‍Thin

Robust

Reusable

The future of Insulation

Ideal for Containers, Buildings
and Energy Storage.

Stainless steel thermos flask illustrating the operating principle: no core layer, pure vacuum

What do we do?

V21 has developed the world’s first durable, Circular Economy, high-performance vacuum insulation panel made from stainless steel — launching a new era of thermal insulation.

Ultra-thin

3 cm of ZeroCoreVac provides the same insulation performance as 30 cm of mineral wool.

High efficiency

up to 60% energy savings

Long-lasting

50+ years, extremely robust

Circular Economy

reusable and fully recyclable

Ideal for Containers, Buildings and Energy Storage.

Space Saving
Retro-fit Insulation possible

Comparison graphic: ZeroCoreVac metallic panel with a 3 cm build-up compared with 30 cm of mineral wool insulation at equivalent insulation performance.

What is our product?

We have developed a new insulation standard: ZeroCoreVac — our vacuum insulation technology with a stainless steel shell and no core layer.
‍
Patented in EU, US, JP and CN.

More Patents Pending

We have flattened the thermos flask.

Flexible panel size. Only 30mm thick.

No core layer. Pure vacuum.

Stainless Steel. Long durability.

Circular economy ready

V21 is the new player in the world of insulation.

For the past years, we have developed the insulation for the next generation. Our V21 Panel has no core layer. We use stainless steel and pure high vacuum.

Modular Container

School, Living, Office Containers. More Space, less energy

Stationary Reefer Containers

Stationary Reefer Containers. Up to 60% more energy efficiency.

Serial Renovation

70% less insulation Material.

The Flat Thermos Flask.

Although the number of use cases of a steel thermos flask is limited, our product offers a higher number of use cases while being able to obtain the same level of performance.

First use case

Insulation for Containers

We replace the standard PUR insulation with V21 Panels.

Modular container with insulation layer shown in cutaway

Only 3-5 cm Insulation.
U-Value of 0.15 W/m²K

60% more energy efficient Ideal for Reefer containers

Newbuilds & Retrofit

Proof

The technology works!

Patents

More Patents Pending

Technology

Fraunhofer ISE 
Proof of thermal conductivity

Awards

DBU Green StartUp Winner  
Seal of Excellence (European Commission)

What makes us different?

3cm instead of 30cm

50-year Lifespan

Awards

Circular Economy

Fast ROI

Unique Patented Design

Our team

Founder;CEO

Roland Wiedenroth

Experienced logistics and industry expert. Leads strategy, financing, and market entry, and develops V21 into a new standard for energy-efficient systems.

CIO

Dr. Jens Struckmeier

Co-founder and clean tech pioneer. Responsible for technology, product development, and IP, he strengthens V21's technological leadership with his many years of engineering expertise.

CTO

Dr. - Ing. Tom Marr

Materials engineer with a focus on automation and manufacturing. Leads panel development for V21 and drives design for manufacturing and series production readiness for ZeroCoreVac technology.

CFO

Kristina Rübenkamp

Start-up CFO with a focus on planning, controlling, and investor communications. Manages finance, HR, and reporting, creating transparency and structure for scalable growth.

Chairman

Nicolas Röhrs

Co-founder and experienced technology entrepreneur. Builds strategic industry partnerships and supports scaling, market penetration, and shareholder management at V21.

Marketing

Doreen Grossmann

Doreen is responsible for accounting, research and social media.

Thin high performance V21 Panels.