vertical wind turbines home use 1.low wind speed 2.easy installation and operation 3.ISOCE certification ... like the roof of public facilities, companies and residence,etc.Wind-resistant structure, noise-free, vibration-free, and will not ... by the solar-panel. ModelTYD350A-1000TYD350B-2000TYD350C/4Power1000W2000W8000WPerformanceStart-up wind speed1.0m/sec1.0m/sec1.5m/secGenerating electricity speed1.5m ...