Wind Energy

Composite wind turbine blades for DESA A300 wind turbines.

Location / Year
Buenavista Wind Farm,  Spain, 1996
Llanos de Juan Grande Wind Farm, Spain, 1996
Tahivilla Wind Farm, Spain, 1996
Zas Wind Farm,  Spain, 1996

Composite Design & Fabrication
Designed and manufactured by Desarrollos Eolicos, Sevilla, Spain (DESA)

DESA  A300 wind turbines use three 15 meter blades to convert wind energy into electricity.  The A300 has a maximum power rating of 300 kW.

Each blade is a self supporting composite structure molded in one step using proprietary resin infusion technology. The blade composite material is epoxy vinyl ester resin with glass reinforcement.

Service Conditions
Wind, rain, sun, sand, dynamic and static stresses (vibration/fatigue loads, high winds, etc.).

Why This Solution?
Composite materials are chosen for use in wind turbine blades because they have:

  • High strength to weight ratio
  • Excellent toughness
  • Low moisture abortion
  • Corrosion resistance
  • Flexible manufacturing
  • Lower total cost compared to alternative materials

All DESA A300 turbine blades in service have been performing without problems since instillation in 1996.