Can the most challenging component of a wind turbine be used as the model for sustainable housing? In the Netherlands, a 20-year-old V80 2MW nacelle the heavy-duty shell that once contained a turbine’s gearbox and generator has been transformed into “Nestle,” the Netherlands’ first building code-compliant micro home constructed from such a piece. Measuring 35 square meters, the cream-hued pod, crowned with four solar panels and a skylight, is a dramatic demonstration of how engineering creativity can repurpose an end-of-life industrial building as a habitable space.
The transformation was led by Blade-Made, a company spun out of Dutch architecture firm Superuse Studios, in collaboration with multiple partners including IMd Consulting Engineers for structural support and Woodwave for interiors. “This is basically the most complex thing that you can do with it,” said Jos de Krieger, Blade-Made’s co-founder. “So, all the other less complex things are now easier to imagine and to realize, because this has already been done.” The project debuted at Dutch Design Week 2024, commissioned by Swedish energy company Vattenfall.
The engineering problem arises from the nacelle’s initial function: enduring decades of high winds, vibration, and weathering. Made of steel frames and thick fiberglass composites, nacelles are intended to be rigid and durable, rather than to be dismantled. On a global level, approximately 90% of the weight of a wind turbine primarily steel, aluminum, and recyclable plastic is processable at end-of-life, but blades and nacelles are resistant to traditional recycling because of their high fiberglass content and monolithic construction. The nature of the material is difficult to process, and the component is actually just one piece, said the Technical University of Denmark’s Justine Beauson. Without open-source information on composition, repurposing is a trial-and-error experience like “remodeling an old house,” as Krieger put it.
The problem of waste is growing. In the United States alone, wind blade waste may reach 2.2 million tons by 2050, whereas in the world, approximately 200,000 tons will need to be disposed of every year by 2033. Most European nations have prohibited turbine parts from landfills, boosting the search for alternatives. Though recycling technology continues to progress including Siemens Gamesa’s resin-based recyclable blades and the U.S. Department of Energy’s $5.1 million funding for low-cost recycling widespread industry applications are still limited. As of now, adaptive reuse projects like Nestle serve as a pragmatic middle ground, needing fewer specialized pieces of equipment than thermal or chemical recycling.
Blade-Made has been testing this approach for over a decade, starting with a playground built from five decommissioned blades in 2008. Since then, the company has developed benches, bus stops, and street sculptures from turbine parts. Their latest innovation, the Blade Barrier, converts 37-meter-long, 5,600-kilogram blades into highway sound barriers. By using the blade’s full length without cutting, the design avoids energy-intensive processing. In contrast to traditional concrete barriers that need to be founded every 6 to 10 meters, the Blade Barrier’s engineered support system covers 25 meters, minimizing carbon emissions and material utilization.
Technical challenge of upcycling resides in converting parts designed for aerodynamic function into static architectural or infrastructural application. Blades, for instance, are tapered for lift and torque effectiveness, and contain internal spars and non-uniform wall thicknesses. Nacelles are constructed to accommodate heavy gearboxes and carry torsional loads. Converting these into habitable or public structures requires careful structural analysis, added reinforcement as required, and incorporation of new systems from insulation to electrical work without jeopardizing the integrity of the original shell.
Across the industry, projects such as the Circular Economy for the Wind Industry are creating material passports and the TRACE Tool to monitor component lifecycles and predict decommissioning requirements. These would make projects like Nestle more efficient through detailed information on material properties and structural tolerances. But as Beauson pointed out, manufacturers continue not to want to make design information available, even for retired models, making it difficult to scale up reuse.
The larger picture is that wind turbines themselves are changing. Hub heights and rotor diameters have both grown about 80% and 180%, respectively, since the last 25 years, and today’s onshore wind machines operate up to 310 feet tall. When these larger systems come up for retirement in the next few decades, the quantity and size of parts headed for the waste stream will escalate significantly. MarketsandMarkets estimates that the worldwide wind blade recycling market will grow over 400% by 2029, propelled by need and technology.
Normalizing reuse is the aim of Krieger. Blade-Made is currently preparing to produce a first batch of about 10 Nestle units, working on the design to make it ready for the market. “The easier it will be to convince people, clients and wind farm owners that it is also an option for them,” he said, the better chance the industry has of adopting circular solutions. By doing so, the nacelle formerly the pulsating heart of a turbine may become a building block of sustainable architecture.
