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Green Tech

Storing energy with flying metal objects

You can store energy in chemical batteries. Pentadyne Power stores it in moving objects.

The Chatsworth, Calif.-based company has created and sells uninterruptable power supply (UPS) for data centers and large power consumers that stores energy kinetically. A 25-pound mass spins in a vacuum chamber at a high speed. When a utility needs a jolt of electricity, kinetic power is converted to electrical power. When it's not needed, the mass just spins to conserve its energy.

The company uses a relatively small mass to avoid potential mishaps (imagine what would happen if a large mass came unstuck from … Read more

Second Wind crunches data for wind turbines

Erecting wind turbines requires a lot more work than finding a site and bringing in cranes to install them.

Before construction, wind developers need to test the wind resource, which will have a significant bearing on how much power--and money--a turbine will produce.

Second Wind is a small company that has carved out a niche in "wind profiling," or gathering data about wind resources.

The Somerville, Mass.-based company on Tuesday announced that it has raised $4 million in the second round of financing from Good Energies, a renewable energy investment company.

Earlier this year, Second Wind introduced … Read more

Would you pay more for a greener car?

Consumers won't pay more for cars that would meet new, stricter emissions standards.

That was the message sent last week by Susan Docherty, Western Region general manager of General Motors, as a handful of automotive journalists (including yours truly) sat scattered at a very large table in a private room in the back of one of Santa Monica's poshest hotel restaurants during a GM-sponsored holiday dinner.

The proclamation erupted out of a somewhat heated debate with one of the print journalists at the table, sparked in part by news that a U.S. District Judge had dismissed a lawsuitRead more

Pumping DC power to the data center

Thomas Edison had it right, say the founders of start-up Validus DC Systems. Direct current is the way.

Validus on Tuesday announced that it has raised $10 million from Oak Hill Venture Partners to further develop its data center power supplies that use direct current (DC) to lower power consumption. Products are expected to be released in late January next year.

By using direct current, rather than drawing electricity from outlets that supply alternating current, data center managers can reduce their energy consumption by up to 40 percent, according to the company.

There is a growing awareness of the cost … Read more

Nanosolar 'prints' first flexible solar cells

Well-financed solar start-up Nanosolar on Tuesday said it has started shipping its flexible thin-film solar cells, meeting its own deadline and marking a milestone for alternative solar-cell materials.

On the company's blog, CEO Martin Roscheisen announced that the first megawatt of its solar panels will be used as part of a power plant in eastern Germany.

The release of Nanosolar's first products is significant because the company develops a process to print solar cells made out of CIGS, or copper indium gallium selenide, a combination of elements that many companies are pursuing as an alternative to silicon.

The … Read more

Poll: Young adults hip to green new year's goals

Many young adults are willing to make lifestyle changes in 2008 for the good of the environment--as long as the efforts are relatively easy, a consumer survey indicates. Fifty-eight percent of adults age 24 or younger plan to make a "green" new year's resolution, according to marketing firm Tiller.

Among all ages surveyed, 49 percent said they would aim to be greener next year. Older respondents were less likely to set such goals, with half of those aged 50 to 64 and 40 percent of people of retirement age claiming they would change their habits for ecological … Read more

Survey: Corporate computing expands green streak

Efforts to purchase eco-friendly and energy-efficient IT equipment have expanded notably since the spring, according to 130 companies surveyed by Forrester Research.

Some 38 percent of corporations said they take environmental concerns into account when making purchasing decisions, a jump from 25 percent surveyed in April.

The top reason for going green was slashing energy costs, cited by 55 percent of respondents. Doing the right thing for the environment was the next most popular motivation, noted by half of those surveyed. And 95 percent called environmental concerns either somewhat or very important to operations.

However, the study found that most … Read more

Climate legislation: Who gains? Who loses?

Most Americans now agree that something needs to be done to reduce our greenhouse gas emissions. Hopefully most Americans now appreciate that this is not a small, but even more so, not a simple problem. I am a big believer that the playing field for our low carbon future should start level, and the market should be structured to allow our major power and energy companies a chance to lead the way, instead of simply dishing out punishment for our combined historical choices. Carrots and sticks work well together, but sticks alone are not going to solve our global carbon … Read more

San Francisco sprouts a 'Chia' nightclub

A San Francisco nightclub installed on Monday what it's promoting as the city's first vertical garden. Several plant-filled boxes turned on their sides and bolted outside near the entrance are the first step in the Zen Compound's plans to cover the facade of the building in greenery.

"The hope is to have a living building," said Mike Zuckerman, director of sustainability at the 40,000 square foot complex. He spotted a butterfly hovering near native licorice ferns on Tuesday.

Green rooftops are in vogue in cities around the country. Hanging, wall-mounted gardens, on the other … Read more

Subway goes with a green agenda

Those little things add up, says Tony Pace, senior vice president of marketing at Subway.

The company switched from buying plastic cutlery made from polystyrene to polypropylene, he noted. The switch saves about 100,000 pounds of resin a year, which translates to 2,800 barrels of oil saved and 1,200 metric tons of carbon dioxide not ejected into the atmosphere, he said.

The chain hands out roughly 400,000 pieces of cutlery a day.

It also switched to polypropylene for its cups. That saves about 515,000 pounds of resin, or 10, barrels of oil saved.

Expect to … Read more

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