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Solar Sunday

Sunday, October 12th, 2008

Solar Sunday is my weekly roundup of renewable energy and energy efficiency news from around the web.

China’s First Zero Emissions Building

Situated in Ningbo, China, the University of Nottingham’s new Centre for Sustainable Energy Technologies (CSET) is a welcome addition to the landscape as well as the air above Zhejiang province. Inspired by Chinese lanterns and traditional wooden screens, Mario Cucinella Architects packed CSET with a variety of sustainable attributes to make it the the first zero-emissions building in China.

Located in a country that relies heavily on coal power to support a population nearing 1.5 billion, CSET’s sustainable attributes are are vigorous as its environmental curriculum. The building is powered by a large array of photovoltaic cells and geothermal energy (which cools and heats the five story floor slabs). Any additional energy collected is stored in batteries that can provide up to two week’s worth of electricity for sunless days.

CSET’s double-glass skin reduces solar radiation, and the large rooftop opening creates natural ventilation while allowing daylight to illuminate the interior spaces. The building also makes extensive use of locally sourced materials in its construction and boasts an onsite rain and gray-water recycling center.

Streetlights go Solar

The latest high power LED street lights from European leader JolietTechnology, coupled with ultra efficient photovoltaic panels offers a new generation of energy efficient, pollution free solar street lighting solutions.

The advantages of cost effective LED lighting for streets, crossings, parking areas, gardens and public areas compared to conventional sodium lamps are undeniable. Adding a photovoltaic power source offers a new dimension.

The new ‘Cleanstreet’ solar LED street light from Joliet Technology is an integrated mast head fitting which employs two 130Wp photovoltaic modules and a electronic controller to charge batteries which operate the 56W LED lamp unit. The advanced system controller offers a night/day sensor for automatic switching.

The Future of Hydrogen is in Corn

The next alternative fuel in a vehicle’s tank might be nothing more than gas with a little help from corn. However, instead of the usual petroleum-based fuel, this gas will be hydrogen, and the corn will be in the form of corncob-charcoaled briquettes. To further develop this alternative fuel concept, researchers at the University of Missouri and Midwest Research Institute (MRI) were recently awarded a three-year, $1.9 million grant from the U.S. Department of Energy (DOE) to continue studying a solution to hydrogen storage in vehicles.

“Developmental hydrogen vehicles exist today but current designs require large, bulky tanks of compressed hydrogen gas to hold the fuel,” said Peter Pfeifer, professor and chair of the Department of Physics in the MU College of Arts and Science. “The tanks also have a relatively small range, only holding enough fuel to travel up to 200 miles. We will be working on reducing the size and weight of the tank and increasing the storage capacity by developing storage materials that hold hydrogen at a much lower pressure than the current high-pressure tanks. The new tanks will store hydrogen on the surface of appropriately engineered carbons.”

The Future is Organic

On a bank of the Mohawk River, a windowless industrial building of corrugated steel hides something that could make floor lamps, bedside lamps, wall sconces and nearly every other household lamp obsolete. It’s a machine that prints lights.

The size of a semitrailer, it coats an 8-inch wide plastic film with chemicals, then seals them with a layer of metal foil. Apply electric current to the resulting sheet, and it lights up with a blue-white glow.

You could tack that sheet to a wall, wrap it around a pillar or even take a translucent version and tape it to your windows. Unlike practically every other source of lighting, you wouldn’t need a lamp or conventional fixture for these sheets, though you would need to plug them into an outlet.

The sheets owe their luminance to compounds known as organic light-emitting diodes, or OLEDs. While there are plenty of problems to be worked out with the technology, it’s not the dream of a wild-eyed startup.

OLEDs are beginning to be used in TVs and cell-phone displays, and big names like Siemens and Philips are throwing their weight behind the technology to make it a lighting source as well. The OLED printer was made by General Electric Co. on its sprawling research campus here in upstate New York. It’s not far from where a GE physicist figured out a practical way to use tungsten metal as the filament in a regular light bulb. That’s still used today, nearly a century later.

The invention of the incandescent bulb created the pattern for home lighting: Our light sources are small and bright. Maybe there are a few in the center of the ceiling, and a few in the corners of the room. Because they’re too bright to look at, they need to be reflected and diffused with lamp shades and frosted glass.

OLEDs could overturn all that, with broad, diffuse light sources bathing rooms in a gentle glow. Photographers go to great lengths to diffuse the illumination they use when shooting portraits, because they know we look our best in soft light.

The big glowing sheets could also make light sources out of everyday things. GE imagines putting OLEDs on the inside of window blinds – pull them down, light them up, and you have light streaming from the window, even at night. You could even make OLED wallpaper, since the material is flexible.

