Greentech Media has an article on one of Dean Kamen's cleantech experiments (in this case a Stirling Engine cogeneration device) - NRG Energy Deploying Dean Kamen’s Solar-Smart In-Home Generator

Few executives are more outspoken about the threat that distributed energy poses to utilities than NRG Energy CEO David Crane, so it’s not surprising that NRG Energy plans to sell a product that is disruptive to the centralized power business model.

The company is working with Deka Research on an on-site “energy appliance,” according to NRG Energy’s corporate sustainability report. In an interview last week with The Atlantic, Crane said the device, called Beacon 10, can generate electricity from natural gas, work with a battery and rooftop solar, and provide backup in the case of a grid outage. “When there’s not enough solar, you turn on the Beacon 10. Then, ideally, the grid itself would just be the ultimate backup. It’s the coolest thing I’ve ever seen,” he said.

Deka Research is headed by Dean Kamen, a renowned inventor best known for creating the Segway transporter who has worked extensively with Stirling engines. Earlier this year at the Fortune Brainstorm Green conference, NRG Energy showed a portable Stirling engine, and Crane said that the company is working with Kamen to test 200 of the machines in homes. Kamen has already made a multi-fuel, Stirling-engine-based water purifier called the Slingshot, which Coca-Cola will distribute to rural Latin America and African villages.

A specification sheet seen by the website Energy Choice Matters indicated that the Stirling engine of Beacon 10 is capable of producing 15 kilowatts of power, can send excess energy to the grid, and is slightly larger than a washing machine. The NRGBeacon10.com website has apparently since been taken down, and an NRG representative declined to provide more details on Beacon 10.

Beacon 10 is one of a number of products NRG Energy has that are outside the typical offerings of conventional utilities. The company has developed a solar canopy and has installed EV charging stations at retail locations. It’s also one of the utilities working with Nest Labs to offer consumers a two-way thermostat.

Gizmag has an article on Dean Maken's hybrid scooter design, which uses a Stirling engine - Dean Kamen developing eco hybrid that will run on anything that burns

Dean Kamen – the multimillionaire inventor behind the Segway personal transporter – is well down the road in the development of a new bike that combines electric power and a radical generator which will allow it to burn almost any fuel.

Built around a fairly conventional battery and electric motor combination to provide the drive to the wheel, something Kamen's experience with the much-hyped Segway makes relatively easy, the radical part of the design is the inclusion of a Stirling engine to recharge the bike's battery pack. Based on technology that pre-dates the internal combustion engine by nearly a century, the Stirling engine is closer in concept to a steam engine, using external combustion, and without the need for a fuel that can be injected and burned incredibly fast inside a normal engine's combustion chamber, it can run on virtually anything that burns – opening the door to easily renewable fuels rather than relying on dwindling fossil fuel supplies.

Although the prototype bike has yet to be shown in public, unlike Kamen's Stirling-engined car which has been demonstrated several times, Kamen himself is understood to have been using the prototype to zip around his own estate.

As revealed in Kamen's own patent for the technology, the bike looks like a conventional scooter, with the Stirling engine and its fuel tank mounted under the seat, a rechargeable battery pack in the floor and a radiator in the front fairing. Although the Stirling engine's low output – one this size is unlikely to make any more than 5bhp – means it can't give the bike much performance on its own, it's able to keep the battery topped up by continuing to supply electricity even when you're not moving. The energy reserves in the battery can be used when more power is needed. And as the Stirling engine could be left running at low speed even when the bike is parked, the battery would never be likely to go flat.

Kamen has already sunk more than $50 million into his development of Stirling engine technology, using the idea for everything from bikes to cars and even to water-purifiers to be used in the developing world.

Bruce Sterling has a post on "The Segway for Water" (I'm not sure the Segway is a good comparison to use when promoting something, but whatever) - a small scale water purification unit at a low price from Segway inventor Dean Kamen. As usual, Bruce's interjections are the bits marked "(())".

More at Wired Science - it sounds like the device works in conjunction with Kamen's other new invention, a Stirling engine based power generation unit - and Red Ferret.

(((Wired Science, these guys rock. I can't wait to see what they get up to when we've got an Administration that doesn't hate, fear and attack science.)))

"There has been much buzz about the water purifying machine that Segway inventor Dean Kamen demonstrated on the Colbert Report last week (even taking on the bag of Spicy Sweet Chili Doritos that Colbert added). Everyone has been trying to find out more about his claim that "you stick a hose into anything that looks wet ...and it comes out...as perfect distilled clean water."

"So far as I can tell however, it is true..."

(((The kicker:)))

"The slingshot is a David and Goliath reference aimed at putting water and power back in the hands of the individuals."

"The most interesting comments I came across were to the effect that inventing something great is only half the problem. The other half is getting it to the people who need it in a way that works. Luckily, as Gizmodo commenter enginblue points out, if units came down to $1,000 each, this new wave of micro-lending could have people pooling money to purchase units for groups of entrepreneurs wanting to bring this to their village."

((("Village," hell! For the cost-overruns on Austin's water-treatment plant we could buy a zillion of these. If it's a matter of a thousand dollars, I'll buy one myself and give disease-free distilled water to the neighbors. I'd make the money back in lowered medical costs to my community.)))