A collection featuring straw-based innovations for a decarbonised built environment.
In Lelystad, Netherlands, a logistics hub is taking shape that not only sets records but redefines what large-scale industrial construction can look like. Designed by Henning Larsen for BESTSELLER, the 155,000 m² Logistics Center West (LCW) is now the largest straw panel building project ever designed — and EcoCocon is at the core of it.
With 40,900 m² of straw wall panels supplied, EcoCocon is helping anchor the building’s identity as Europe’s largest timber logistics centre. The project integrates over 23,000 m³ of mass timber and is on track to achieve a BREEAM “Outstanding” certification. But more than ticking boxes, LCW demonstrates how bio-based materials can deliver performance at scale.
“We are super proud of being part of this project,” says Lars Keller, CEO of EcoCocon Denmark. “Having worked focused for many years to get the building sector to embrace the potential of using straw, it is hugely satisfying to now see EcoCocon’s straw panels being implemented on this scale. It is a truly spectacular project, a real moonshot that we are certain will introduce biogenic materials in general to a much wider audience.”
Founded in 2008 in Lithuania, EcoCocon is a construction technology company focused on delivering biobased wall panels made from straw. Its prefabricated straw panel system is made from 98% renewable material — about 89% straw (a byproduct of wheat farming) and 10% sustainably sourced timber by mass.
The wall system offers passive-house-level thermal performance, breathability, and fire safety. With modular construction speeds of up to 60 m² per day, the system suits both low-rise and mid-rise buildings across a variety of climates.
Their signature wall buildup includes an airtight yet vapour-open membrane, an exterior wood-fibre board, and a clay plaster interior finish. This results in a robust, high-performing wall that meets demanding fire, acoustic, and structural standards — all while being designed to safely return to the biosphere at end-of-life.
Other certified interior finishes include gypsum board, gypsum fibre board, and gypsum plaster.
What makes LCW particularly notable is its role as a real-world showcase for EcoCocon’s straw panel technology at unprecedented scale. The site is expected to incorporate more than 30,000 m² of solar panels, 1,400 robots for logistics operations, and more than 40% of the land dedicated to wetlands, forests, and biodiversity-enhancing green spaces.
Together with its biogenic material strategy, the project anticipates massive carbon savings — both in terms of operational emissions and embodied carbon through material choices.
The design team includes Ramboll (engineering), KNAPP (automation), and Bouwbedrijf L. van de Ven BV (construction), reflecting a collaborative model where innovation is shared across disciplines.
“What excites me most about this project is that it’s both a technical achievement and a cultural one,” says Petra Régnacq Trnková, Co-CEO of EcoCocon. “It’s showing the world that beauty, scale, and sustainability can coexist.”
EcoCocon’s panels are certified by the Passive House Institute and have achieved Cradle to Cradle Certified® Silver. They provide excellent insulation, fire resistance up to REI 120, and air-tight but moisture-regulating wall assemblies. Notably, they’re also acoustically robust, with sound insulation of approximately Rw = 54 dB.
Despite their natural origins, these panels meet the stringent demands of modern construction — and often exceed them. Quick installation, performance reliability, and minimal embodied emissions make the system a strong fit for projects prioritising energy performance and low-impact materials.
Looking to work with materials that combine high performance with biogenic credentials? EcoCocon’s full range of straw-based construction products is available on revalu — where architects, consultants and contractors can find and compare EPD-backed materials fit for circular, low-impact construction.
Check out EcoCocon on revalu and see how nature-based building solutions are entering the mainstream.
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