for what, and when a Subracable will carry power in a real grid are not public.
Why Europe Should Care
The final report says Europe's planned grid expansion with conventional cables would need 37 million tonnes of copper, double annual world production. A cable that uses almost none would ease that bottleneck. SUBRA has moved from a pilot to financed industrialisation with EIC support along the way.
What the award promised
A scalable, cost-effective superconducting cable made at pilot scale.
What the record shows
A working pilot line, a first commercial order and €40 million to build a factory.
The Verdict
Delivered and funded
SUBRA did what the EIC paid for and has raised the money for the next step. Its cable now has to prove itself in the grid.
SUBRA and the EIC have not been asked for comment for this article. It is based entirely on public records and published statements, linked throughout.