Paris Triangulates Green Architecture

Recently Herzog & de Meuron revealed Le Project Triangle, an incredible structure that will rise 200 meters from the Porte de Versailles in Paris. The stunning skyscraper will feature a profile so slim that it casts virtually no shadow, and its orientation will be optimized to take advantage of both solar and wind power. Paris’ new pyramid will be the first high-rise to be approved for construction is the city’s center since 1977, thanks to the recent lifting of a 31-year-old ban established by the previous Mayor of paris, Jacques Chirac.

The Real Cost of Renewables

As utility costs mount ever higher, Americans now have real options to take home energy matters into their own hands with “green” systems that can pay for themselves in as little as a few years.

Among the choices: wind, solar, geothermal and a “microhydro” option that is potentially cheaper than a year’s tuition at many state colleges.

Choosing the do-it-yourself route can offer the freedom of going partially or totally off the grid. And, if the energy generated exceeds your actual usage, you can even sell the excess juice to your utility company. But none of this is free.

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Solar Sunday

Sunday, October 5th, 2008

Solar Sunday is my weekly roundup of renewable energy and energy efficiency news from around the web.

The Future of Wind is in the Waves

In South Korea, wind power would be a likely resource to help the world’s tenth largest energy consumer meet government goals to lower fossil fuel dependency through greater investment in renewable energy.

Yet efforts to build wind turbines in South Korea have met fierce opposition, even among environmentalists, due to the lack of open land in the densely populated country. Only about 100 megawatts (MW) of wind power are installed nationwide despite plentiful wind resources and government price controls that keep renewable power competitive with traditional energy sources.

The solution might be found off the Korean peninsula’s shores, and South Korea is not alone. As more countries seek to increase their renewable energy ratios, many consider off-shore wind a potential solution to provide clean energy without affecting local landscapes and communities.

My Coffee Solves Climate Change – Its not just pretentious any more

Chalk up another environmental benefit for shade-grown Latin American coffee: University of Michigan researchers say the technique will provide a buffer against the ravages of climate change in the coming decades.

Over the last three decades, many Latin American coffee farmers have abandoned traditional shade-growing techniques, in which the plants are grown beneath a diverse canopy of trees. In an effort to increase production, much of the acreage has been converted to “sun coffee,” which involves thinning or removing the canopy.

Shade-grown farms boost biodiversity by providing a haven for birds and other animals. They also require far less synthetic fertilizer, pesticides and herbicides than sun-coffee plantations.

In the October edition of the journal BioScience, three U-M researchers say shade-growing also shields coffee plants during extreme weather events, such as droughts and severe storms. Climate models predict that extreme weather events will become increasingly common in the coming decades, as the levels of heat-trapping carbon dioxide gas continue to mount.

The U-M scientists warn Latin American farmers of the risks tied to “coffee-intensification programs”—a package of technologies that includes the thinning of canopies and the use of high-yield coffee strains that grow best in direct sunlight—and urge them to consider the greener alternative: shade-grown coffee.

“This is a warning against the continuation of this trend toward more intensive systems,” said Ivette Perfecto of the U-M School of Natural Resources and Environment, one of the authors. “Shaded coffee is ideal because it will buffer the system from climate change while protecting biodiversity.”

Racing for the Solar Gold

Africa’s first-ever solar-powered car race is underway in South Africa to raise awareness about alternative energy and promote science and technology, organisers said Wednesday.

Local teams are competing against racers from India and Japan in the two-week South African Solar Challenge, which aims to encourage students to study engineering, a field in which the country faces huge skills shortage.

“Promoting science and technology, that is the main focus. If we can convince another 10 people in our country to become engineers, it could be a radical improvement to our economy,” said organiser Winstone Jordaan.

The group also hopes to promote alternative energy and green technology.

Solar Gets a Break, a Tax Break That Is

America’s solar-energy enthusiasts could soon expect bigger green cheques in the mail. Both chambers of Congress passed bills last week granting a long-term extension – and expansion – to commercial and residential tax credits for solar power installations.

The legislation extends a 30 per cent rebate on the installation of solar technologies, including photovoltaic panels and solar water-heating systems. It also does away with the current $2000 cap in rebates for residential systems.

The extension will have a major impact on the adoption of solar power, according to a study by an independent firm called Navigant Consulting. It found that by 2016, the total amount of installed solar in the US would be more than three times as great with the extension than without it.

New York Greens Its Skyline

After four years of construction the world’s most sustainable skyscraper is nearly completed! Situated at One Bryant park in Midtown Manhattan, the crystalline structure will be the first high-rise to receive LEED Platinum certification. Designed for Bank of America by Cook+Fox Architects and Gensler and developed by The Durst Organization, the luminous spire will introduce a dose of levity to New York’s skyline while incorporating an excellent assortment of sustainable strategies.

