Silica aerogel is a very light, highly porous material used to insulate against heat. Enersens, a company in Isère in south-east France, turns it into thin blankets called Skogar, used as thermal barriers that stop fire spreading between battery cells and protect aircraft, spacecraft and electronics from heat.
The European Innovation Council granted €2,427,794 towards a €3.47 million project to develop a continuous process for making the blankets. The project ended in May 2025, and Enersens has since launched grades rated to 1,700 °C for aerospace. But its accounts in the French company register record revenue of zero for 2025 and a net loss of €680,000.
Company file
- Legal entity
- Enersens SAS, SIREN 487842130, Rochetoirin, France
- Registered
- December 2005
- CEO
- Denery Fenouil (as of 2024)
- Products
- Skogar aerogel composites (ST, HT, VHT, UHT); Kwark aerogel granules and powders
- Markets
- Battery packs, aircraft, space, defence, electronics
- Named customer
- Lilium (eVTOL battery packs, 2024 contract; Lilium insolvent since 2025)
- EIC project
- EN.MOTION, 1 Feb 2022 to 31 May 2025
- EIC funding
- Blended finance
Where Enersens Stands Today
In May 2026 Enersens launched two semi-rigid Skogar grades, VHT with silica fibre rated to 1,400 °C and UHT with ceramic fibre rated to 1,700 °C, for aircraft, re-entry shields and rocket engine zones, both with aerospace fire certifications. Its range now covers −195 °C to 1,700 °C. Its news page in 2026 is mostly trade fairs, from The Battery Show in Stuttgart to Hello Tomorrow and GITEX, plus a meeting of the EIC Scaling Club and membership of the Auvergne-Rhône-Alpes aerospace cluster. It names no new customers.
The Technology: Aerogel in Sheets
Enersens combines aerogel with fibre mats of glass, pre-oxidised, silica or ceramic fibre, giving blankets from 0.5 mm thick. In the EIC project it developed what the CORDIS report calls a "continuous manufacturing process for ultra-thin, ready-to-use aerogel blankets", using microwaves "for rapid and uniform drying", with the product "produced entirely in Europe, with 100% of its feedstock sourced from within Europe".
"We are proud to have the most efficient thermal barrier on the market. We are delighted to have been chosen by Lilium."
Denery Fenouil, CEO, Enersens, February 2024What the EIC Project Promised, and What CORDIS Shows
EN.MOTION aimed to move Enersens to thin insulation made at industrial scale. The CORDIS report describes the continuous process and the Skogar product, and names battery packs, aerospace, defence and micro-electronics as markets. It gives no thickness or conductivity figures, no production capacity, no customers and no revenue.
- A continuous thin-blanket processDeliveredReported on CORDIS.
- A product rangeDeliveredFour Skogar grades by 2026.
- Industrial-scale productionNot shownNo capacity published.
- SalesNot shownZero revenue recorded for 2025.
What Has Happened Since the Award
The Money
In February 2024 Enersens announced a multi-year contract to supply Skogar HT to Lilium for the battery packs of its electric air taxi, without giving volumes. It is a partner in MATICS, a €4.1 million France 2030 project with Verkor and Saint-Gobain on safer battery modules. Lilium filed for insolvency in October 2024 and again on 21 February 2025, when it said "operations will be stopped", according to Vertical Magazine. Enersens's filed 2025 accounts record revenue of zero and a net loss of €679,532. We found no EIC Fund investment or equity round.
What cannot be checked
Whether Enersens delivered anything to Lilium before its collapse, how much Lilium ordered, whether the EIC took equity and how much Skogar it can produce are not public.
Why Europe Should Care
Battery fires are a safety problem for electric vehicles and aircraft, and thermal barriers are part of the answer. Enersens stresses that its material is made in Europe from European feedstock. The EIC funded that capability; turning it into sales is the part the public record does not yet show.
What the project promised
A move to thin aerogel insulation made by a continuous industrial process.
What the record shows
A continuous process, a wider product range and one named customer, which went insolvent; revenue of zero in 2025.
The Verdict
A product without visible sales
EN.MOTION delivered a process and a product family, and Enersens keeps extending it. But a year after the project ended, the company's own filed accounts show no revenue, and its only named customer is an air-taxi maker. The technology exists; the business is not yet visible.
Enersens has not been asked for comment for this article. It is based entirely on company statements, EU project data and the French company register, linked throughout.
