Vertical Wind Turbine at 20KW, for home system. Vertical Wind TurbineFeatures: Ideal for home electricity system. High Efficiency, High reliabilityStart Up in Gentle BreezeLong Lifetime up to 15 years, Maintenance- freeLight Weight, Easy to InstallHeavy Wind Resistance, Low NoiseAnti-Rust, Anti-CorrosionDamp-Proof, Water-Proof, Sand-Proof Vertical Wind Turbine