Review on 400W DC 12V Wind Turbine Generator With Controller For Marine, RV, Homes & Industrial Energy - By Happybuy by Anna Daughtry

Ok so I bought this to supplement my solar and here are some things I found.5-10mph starts spinning10-15 produces 10-50 watts15-20 produces 50-100 watts20-25 produces 100-200 wattsNot sure above that but mine has peaked at 220wattsSome other things to mention as well make sure you have the blades balanced before you put it up and to note that one turbine alone is not going to net you alot you need 2-3 before you get the good production out of a wind turbine system as wind speeds vary constantly so keep that in mind!I am for the most part very pleased with thisturbine and the seller for the first one I bought was defective and they sent me another that showed up before I sent the defective one back!I will update again later as I have more info!