Group items tagged

Grist has a post on new ideas for improving wind power technology, pointing to a Tyler Hamilton "Clean Break" column in the Toronto Star - Wind turbines get fancy. Solar energy sucks up a lot of research attention, partly because solar energy systems still have so much room for improvement. Wind turbines, on the other hand, have been around for over 1,000 years, and although the modern versions are vastly larger and more efficient than their ancient counterparts, the basic concept hasn't changed much. But the standard blades-on-a-horizontal-axle version of wind energy systems (as opposed to more exotic flavors like kites or blimps) may yet be poised for some big leaps forward, several of which were profiled in a recent Clean Break column.

Opportunities in the renewable energy technology sector are becoming more diverse as regulatory support extends to technologies other than wind farms, Steve Read, investment manager of the Ventus Funds, said. Read said the Ventus Funds, venture capital trusts operated by Climate Change Capital, are spreading their investments more evenly between wind farm projects and other renewable energy technologies such as land-fill gas and waste biomass.

I don't know what's been happening lately with everybody, but it seems that more and more people are trying to charge their phones or iPhones or iPods using energy imported from human movement. Remember those movies presenting slaves hundreds of years ago spinning a huge wheel to provide the emperor with water and energy? They did not do it for fun, yet nowadays there are two recent mediatized inventions that caught my eye. Curiously enough, they are being developed by two telecom operators:

It looks more sleek and futuristic (or retro-futuristic, if you're much versed in vintage SF) than other prototypes, a creature more adapted to fictional outer space than to the oceans. But something about its bulbous main compartment led us to wonder if there is enough room inside for seasteaders to muck about with nation-building. Amidst all those noisy condensers and turbine generators and navigational gears, perhaps even inspired by them, they try to formulate the mechanics of a new micro-civilization, new identities and new cultural traditions.

Technology Review has an article on advances in wind turbine technology - Better Wind Turbines. ExRo Technologies, a startup based in Vancouver, BC, has developed a new kind of generator that's well suited to harvesting energy from wind. It could lower the cost of wind turbines while increasing their power output by 50 percent. The new generator runs efficiently over a wider range of conditions than conventional generators do. When the shaft running through an ordinary generator is turning at the optimal rate, more than 90 percent of its energy can be converted into electricity. But if it speeds up or slows down, the generator's efficiency drops dramatically. This isn't a problem in conventional power plants, where the turbines turn at a steady rate, fed by a constant supply of energy from coal or some other fuel. But wind speed can vary wildly. Turbine blades that change pitch to catch more or less wind can help, as can transmissions that mediate between the spinning blades and the generator shaft. But transmissions add both manufacturing and maintenance costs, and there's a limit to how much changing the blade angle can compensate for changing winds.

New satellite measurements show that crucial sea ice in the Arctic Ocean has plummeted to its second-lowest level on record. Arctic ice always melts in summer and refreezes in winter. But more and more ice is being lost and not recovered. The National Snow and Ice Data Center in Boulder, Colorado, announced Wednesday that the extent of sea ice in the Arctic is down to 2.03 million square miles. The lowest point on record is 1.65 million square miles set last September. With about three weeks left in the melt season, the record may fall, scientists say.

ABOUT THE PANEL DISCUSSION: Companies sometimes regard sustainability as "metaphoric low-hanging fruit," says moderator Peter Senge, and reach for a few easy targets to achieve cosmetic improvements. His three panelists describe how their corporations are attempting to embrace sustainability as more than just another high-profile, low-impact initiative that "goes right into an overloaded bucket."

We can't afford to think of business as the enemy. Businesses in many cases are realizing the importance of sustainability more quickly than the public sector which too often defines its view by outdated political philosophies. This video provides a great deal to think about.

Hydrogen Garage LLC is just what it says : "a garage operation". Garage to Garage. An online business selling parts to make home made hydrogen cells, parts, circuits, etc. for the home mechanic/technical /experimenter. We do NOT sell consumer products, only parts for the genius in you. A simple add onto your existing vehicle and or gas powered generator. Might as well sell something that helps clean our car's emission, save MPG and clean up your engine and create more horsepower and help stop Global Warming from too much carbon monoxide posioning. Way better product that some of the stuff that people can sell online today. The more the exposure of "on board electrolysis" the better.

Personal wind turbines are more often invented than actually manufactured. Those that make it to the commercial stage are mostly available at several thousands of dollars. That's why it is all the more surprising that as of next September you'll be able to buy a true designer windmill for way less than that.

Wind supplied more of Britain's electricity that water for the first time last year, while power generators preferred gas to coal and nuclear output continued to decline, according to new government data. Five percent of Britain's electricity came from renewable sources in 2007, up from 4.6 percent in 2006, as more wind farms started feeding clean electricity into the network, helping cut the country's carbon emissions.

