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The SeaTwirl's vertical wind turbine (1), torus ring (2), float assembly (3) and generator...

One of the main drawbacks of wind turbines is the fact that for maximum efficiency, the power that they generate must be fed into the grid right as the wind is blowing and their blades are spinning. While that power can be stored in batteries for later use, some of it will always be lost in the process. Sweden's experimental new SeaTwirl system, however, is designed to kinetically store wind energy until it's required - it's basically a seagoing flywheel.  Read More

Carbon nanotube-reinforced polyurethane could make for lighter and more durable wind turbi...

In the effort to capture more energy from the wind, the blades of wind turbines have become bigger and bigger to the point where the diameter of the rotors can be over 100 m (328 ft). Although larger blades cover a larger area, they are also heavier, which means more wind is needed to turn the rotor. The ideal combination would be blades that are not only bigger, but also lighter and more durable. A researcher at Case Western Reserve University has built a prototype blade from materials that could provide just such a winning combination.  Read More

Proposed for the Aalborg Waterfront in Denmark, a new housing development would feature 60...

This ambitious zero-energy housing proposal is the achievement of Scandinavian architectural firm, C. F. Møller in collaboration with energy consultants, Cenergia. Proposed for the Aalborg Waterfront in Denmark, the development features 60 apartments, from 4 to 12 storeys high, all supplied with a 100 percent renewable energy source.  Read More

The Caltech Field Laboratory for Optimized Wind Energy where arrays of closely spaced vert...

Although wind power energy production in 2010 was estimated to be only about 2.5 percent of worldwide electricity usage, wind turbines are considered a mature technology with many experts suggesting that we’re approaching the theoretical limit of individual wind turbine efficiency. For this reason, researchers are now looking at new approaches to wind farm design to increase the power output of wind farms. Researchers at the California Institute of Technology (Caltech) have been conducting a field study and claim the power output of wind farms can be increased at least tenfold by optimizing the placement of turbines on a given plot of land.  Read More

How the IMPLUX might look atop a building

When most people think of wind power they think of large-scale wind farms with fields of huge three-bladed horizontal axis turbines. With such farms requiring lots of room they are generally unsuitable for placement in or even near large cities. Smaller turbines tailored for urban environments such as AeroVironment's Architectural Wind System, the Honeywell Wind Turbine and the Windspire represent a growing sector though, and the latest to catch our eye is the IMPLUX – a vertical axis turbine designed to harness the power of the wind blowing from all directions.  Read More

Vestas has revealed plans to build the largest dedicated offshore wind turbine in the worl...

Offshore wind power specialist Vestas has revealed plans to build the largest dedicated offshore wind turbine in the world. The proposed V164 would have a 7.0 MW capacity, twice that of its predecessor, the 3.0 MW V112. The awesome 164 meter (538 ft) diameter rotor would eclipse the size of the current titleholder, the prototype G10X installed by Gamesa in Spain in 2009 which has a diameter of 128 m (420 ft).  Read More

The T-box concept would be installed between railway sleepers, and would harness the wind ...

As anyone living near railway tracks will tell you, speeding trains generate quite a bit of wind as they whoosh past. Industrial designers Qian Jiang and Alessandro Leonetti Luparini have come up with a device that's installed between the sleepers on a track, and as the train passes overhead, the wind drives a turbine to generate electricity. The T-box devices could be placed along railway or subway lines, and make good use of an otherwise wasted resource.  Read More

Power Flowers could become a common sight in towns and cities

Arguments still rage on, but it's generally accepted that we need to roll out more sustainable power solutions and break away from our reliance on fuels that are going to disappear one day. As advances in solar, wave and wind technologies gather pace, Dutch design house NL Architects has been looking at ways to bring wind turbines closer to where the power they produce is needed, instead of being located on remote hillsides. Inspired by a vertical-axis turbine called Eddy, the team thinks the answer may lie in tree-like creations named Power Flowers.  Read More

Wind farm near Wadena, Indiana (Image: John Schanlaub via Flickr)

Torque vectoring is a relatively new technology that has been employed in automobile differentials, most commonly all-wheel-drive vehicles, that allows the amount of power sent to each wheel to be varied. Scientists at the Technische Universitaet Muenchen (TUM) have now adapted this technology to wind turbines, to eliminate the need for converting the alternating current produced by the turbines into direct current and back again before it is fed into the grid.  Read More

The Wind Explorer under kite power

A television host and an engineer from Germany have completed an almost 5,000 km (3,107 mile) journey across Australia in their Wind Explorer, a lightweight electric vehicle powered by the wind – not only through electricity-generating wind turbines but also using kites. The pioneering 18-day trip by Dirk Gion and Stefan Simmerer set three world records – the first time a continent has been crossed be a wind-powered vehicle, the longest overall distance covered by an exclusively wind-powered land vehicle, and the longest distance covered by such a vehicle in 36 hours.  Read More

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