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The boat tail mounted on the rear of the test truck

European tests have shown that a boat tail – a tapering protrusion mounted on the rear of a truck – leads to fuel savings of 7.5 percent. The fuel savings, which also means a cut in emissions, were realized by the boat tail dramatically reducing the drag caused by the lower-pressure effect that occurs in the wake of a vehicle.  Read More

A prototype of the 'stealth' blade developed by QinetiQ and Vestas is fitted onto a Vestas...

Plans for the installation of wind farms the world over are being delayed or abandoned due to objections from the aviation community or air defense interests. The problem is that when it comes to low flying aircraft or wind turbines, conventional radar has a bit of an identity crisis - not being able to tell the difference. Recent tests in the UK of "stealth" turbine technology could provide a solution.  Read More

Baryonyx will use both on and offshore wind farms as its main source of power

The push for more dedicated use of renewable energies has been given a boost recently by Texas startup Baryonyx Corp, which has successfully procured the lease for what will be the largest offshore wind concessions in the USA. A total of 8,000 acres of land in Dallam County and 38,000 acres in the Gulf of Mexico will power ‘Tier4’ data centers by generating a potential 3GW of energy.  Read More

A rendering showing what the street lights might look like in a typical urban street. With...

It provides light where there is darkness, it gives a sense of safety and security, but it's also a power leech. The humble street light. Thankfully, the move away from the grid is already well underway with companies like Urban Green Energy busy transforming these familiar towers of light into self sufficient beacons that harness the power of the elements - in this case, it's a hybrid solution that uses both the wind and the sun.  Read More

The word Almeisan is the Arabic name for one of the brightest stars in the sky, located in...

Dubai conjures up BIG images; not just the tallest structures, although it currently holds that crown, but also big as in flamboyant, lavish and generally larger than life. Amidst the opulence, extravagance and seemingly limitless budgets – or perhaps because of the latter – Dubai is increasingly embracing its green side. The latest building designed for the city to cross our desk has a foot squarely in both camps - the Almeisan Tower combines a delicate, soaring structure with a 600kW solar tower and passive cooling systems claimed to be almost "triple zero", which means it has zero emissions, zero energy requirements and zero waste.  Read More

The Honeywell Windgate wind turbine from EarthTronics measures less than 6 feet (1.8m) acr...

Has affordable, practical home wind power generation become a reality? The Honeywell Windgate wind turbine from EarthTronics looks like it could be a contender. Developers EarthTronics and Honeywell Corp hope the Windgate wind turbine will help meet the energy needs of homeowners and businesses, even if they are not located in prime “windy” areas. EarthTronics says the 6-foot wide, 95-pound Windgate can start to spin in breezes as low as 2mph and can create more power with less wind than other types of wind turbines.  Read More

The self-sufficient Rural Space is powered by wind and solar energy

With so many heritage-listed sites and national parks in Britain, there are tight restrictions on what can be permanently built and where. Designer Philip Crewe, however, has come up with the idea of Rural Space, a temporary living space powered by wind and solar energy, which helps people get closer to nature, in considerably more comfort than the standard tent or hostel.  Read More

The Hywind floating wind turbine is towed to its final offshore destination
 PHOTO: Øyvind...

Hywind, the 2.3MW floating offshore wind turbine being developed by Norwegian oil and gas company StatoilHydro, Siemens and Technip has now been installed and moored to the seabed off the coast of Norway. Once cables to the mainland grid have been laid, the wind turbine prototype will undergo a two year pilot which will provide valuable knowledge on how to perfect the technology and hopefully one day enable floating wind turbines to become a financially viable alternative to other energy sources.  Read More

The Orange Power Pump - by treading on a standard camping air foot-pump, the kinetic energ...

Mobile operator Orange and renewable energy specialists GotWind know they’ve hit on a good, marketable idea. The companies have joined forces for a third consecutive year to showcase their outdoor charging solution at next month's Glastonbury Festival, the United Kingdom’s largest and hippest open-air music bash. This year Orange has unveiled a mobile phone charger prototype it’s calling the Orange Power Pump. By treading on what is essentially a standard camping air foot-pump, the kinetic energy created drives a small turbine inside the Power Pump. The energy is converted into electrical current, which recharges the mobile phone. The idea is not only simple, it cleverly encourages you to dance and charge your mobile at the same time.  Read More

Magenn's MARS floating wind generator

Wind power is notoriously flighty, particularly at ground level. Most turbine-on-a-post wind powered generators operate at around 20-40% of their rated generation capacity, simply because wind is intermittent and changes direction. But a generator situated 500-1000 feet above ground level would enjoy much more consistent strong wind - which is why the Magenn MARS system makes so much sense. It's a helium-filled rotating airship that spins in the wind on the end of a variable-length tether that also acts as a power transmitter, and it's expected to operate at more like 50% of its rated capacity. Each MARS system will be cheap and portable, which will make them extremely useful in rural, camping and emergency situations. A prototype has successfully been flown in North Carolina. A great idea that makes economic sense.  Read More

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