Wind energy

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WPM Green Energy is partnering with Hi-Energy Korea to offer their exceptional vertical-axis wind turbines, which stand out from the rest of the existing propeller type turbines. They have been developed specifically for environments with mild winds and rapid changes in wind direction. Our technology with its high energy efficiency and stability, has been widely recognized around the world.


» Rotor: Connected joints of blade, central axis of wind turbine.
» Blades: Wings that rotate by the wind. Same structure as the wings of an airplane with lift rotor blades; increases accelerating force through tension and enables abrupt acceleration in wind speed. Delivers power needed for starting the blades of drag force; applicable for various types of winds; convenient to convert to lift force after acceleration through drag force.
» Generator: A device that converts rotations of blade into electrical energy PMG-type Generator (PMG: Permanent Magnet Motor). Even if wind stops blowing, there's no rolling resistance problem caused by zero load. Therefore, it maintains rotating status for a certain while, boasting high energy resilience when wind starts blowing again.
» Controller: A device for charging/controlling the generated electric energy in (rechargeable) batteries.
» Battery: Gathers the generated electricity to provide power when needed.


» High efficiency achieved by acceleration through a sweep-back angle: Even more energy generated under the same wind speed (other products generate energy in proportionate to wind speed)
» Independence over wind direction: Other products generate less energy against a head wind, however, our products generate more energy. Energy conversion is available for any direction of winds.
» Energy generation by gentle winds: Our generator in the form of PMG (Permanent Magnet Motor) has no gear or coil.This permanent magnet motor can be propelled even with light winds unlike other turbine motors.
» Double-blade structure inside and out: Savonius blades are used on the inside for operation by gentle winds, while Darrieus blades are adopted on the outside for achieving high efficiency alongside the inner blades.
» The world's only product with the benefits of lift force and drag force altogether: Our turbine starts operating by gentle winds and keeps running for a long while even when there's no load because of its zero rolling resistance. It also boasts of high energy resilience when winds start blowing again.
» Minimized wind resistance: Other turbines, although it is a vertical-axis type, are susceptible to bending and damage, leading to heat error, due to a difference in the area affected by winds. By the contrary, our turbines are designed to circulate the wind flows, minimizing damage and consequent heat error.
» Less noise caused by rotation: Our turbines have to gear and coil, causing no frictions. Therefore, the coating phenomenon and noise issue caused by blades rotations are effectively addressed.
» Excellence in maintenance and structural stability: Double-jointed blade structures and anodizing finishing contribute to heightened durability and structural stability of our product.

Comparison to Other Turbines

Wind Turbine System Availability by Model

Tower-type Wind Turbine System

When there's a need for power generation system of large capacity, the tower-type wind turbine in which multiple numbers of wind turbines are connected in parallel is recommended. Once the main blades start rotating, the blades of other adjacent wind turbines automatically start rotating. This maximizes not only spatial applicability but also generation efficiency.

The researchers of the California Institute of Technology reported at the American Physical Society Annual Meeting that the dense intervals of vertical-axis wind turbines can save the space needed for installing wind turbines by the hundredths.

While the wind turbine is in the operation, the blades of other adjacent wind turbines automatically start rotating as the winds form a circle. In the meantime, the horizontal-axis wind turbine in the form of an electric fan dissipates the air when the blades of the front turbine rotate, disrupting the rotation of the blades. When the wind turbine in the far front rotates clockwise, the two turbines in the back will rotate anticlockwise. The next three turbines rotate clockwise.

Standard Tower-type

Wind Turbine System

for 10-kW modules

(30kW in total)

Applied Tower-type Wind Turbine System for 3-kW modules (40kW in total)

- Per-module power generation capacity: 10kW

- Per-module weight: 2 tons

- Module structures are produced on site.

-Transmission cost varies from the conditions of usage.

-1 module = 3kW x 3 units.

Blower (Exhaust Duct for Ventilation) Wind Turbine System

This wind turbine system installs a power generator at the entrance of a ventilator to tap into the wind coming through it. It is applicable for all types of buildings where air purification is required such as ordinary buildings, plants, subway stations, underground shopping malls, and shopping centers. In addition, a certain amount of winds can be provided through the ventilator regardless of the given wind velocity or direction, ensuring better power generation. Furthermore, the exhaust efficiency through the ventilator is also heightened via the rotating blades installed at the entrance, reducing energy consumption.

Hybrid Streetlight

Hybrid streetlights offered by Hi-Energy Korea taps into both wind power and photovoltaic power to ensure stability in securing energy sources. In addition, all types of wind sources can be converted into electrical energy regardless of its directions. Non-resistant rotation through the generator in the structure of permanent magnet of magnetic levitation boasts of effective production of electricity through not only slight wind operation but also accelerated generation.

Moreover, the magnetic method removed the mechanical noise completely, while the aluminum surface treatment and the round structure secure mechanical stability to offer even more pleasant street environment. As for the reduction in the annual carbon dioxide generation, photovoltaic streetlights experience CO2 reduction by 150 kg, while Hi-Energy Korea's hybrid streetlights witness CO2 decrease by 470 kg. Our Hybrid Streetlights have been acknowledged for the superior performance as the eco-friendly energy facility.

(Ordinary streetlights generate 195- to 615-kg carbon dioxide annually.)

Light Tower/Landscape Light

Rooftop Wind Turbine System via Upward Wind from Buildings

Applicable to apartment complexes (residential facilities)

This system utilizes the rising currents of air climbing the sides of a building and the side winds. When applied to the rooftop of an apartment building, it can be installed in a single-layer or two-layer type depending on the power generation capacity and if there's restriction over a height limit imposed on the rooftop structures.

Protruded Wind Turbine

System based on Rising Currents of Air and the Side Winds through the City Architectures

Protruded Wind Turbine System effectively utilizes the rising currents of air climbing the sides of a building and the gushes of winds generated innately from the corners of buildings.

See our Completed Wind Projects