The value consumers place on goods and services often is a matter of simple economics. When demand is high and supply low, relative worth heads north. This fundamental truth from our friend Adam Smith couldn't be more relevant to the car business these days. Visit any dealership and ask how many thousands of dollars in incentives are available on trucks and SUVs collecting dust on the lot. On the flip side, the Prius hybrid's massive worldwide appeal is not only a sign of our energy-afflicted times but proof of what happens when there are more shoppers than cars.

And you thought the U.S. was getting big solar photovoltaic projects (like the one being built by SunPower for FPL, or SunEdison for Duke). But those will deliver just a little more than half of what a Godzilla-like solar PV project in Germany will soon provide. The managing director of solar builder Juwi Solar, Michael Martin, said Juwi has already built over half - or 26 MW - of what, at 40 MW, he claims will be the world's largest solar PV project, which could be completed as soon as the end of the year.

There are times in the history of our nation when our very way of life depends upon dispelling illusions and awakening to the challenge of a present danger. In such moments, we are called upon to move quickly and boldly to shake off complacency, throw aside old habits and rise, clear-eyed and alert, to the necessity of big changes. Those who, for whatever reason, refuse to do their part must either be persuaded to join the effort or asked to step aside. This is such a moment. The survival of the United States of America as we know it is at risk. And even more - if more should be required - the future of human civilization is at stake.

Alternative energy giant Horizon Wind Energy wants to trap the immense potential of wind energy. They are planning to open an Indianapolis office for developing up to four new wind farms in Indiana. It will cost them more than $2 billion. Indiana wind farms will be the largest of the Horizon's farms and the proposed site will be at Meadow Lake in White County. The company will install up to 660 turbines spread over 100,000 acres. When the project is fully operational it could produce more than 1,000 megawatts per year - enough to power 300,000 houses.

With fuel prices rising and supplies dwindling, more and more inventors are turning their creativity towards cars that work without the need for barrels of gasoline. True, there have been a number of vehicles released that run on electricity but now designers are turning to another precious resource - air. It's not a new concept, as early as the 1920s, car designers were dabbling with the idea of cars that could run off air alone - one involved cycling air through a propeller at the front of the car - but few came to fruition. Now, designers are again looking at how air can be used to power a car.

Energy Policies To Maximize Energy Security And Economic Development Hosted by the Institute for Local Self-Reliance Date/Time: January 9, 2009 8:30 am to 5:30 pm Detailed Conference Agenda Location: Buntrock Commons, St. Olaf College - Northfield, MN Hear from the experts on Renewable Energy Payments (a.k.a. feed-in tariffs): * Paul Gipe, the North American expert [more info] gives his excellent tutorial * National policy expert, Wilson Rickerson [more info] llustrates the spreading wave of feed-in tariff legislation * German energy expert, Willi Voigt, shares his experience with implementing feed-in tariffs in Germany and their stunning success

iGo Technologies provides solutions for charging up gadgets more efficiently by ditching standby power. They're debuting a few more cool looking products at the upcoming CES. Read on for a glimpse of what tech we'll get to see in just a couple weeks. Three products iGo is planning on showing off are: - iGo Laptop Charger: Charge your laptop and other devices from any standard wall outlet, including automatic shut-off and recovery to reduce vampire power. - iGo Surge Protector: An eight outlet surge protector with shut-off and recovery to reduce vampire power. - iGo Wall Outlet: A wall outlet with automatic shut-off and recovery.

While much attention on renewables in recent years has focussed on solar and wind technologies, awareness has been growing around the enormous energy generating potential of the Earth's oceans. A 2005 report from the Electric Power Research Institute stated that wave power properly and effectively harnessed, would likely have minimal environmental impact, and be much less visible on the landscape, than competing technologies. At the same time, waves possess the advantage of being more predictable than either wind or solar, which in principle makes ocean power a more reliable source of energy.

While harnessing more energy from the wind could help satisfy growing demands for electricity and reduce emissions of global-warming gases, turbulence from proposed wind farms could adversely affect the growth of crops in the surrounding countryside. Solutions to this, and other problems presented by wind farms - containing huge wind turbines, each standing taller than a 60-story building and having blades more than 300 feet long - can be found blowin' in the wind, a University of Illinois researcher says.

According to a Stanford University researcher, 'wind, water and sun beat biofuels, nuclear and coal for clean energy.' The scientist 'has conducted the first quantitative, scientific evaluation of the proposed, major, energy-related solutions by assessing not only their potential for delivering energy for electricity and vehicles, but also their impacts on global warming, human health, energy security, water supply, space requirements, wildlife, water pollution, reliability and sustainability.' Wow! The researcher found that some sources of energy were 25 to 1,000 times more polluting than the best available options. Some of his conclusions make sense, some are controversial, but read more…