Green Tech

Fisker Automotive received worrying news last week when a Karma sedan burned in a house fire in Texas. The cause is still being investigated, according to the company.

The fire started shortly after a new Karma owner parked the car in a garage, according to a report in Autoweek. A fire investigator told Autoweek that the Karma, which was not plugged in, was the origin of the fire, but the cause was not known.

Fisker released a statement saying that the electric car's battery pack was intact and "does not appear to be a contributing factor in this … Read more

City buses, streetcars, and regional rail lines all over the world run on electricity, garnered from overhead lines. Now Siemens wants to apply the same technology to long-haul trucking with its eHighway concept.

Siemens, an industrial and automotive supplier, contends that the majority of vehicle pollution comes from big diesel trucks transporting goods over many freeway and highway miles. Its eHighway would eliminate tailpipe pollution from these trucks for the majority of those miles.

On a test track in Europe, Siemens has been running trucks using its diesel-hybrid drive technology. Conductors on top of the trucks make contact with overhead … Read more

Retailer Brookstone will sell a portable fuel cell able to charge smartphones a dozen times before running out.

Fuel cell maker Lilliputian Systems today announced that Brookstone will be the first retailer to carry its portable USB power source, which will be sold under Brookstone's brand. The fuel cell device is about the size of a thick smartphone, and the lighter fluid-filled cartridges are about the same size as a cigarette lighter.

It's a big step forward both for Lilliputian Systems, a 10-year-old spin-off from the Massachusetts Institute of Technology, and for portable fuel cell technology in general. … Read more

BOSTON--Internet, meet clean tech.

A weekend hackathon here showcased the promise -- and limits -- of applying mobile and Internet software development toward efficiency. To advocates, the "cleanweb" will succeed where clean tech fell short.

The Cleanweb hackathon, held in a warehouse-turned tech incubator in South Boston, on Sunday afternoon finished up a day and a half of furious coding by about 80 programmers, with some spending the night to finish their demos.

The 16 teams presented a very varied set of applications but they have one thing in common: they all seek ways to use natural resources … Read more

Switch Lighting's LED bulbs have similar technical specs to its competitors, but the startup is counting on clever design and good looks to stand out in a crowded field.

The company plans to make its first three general-purpose light bulbs available this summer to lighting distributors and today is expected to introduce a three-way bulb and a 240-volt bulb for markets outside the U.S.

Its first bulbs are replacements for 40-watt, 60-watt, and 75-watt incandescent lamps. Costing between $40 and $50, they are primarily aimed at commercial customers. Switch Lighting is also working on a less expensive consumer-oriented … Read more

Toyota showed off its RAV4 EV, the electric version of the RAV4 compact SUV, as a concept about a year and half ago at the 2010 Los Angeles Auto Show. The wraps came off the production version of this new electric car this week, showing some speedy automobile development indeed.

More impressive is that the deal between Toyota and Tesla to develop the electric RAV4, on the heels of Toyota's decision to sell Tesla its NUMMI auto manufacturing plant, came less than two years ago. This is a car with a completely different drivetrain than that of the car on which it is based. Most model updates take longer to put into production.… Read more

Honeywell today summarily denied counterclaims in a patent infringement suit it filed against thermostat startup Nest Labs.

In a court filing, Honeywell stood by its claims that Nest infringed on its numerous patents in programmable thermostats. The suit was first filed against Nest in February.

Nest responded to the suit in April, saying that Honeywell's seemingly broad patents are "hopelessly invalid" and said Honeywell is trying to stifle innovation.

In today's filing, Honeywell fired back, saying the thermostat heavyweight intends to vigorously defend its intellectual property. The filing said Nest Labs' counter claims are "irrelevant … Read more

General Electric today introduced a 100-watt equivalent LED bulb which is the clearest example yet of how high-tech lighting has become.

The company's Energy Smart LED bulb consumes 27 watts to give off the same amount of light as a 100-watt incandescent lamp. It will be released in the first half of next year. The price has not yet been set.

GE's announcement, made at the Light Fair industry conference in Las Vegas, shows how lighting manufacturers have finally cracked one of the toughest challenges in LED lighting -- making lamps able to give off a lot of … Read more

Philips this fall will release an LED bulb as bright as a 100-watt incandescent lamp, filling out its existing LED line.

The company will add to its EnduraLED line with a lamp that gives off almost 1,700 lumens, or about the amount of light as a 100-watt incandescent, and consumes 23 watts. The product will be available this fall. Philips did not disclose the price but it is expected to be in the $40 to $50 range.

This latest EnduraLED has a color temperature is a warm yellow at 2,700 Kelvin, is dimmable, and has a color rendering … Read more