Hydro & Aero Dynamics Engineering who are we ? Welcome to our site..but..please..take 5 minutes of your precious time to read this intro with great attention !! Greenenergy Research Center is an independent idealistic team of Hydro & Aero Dynamics engineers. specializied in developments of renewable dynamic energy (Hydro & Aero) First of all : Something you have to know !!! Altough, our VAWTs are top level engineering : Even, we have some worldrecord performances on our name (hybrid) No one can violate the laws of physics !! So...before you start "dreaming" Here is THE NAKED TRUTH  about investing in windenergy, or absolutely not !! We thought it was our duty and high time to spread the real and only truth about windmills. We thought it was also our duty to help eliminate the “internet” scam from  “miracle performing mini windmills” so called manufacturers/scammers.               As you will see,"THE" reality !!! can be very hard and cruel sometimes ! If you take a closer look at the "performances", you will see, it can take you more than 1700 years !! for "return on investment", ( if.. insufficient wind of course..) First of all: if you are looking for "miracle technology" we will have to disappoint you. Our turbo 's are not as SUPER HIGH TECH as you would like to hear from us. (there is enough "super high tech" scam on the market) They are solid reliable "Long Life" & "High Performance" machines, born of a unique Technology (Superbooster Technology) Our turbo's are simply the result of thorough study, aerodynamic engineering, countless prototypes and ….. a mass passion by "Superbooster Technology" inventor Alex Erauw and his Greenenergy engineering team. Unfortunately enough, internet is filled with the craziest (nonsense) designs producing most incredible "miracle" performances. supported by very well done "fake" 3D movies + lots of media articles (awards for best design, best innovation etc.. etc..) If needed, with the testimony of few well known (payed) moviestars ... and the scam is complete!!! But..none of them, ever proved results or dare show "live" performances.(because, so called “topsecret”..ha..ha..ha..) Why ?.... just because it's physically IMPOSSIBLE! (Betz law) ..as simple as that !!!! Anyhow .. Our turbo"s are producing practically double !!!! more Betz(+-39%) than the most sophisticated "Savonius"(drag)VAWT ( +- 21 % Betz rentability) Our Hybrid even 56% Betz !! (apparently the most Betz ever produced by a windmill) The (lift) "Darrieus VAWT's " massively sold by the Chin..., are not an option because they require too much wind (which we usually don't have !!) They are not self-starting and are subject to immense material fatigue(spinning much too fast) So Please !!!! Forget about these ! About the "micro" HAWT windmills, It's not even worth to ad any comment !! (rather give your money to charity) but make no mistake ...(energy from wind turbines is indeed, proven to be 10 times cheaper than solar panels)... you still need enough WIND !!! even... you need less wind for our Superbooster and far less for our Hybrid, still you need sufficient wind ! to rentabilise your investment short term. That means... NEVER! invest in a windgenerator, without prior local measurements!   The PERFECT windmill should( in Betz theory) be able to produce Betz 58/59% .But this has ever been achieved and probably never will Our turbo's have the advantages, producing no sound and no resonance vibrations (on buildings and houses). They avoid optical pollution (reflections). They are SAFE (no risk of degrading and fly-away wing blades etc) and..most important.. they are MAINTENANCE FREE! (magnetical levitation) and in case you're interested….they don't kill birds.. The life expectancy is estimated 3 x longer than HAWTs. ( 35 years…and more, due to the Stainless steel construction, no friction, no gears, monoblock turbine/generator and minimum material fatigue ) So, what's now so special about our turbo? Our Turbo Technology is based on "turbulence impact", "mass compression", "vacuum suction", "vortex attack" and "drag / lift overtake momentum" The exact synchronization and combination of these 5 above kinetic phenomena makes our turbo so unique performing.(kinetic synchronization) to see how it works : click on In fact, our turbo's were, first of all, created as "City Mills" because it is really the only !!! system usable on a building. no vibration, "no noise", "no optical pollution", "no foundation", "lightweight" and …SAFETY !!! ( there are hundreds of thousands buildings on our planet with useless roofs) and ...we don't "steal" one square meter of our precious farmland (when placed on buildings, skyscrapers, water towers etc..etc.. ) Our Turbo & Hybrid are usually even invisible on a building (from the ground) (optical pollution.) The Turbo & Hybrid does not need giant cranes for installation (all parts "knock down"can be assembled on the rooftop) Now a new phenomenon appears !! Because of the above mentioned advantages, our turbo's have attract attention for groundlevel use in wind farms, industrial constructions etc… Why this attention for our turbo's ? 1 More difficulties to obtain licenses for HAWTs (safety, noise & reflections) 2 HAWTs don't work at groundlevel (less than 25 meter high) because they need stable wind (our VAWTs work at any level!! & with ALL winds) 3 The Solar panels rentability  is much lower than our machines and have too much degrading & recycling problems 4 The incredible lifeexpectancy of our turbos 5 Our turbo produces decent power (even at ground level) and contribute to your independency (reckless energy price risings ) 6 NO heavy foundations required. 7 Easy access to the engine 8 The imperishable PMG generators (invented by Alex Erauw)           9 The exceptional quiet operation          And "last but not least" : our turbo's don't kill birds !!!!!                  Thanks for your patience reading this message          Save The Planet          Greenenergy Research Center Team PERFORMANCES PERFORMANCES