Biome Renewables - Maple Seed Wind Turbine — Biome Renewables

Biological model: Maple seed (Acer) autorotation; Barn owl (Tyto alba) silent flight feathers

Company: Biome Renewables

Maple seed spinning descent inspires PowerCone retrofit for wind turbine blades, increasing energy capture by 10-13%.

The challenge

Wind turbine efficiency plateaus as blade designs approach conventional aerodynamic limits. Retrofitting existing turbines with minor improvements is economically attractive but challenging. Aerodynamic enhancements requiring no blade replacement are needed.

Nature's strategy

Maple seed samaras spin during descent, creating controlled vortex dynamics that reduce terminal velocity and enable long-distance dispersal.

What was emulated

Controlled vortex generation; rotational aerodynamics; efficiency across variable flow regimes; adaptation to extreme conditions; passive flow redirection.

The innovation

PowerCone retrofit featuring maple-seed-inspired vortex geometry that enhances blade-tip aerodynamics and recovers energy lost to stall-region separation.

Full case study

Maple seeds possess an elegant aerodynamic design: flattened, winged samaras that spin as they descend, creating controlled rotation that slows their fall and disperses them far from the parent tree. This spinning motion minimises terminal velocity, allowing even winds to carry seeds kilometres away. Engineers at Biome Renewables recognised that maple seed aerodynamics—specifically the controlled vortex dynamics created by the spinning wing—could enhance wind turbine blade efficiency. Conventional turbine blades stall at high wind speeds when boundary-layer separation creates dead zones near blade tips. Biome developed the PowerCone: a retrofit featuring maple-seed-inspired geometries that redirect blade-tip airflow and induce counter-rotating vortices similar to a spinning samara's wake. Field installations show PowerCone retrofits increasing energy capture 10-13% across wind speeds, with particular gains during high-wind stall conditions where conventional blades lose efficiency. The retrofit mounts on existing turbines without replacing blades or major modifications, making it economically viable for vast installed-base improvements. By studying how nature optimises rotation and descent through seed design, Biome unlocked efficiency gains previously requiring complete turbine redesign.