Building energy efficiency
made simpler with
materials science and
artificial intelligence.

Building energy efficiency
made simpler with
materials science and
artificial intelligence.

Building energy efficiency made simpler with materials science and artificial intelligence.

Custom exterior insulation panels from upcycled sawdust, designed with ML enabled algorithm for faster, low-carbon facade retrofits and new builds.

Custom exterior insulation panels from upcycled sawdust, designed with ML enabled algorithm for faster, low-carbon facade retrofits and new builds.

Hidden costs of the €15 trillion
construction industry.

Industrial emissions
36%
of global CO₂ emissions
Construction waste
40%
of global waste
Buildings and energy consumption
35%
of energy consumption

It’s time buildings become part of the solution.

It’s time buildings become part of the solution.

It’s time buildings become
part of the solution.

Material and artificial intelligence combined.

Material and artificial intelligence combined.

Material and artificial intelligence combined.

MATERIAL intelligence (hardware)

NERA Panels

Upcycled sawdust meets bio-based binders. Robotically 3D printed, carbon-storing exterior insulation panels with fully customizable geometry.

~1 m² prefabricated units. For renovation and new build.

ARTIFICIAL intelligence (software)

RetrofitOS by NERA

ML software translates building data, climate information and regulations into facade retrofit strategies ranked by cost, speed, ROI and carbon.

Available standalone or together with NERA panels.

A circular process to find the exact fit for your building.

Step 01 of 06
Architect reviewing a thermal analysis of a residential facade
01

Analysis, design & optimization

Carbon and energy savings report, panel thickness, insulation core, attachment details and a print-ready file.

02

Feedstock

Sawdust sourced from partner sawmills in Catalonia. Local waste becomes a new building resource.

03

Material

Bio-based binders and additives transform sawdust into a 3D-printable composite.

04

Fabrication

Robotic off-site 3D printing, with no post-processing. Made to match your building, not "one-size fits all".

05

Assembly

Prefabricated ~1 m² ready-to-install pieces bring precision and predictability to the site.

06

Installation

Fixed to the existing wall as exterior insulation. Faster facade renovation while residents stay home.

A circular process to find the exact fit for your building.

Step 01 of 06
Architect reviewing a thermal analysis of a residential facade
01

Analysis, design & optimization

Carbon and energy savings report, panel thickness, insulation core, attachment details and a print-ready file.

02

Feedstock

Sawdust sourced from partner sawmills in Catalonia. Local waste becomes a new building resource.

03

Material

Bio-based binders and additives transform sawdust into a 3D-printable composite.

04

Fabrication

Robotic off-site 3D printing, with no post-processing. Made to match your building, not "one-size fits all".

05

Assembly

Prefabricated ~1 m² ready-to-install pieces bring precision and predictability to the site.

06

Installation

Fixed to the existing wall as exterior insulation. Faster facade renovation while residents stay home.

Built for everyone around the building.

  • 100% design flexibility and optimization
  • Up to 20% contribution to BREEAM certification points
  • Low embodied and operational carbon

Maximum customization. Minimum waste.

Maximum customization. Minimum waste.

Maximum customization. Minimum waste.

Thermally insulative

Keeps homes warmer in winter and cooler in summer, cutting heating and cooling bills.

Carbon storage

Stores the carbon captured by the wood for the life of the facade.

Upcycled

Made from sawdust from partner sawmills in Catalonia.

Lightweight

Light, prefabricated panels of about 1 m² that are quick to install.

Circular

Biobased and designed for disassembly, so panels can be recovered.

100%

Custom geometry

Every panel is 3D printed to fit your building.

Local feedstock, precision fabrication and a bio-based material strategy bring circular thinking to the building envelope.

Supported by

Supported by

  • BeVisioneers, the Mercedes-Benz Fellowship
  • Esade
  • Fundación máshumano
  • El Corte Inglés
  • EIT Culture & Creativity, co-funded by the European Union
  • EIT Culture & Creativity, 100 to Watch
  • ITeC
  • Barcelona ConTech Hub
  • BeVisioneers, the Mercedes-Benz Fellowship
  • Esade
  • Fundación máshumano
  • El Corte Inglés
  • EIT Culture & Creativity, co-funded by the European Union
  • EIT Culture & Creativity, 100 to Watch
  • ITeC
  • Barcelona ConTech Hub
  • BeVisioneers, the Mercedes-Benz Fellowship
  • Esade
  • Fundación máshumano
  • El Corte Inglés
  • EIT Culture & Creativity, co-funded by the European Union
  • EIT Culture & Creativity, 100 to Watch
  • ITeC
  • Barcelona ConTech Hub

Frequently Asked Questions

Frequently Asked Questions

Let’s build a biobased future together!

Ready to build with bio-based panels?

Ready to build with bio-based panels?

Ready to build with bio-based panels?

Tell us about your project and we’ll explore the potential for a lower-carbon facade, better thermal comfort and a clearer renovation plan.

A first conversation. No commitment.

We’ll use your details to respond to this enquiry. Privacy policy to be added before launch.

wood waste redefined.

Carrer de Lepant, 270, 08013, Barcelona, Spain

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© 2026 NERA ECO CONSTRUCTION S.L.

© 2026 NERA ECO CONSTRUCTION S.L.

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