COMPARISON VERTI TURBINE CHARACTERISTICS Comparison of the VERTI turbine with competitive products Power curves measured at input terminals for VERTI turbines 12 000 10 000 8 000 AIRON GET VERTI VERTI 7 kw VERTI 5 kw VERTI 3 kw VERTI 1 kw Power [W] 6 000 4 000 2 000 0 0 1 1,5 2 2,5 3 3,5 4 4,5 5 5,5 6 6,5 7 7,5 8 8,5 9 9,5 10 10,5 11 11,5 POLAND GERMANY USA ITALY Wind speed [ m/s] Avarage annual energy production vs. CO 2 emission avoidance for all turbine types 30 14 Efficiency factor 0,50 0,40 0,30 0,20 0,10 0,00 0,35 0,14 no data 0,24 0,37 no data 0,23 0,52 0,17 0,07 0,26 0,08 0,26 0,09 0,27 0,09 0,27 0,11 0,26 0,11 0,26 0,12 0,24 Av. annual energy production 25 20 15 10 5 0 4 m/s 5 m/s 6 m/s 7 m/s 8 m/s 9 m/s Wind speed 12 10 8 6 4 2 0 CO 2 avoidance Wind speed 4 m/s 5 m/s 6 m/s 7 m/s 8 m/s 9 m/s 10 m/s 11 m/s 12 m/s VERTI 1000 MWh/year VERTI 3000 MWh/year VERTI 5000 MWh/year VERTI 7000 MWh/year VERTI 1000 CO 2 /year VERTI 3000 CO 2 /year VERTI 5000 CO 2 /year VERTI 7000 CO 2 /year Type Nominal power [W] (at Vw=10 m/s) Starting speed Nominal wind speed Rotor diameter Rotor height Blade material Number of blades Nominal rotor speed [RPM] (at V W =10 m/s) Length / diameter of the generator- -inwerter wire aluminium electrical microprocessor construction -40 0 C -: + 70 0 C metal VERTI 1000 1000 W 2,5 m/s 10 m/s 2,10 m 1,92 m alloy 3 227 30 m / 4 x 1,00 mm 2 48 V 1 x 230 V AC and mechanical aluminium electrical microprocessor construction -40 0 C -: + 70 0 C metal VERTI 3000 3000 W 2,5 m/s 10 m/s 3,95 m 2,76 m alloy 3 121 30 m / 4 x 1,50 mm 2 96 V 1 x 230 V AC and mechanical aluminium electrical microprocessor construction -40 0 C -: + 70 0 C metal VERTI 5000 5000 W 2,5 m/s 10 m/s 5,12 m 3,58 m alloy 3 93 30 m / 4 x 2,50 mm 2 96 V 3 x 400 V AC and mechanical aluminium electrical microprocessor construction -40 0 C -: + 70 0 C metal VERTI 7000 7000 W 2,5 m/s 10 m/s 6,05 m 4,23 m 16 alloy 3 79 30 m / 4 x 2,50 mm 2 96 V 3x 400 V AC and mechanical 17 Battery voltage Inverter s output voltage Brake Control system Mast / Pole Temperature range

Different wind turbines efficiency comparison Power coefficient, C p 0,7 Due to its unique design the VERTI turbine has low starting speed and a few times higher efficiency compared to other small wind turbines. Custom-made Integrated Control Unit allows to gain its maximum efficiency at particular wind conditions. Betz limit 0,6 Theoretical power coefficient (infinite number of blades) Three bladed rotor 0,5 Two bladed rotor One bladed rotor 0,4 0,3 Darrieus rotor 0,2 American wind turbine Mechanical Engineering and Telecommunication and Electrotechnics Department of University of Science and Technology in Bydgoszcz, Aerodynamics Research Laboratory in the Institute of Aviation in Warsaw performing the tests in the wind tunnel. Savonius rotor 2 VERTI Institute of Electrical Drives and Machines KOMEL, Dutch windmill 0,1 0 TURBINE The VERTI turbine was built during seven years of intensive works of the scientists from Cracow University of Technology and Research and Development Department of Airon Investment S.A. In the process of improving its parameters we have closely cooperated with professors and engineers from: Wind Engineering Laboratory of the Institute of Structural Mechanics, Civil Engineering Department, Cracow University of Technology, 4 6 8 10 12 14 16 18 Tip speed ratio, SUPPORTING STRUCTURES MAST Cracow University of Technology University of Science and Technology in Bydgoszcz Institute of Structural Mechanics Polytechnic Cracow Faculty of Mechanical Engineering Wind Engineering Laboratory Institute of Structural Mechanics Civil Engineering Departament Cracow University of Technology Department of Telecommunications and Electrical Engineering Institute of Electrical Machines and Drives KOMEL MAST POLE ROOF MAST Institute of Aviation in Warsaw We have obtained the following certificates to offer highest quality services: Quality management system ISO 9001:2008 Environmental management system ISO 14001 As a complex supplier we also offer different supporting systems* made of high quality steel: roof grip for VERTI 1000 only roof mast for VERTI 1000 only: - 3 m high and 2 m radius - 6 m high and 3 m radius - 9 m high and 4 m radius 18 guyed mast in 6-meter sections standard construction: - 12 m high and radius 5 m - 18 m high and radius 8 m pole in 6-meter sections standard construction: - 6 m, 12 m and 18 m high * on the customer s request the supporting systems may be modified. Welding certificate PB-EN 15085 - highest level CL1 Steel and aluminum constructions certificate PN-EN ISO 1090 EXC3 Due to local regulations and limitations availability of particular models of turbines and accessories may differ depending on the specific market. The manufacturer reserves the right to alter technical specifications and other product information without prior notice. 19