We've seem some impressive wind power tech, but a new breed of small, high-power wind turbines could potentially bring efficient wind power home. Developed by an inventor named Doug Selsam, the new turbines have rotors just 14-18 inches in diameter, but can produce 200 watts in a 20MPH wind, and much more than that at higher wind speeds. The trick is using high-strength carbon-fiber materials that allow several rotors to be hooked up as one -- in strong winds a thirteen-rotor system can produce enough juice to blow out a bank of car headlights "like flashbulbs." That's pretty impressive -- especially since the system is light and balanced enough to be held up with one hand. No word on when or how we might see these hit the public, but we can see some pretty sweet applications -- laptops in the park, anyone?

[Thanks, Yocheved]

You know how we love wind turbines around here, but we love carnage even more -- so we can't get enough of this 200-foot tall Danish wind turbine shearing itself to bits after its brakes failed during a recent storm. The 10-year old windmill is the one of two different Vestas windmills to fail in Denmark in the past week -- the company is launching an investigation, but might we suggest selling tickets instead?

[Via BoingBoing]

In an ambitious scheme than even industry proponents seem skeptical of, Britain has unveiled plans to power every home in the country via off-shore wind farms by the year 2020. Right now the UK produces approximately half a gigawatt through this method of power generation, enough to provide 2% of the country's electricity, but nowhere near the 33 gigawatts called for in business secretary John Hutton's proposal. According to the British Wind Association Trade Group, while more offshore farms are always welcome, it is far more reasonable to expect a 20 gigawatt output by 2020 -- the bottleneck, apparently, is in procuring an adequate number of turbines. Another issue is the economic cost of wind power, which continues to exceed that of fossil fuel-based alternatives; luckily for the Brits, favorable exchange rates should help them pick up some American-made turbines on the cheap.

[Thanks, WebOn]

We've seen a couple innovative wind power solutions pop up, but none that claim to offer the benefits of maglev wind turbines, which use full-permanent magnets to nearly eliminate friction by "floating" the blades above the base. According to developers, the technology is capable of scaling to massive sizes, with a proposed $53M turbine able enough to replace 1000 traditional windmills and power 750 thousand homes. Additional benefits include the ability to generate power with winds as slow as three miles per hour, operational costs some 50 percent cheaper than windmills, and an estimated lifespan of 500 years. That all sounds great, but the real proof will come when these things get put to use, which may happen sooner than you'd think: Development is proceeding rapidly in both the US and China, with Chinese power company Zhongke Hengyuan Energy Technology currently building a $5M factory to produce the turbines in capacities from 400 to 5,000 watts.

If you ask a person on the street what they think about wind turbines in general terms then the reaction will in most cases be favorable. Ask what they think if someone was about to place wind turbines within direct sight of their home, and the response probably won't be one of glee. Common concerns often include the whooshing sound that regular turbines produce, as well as their divisive visual aesthetics -- some love it, some loath it. A new type of wind turbine intended to address both of these issues is Quiet Revolution's QR5 Vertical Axis Wind Turbine, or VAWT for shawt. The QR5 is smaller, quieter, and way better looking than your typical windmill, plus it should produce the equivalent of its £25,000 price tag in clean energy within 15 years or less. We're down with the futuristic design and the company's noble aims, but we feel that the QR guys should spice up the name of this particular turbine. Our suggestion? Pigeon Dicer, Mark 5.

Thanks to MIT's Paul D. Sclavounos, we might get a reprieve from the eyesore problem of windmills, while still sticking with their clean-and-cheap energy benefits. Unfortunately, hapless birds aren't going to get much of a respite. The plan is to plant these things offshore, far enough out into the water for the skinny white turbines to disappear on the horizon, but we're sure a few seagulls will be able to find those "invisible" blades all the same. The turbines can be anchored in water up to 650 deep, and can withstand even hurricane-generated waves. Another benefit of the system is the strong and steady wind out at sea, so the 90-meter turbines should be able to generate twice as much electricity in comparison to their near-shore counterparts. Count us in, we never liked seagulls too much anyways.

Even if you're not into that whole "respecting the environment" thing, how many of you homeowners out there haven't dreamed of slashing or even eliminating your electricity bills? Well a new residential windmill from a company called Southwest Windpower promises to not only help keep you green by reducing your dependency on coal-fired power plants, but to actually provide up to 90% of the juice that a typical household consumes in a year (and by typical, they aren't talking about your 5-computer, 10-monitor family). Even better, the so-called Skystream 3.7, which incorporates its controls and inverter right into the main unit, will automatically switch your house over to grid power if winds fall below 8MPH (maximum efficiency is reached at 20MPH) -- no storage batteries necessary. At around $8,500 including installation of the 35-foot-tower, the Skystream supposedly pays for itself within four to twelve years depending on local wind levels and electricity costs, and if you're really frugal with the juice, some municipalities will even allow you to sell unused output back to the power company. Just because this is fit for residential installations, though, doesn't mean that just anybody can pick one up -- Southwest recommends that you own an acre of land in an area that averages 10MPH wind speeds, and of course, that not-unobtrusive tower needs to comply with local zoning laws -- so the millions of us living in dense urban settings or gated communities will have to continue paying through the nose and destroying the environment in order to power our many gadgets.

[Via Gizmag]