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Wind Turbines




Wind Turbines

The next generation of wind turbines has arrived....

SP POWER FARM GROUP LTD. (“SPpf”) has defined a new class of wind turbines that holds the promise of revolutionizing the way wind is harnessed to generate power.

SP POWER FARM GROUP LTD. (“SPpf”), a private Canadian company, has defined a new class of wind turbines.

The exoPOWER External Axis Wind Turbine (“EAWT”) technology consists of: a turbine housing (known as the “exoHOUSING”); a turbine wheel system housed in the exoHOUSING; and a wind power converting system for converting kinetic energy generated by the turbine wheel system into electrical energy.

The turbine wheel system includes a turbine rotor being driven to rotate circumferentially around an interior of the exoHOUSING, and a rail frame guiding a rotational movement of a turbine rotor.  The wind turbine not only allows airflow to move across and through the turbine wheel system, but also allows airflow to be directed and exhausted to maximize and control energy generation.

The wind turbine is able to efficiently convert wind power to electrical power via a turbine wheel system which allows for the load generated to be distributed across the circumference of the turbine wheel system instead of localized in the center as a traditional wind turbine.

The exoPOWER EAWT is custom engineered for site specific applications.  The technology is currently in the development phase, with SPpf having successfully proven that its prototype is capable of generating electrical power.

The exoPOWER EAWT is scalable.  It’s application is widespread, spanning from the small wind category all the way up to the big wind category.

Small Wind Category
Mid Wind Category
Big Wind Category

<1 kW to 50 kW

Turbines for appliance-type applications (e.g., cell towers) and single home and co-operative use.

Unused power can be part of Fit-In-Tariff  (“FIT”) Programs for individual users.

100 kW to 250 kW

Commercial & industrial applications of moderate energy consumption.

Roof-top and building integration.

Medium size co-operative use.

Unused power can be part of FIT Programs for co-ops.

500 kW to 3.0 MW.

Utility size applications (e.g., wind farms, heavy industrial usage).

Power generated using these sized turbines are typically fed into the electrical grid.

It’s applications are unlimited…wherever power is required, it can be produced*

*subject to adequate wind load

Medium and Big-Wind Applications of exoPOWER EAWT will be custom-engineered for site specific requirements

R&D GREEN TECH is an authorized representative of SP POWER FARM GROUP (BC) LTD. (“pfBC”).  pfBC is a private Canadian company that is responsible for the commercialization of the exoPOWER EAWT.  It has been transferred certain licenses for the manufacturing, marketing, and installation of the exoPOWER EAWT by SPpf, the sole owner of the intellectual property.

R&D GREEN TECH welcomes you to take a closer look at the exoPOWER External Axis Wind Turbine and, as authorized representatives of pfBC, invite you to contact us for more information on what we believe to be is the best-in-class wind turbine technology.

1st century A.D.

Heron of Alexandria is credited with the invention of the windmill.  He harnessed the power of the wind to power an organ. The windmill blades were attached to an axle that drove a set of pistons  up and down to provide power to the organ.

12th century A.D.

In the 12th century post windmills were built in Europe. This type of windmill was built on a vertical post and was set on a rotational post fixture so the entire machine could rotate to face the wind. These vertical windmills were usually used for grinding grains or pumping water.

19th century A.D.

In 1887 American inventor Charles Brush built the first automatically operated wind turbine. It was called a wind turbine not windmill because it was used to generate electricity.  The wind turbine weighed four tons and power a 12 kW generator.


The Giromill wind turbine is a Darrieus designed vertical axis turbine.  The Giromill turbine uses lift instead of drag and is usually built with two or three aerofoils that attach and rotate around a central axis tower. The Giromill is a low efficiency turbine because it needs strong wind speeds to start rotating.

Modern Wind Turbine

The modern wind turbine was created from years of innovation & scientific research. Today, most modern wind turbines are from the horizontal axis family and have three blades. The wind turbine blades are designed similar to airplane wings and use the “lift” from the wind to rotate.

9th century A.D.

The Persians built vertical axis windmills that were probably used to pump water or to grind corn.  The vertical sails were in cased within a set of walls with an open door in front that would guide the wind through the machine.

13th century A.D.

Tower mills were the newest design in the 13th century in Western Europe.  These windmills were built on large stone towers with the rotor and blades attached to a rotating cap that was mounted on top of the tower.  A wind vane was also fixed behind the blades to help guide the rotating cap towards the wind.


The Savonius wind turbine is a vertical axis wind turbine invented by Finnish engineer Johannes Savonius.  The Savonius turbine is a drag turbine meaning that its rotational energy comes from the actual push of the wind, and not from the aerodynamic “lift” like most other modern wind turbines.  


The Darrieus wind turbine also known as the “egg beater” turbine is a vertical axis turbine invented by French engineer Georges Jean Marie Darrieus.  The egg beater design usually comprises of two aerofoils that rotate around a vertical axis tower with an electrical generator near the bottom of the machine.

20th century A.D.

In 1941 the Smith-Putnam wind turbine became the first megawatt-sized wind turbine to be constructed.  It was a two-blade (175’ diameter) turbine built on a 120’ steel lattice tower.  It on operated for 1100 until a blade failed.

Industrial real estate created by exoTOWER installation can be utilized as required by Project Owner

Small Wind

Medium Wind

Big Wind