Civic Pride Goes Green

For the past several years, the city of San Francisco has made strident efforts push forward and transform itself into the greenest city in the United States. Taking this goal one step further, Mayor Gavin Newsom recently announced an incredible plan to transform the city’s Civic Center into a sustainable resource district”. San Francisco’s renewed green heart will feature solar panels, wind turbines, and living roofs, reducing the city’s carbon footprint by 2,225 tons – the equivalent of 1,286 San Francisco households!

It has been said that the green economy is the next big thing, and San Francisco’s new Civic Center will meet the need for greener developments by employing a host of sustainable strategies. Wind turbines and solar panels will reduce the district’s energy consumption by 33%, and water efficient fixtures, and a water reclamation program will reduce potable water usage by 80% and wastewater discharge by 45%.

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Solar Sunday

Sunday, September 28th, 2008

Solar Sunday is my weekly roundup of renewable energy and energy efficiency news from around the web.

Street Art (Literally)

Graffiti meets environmental and social activism in Peter Gibson (a.k.a. Roadsworth)’s literal take on street art. Frustrated with the lack of safety provided for cyclists in today’s cities, the artist began (illegally) spray painting extra bike lanes onto the streets of Montreal in 2001. It wasn’t long before he began to branch out and address other civic and environmental issues through his cutting brand of creative imagery. Intended to address many of the confining conditions of living in an urban environment, Peter Gibson’s work treats these topics with a sort of wry humor that doesn’t dull their urgent message.

Financial Meltdowns, Bailouts, and Clean Energy

In the wake of the financial meltdown, some have wondered about about the broader implications of the disappearance of Lehman Brothers’ carbon trading desk. And the answer to that question, at least, is easy: there are no broader implications to the disappearance of Lehman Brothers’ carbon trading desk.

This is true for a variety of reasons, not least among them that Lehman Brothers was a small player in the carbon markets. The center of gravity in the carbon-trading world is in Europe. Beyond that, the carbon market itself is just one corner of the energy finance universe. So Lehman is a corner of a corner, and anyway the disappearance of a single trading desk is nothing really to fret over.

A trickier question is what affect the broader issues in the financial markets have for the development of clean energy. And, well, it’s hard to say, as all sorts of countervailing forces are at work.

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Portable Solar

The Solar Stik™ is a small-scale energy generator that is capable of providing clean, green energy wherever it is needed most. The versatile system takes advantage of both solar and wind turbine technology and is quick to set up, making it perfect for applications ranging from boating and recreation to providing emergency relief and humanitarian aid.

Subscription Based Fuel – The Future is Electric

Agassi dealt with the battery issue by simply swatting it away. Previous approaches relied on a traditional manufacturing formula: We make the cars, you buy them. Agassi reimagined the entire automotive ecosystem by proposing a new concept he called the Electric Recharge Grid Operator. It was an unorthodox mashup of the automotive and mobile phone industries. Instead of gas stations on every corner, the ERGO would blanket a country with a network of “smart” charge spots. Drivers could plug in anywhere, anytime, and would subscribe to a specific plan—unlimited miles, a maximum number of miles each month, or pay as you go—all for less than the equivalent cost for gas. They’d buy their car from the operator, who would offer steep discounts, perhaps even give the cars away. The profit would come from selling electricity—the minutes.

There would be plugs in homes, offices, shopping malls. And when customers couldn’t wait to “fill up,” they’d go to battery exchange stations where they would pull into car-wash-like sheds, and in a few minutes, a hydraulic lift would swap the depleted battery with a fresh one. Drivers wouldn’t pay a penny extra: The ERGO would own the battery.

Berkeley Goes Solar

Berkeley is expected to make a major leap forward Tuesday in its first-in-the-nation plan to allow homeowners to pay for solar energy systems through their property taxes.

The City Council is slated to approve a new tax district that residents could join voluntarily to finance solar energy systems for their homes. The city would reimburse the homeowner for the installation and material costs, and the homeowner would pay back the money at a fixed rate over 20 years. The advantages for homeowners are that the city can borrow money at a lower interest rate than an individual can and that the tax program would stay with the house if the homeowner sells.

High Efficiency Solar Cells Just Got Cheaper

University of Utah engineers devised a new way to slice thin wafers of the chemical element germanium for use in the most efficient type of solar power cells. They say the new method should lower the cost of such cells by reducing the waste and breakage of the brittle semiconductor.

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Solar Sunday

Sunday, September 14th, 2008

Solar Sunday is my weekly roundup of renewable energy and energy efficiency news from around the web.

High Tide for Tidal Power

Underwater turbines that harvest tidal currents have already become an established technology in the world of clean energy. So in order to push the frontier further, a group of engineers at Oxford have been tinkering away on a design that promises to be even more powerful and efficient. The group recently introduced an innovative Transverse Horizontal Axis Water Turbine that will not only collect more energy but require 60% lower manufacturing costs and 40% lower maintenance costs.

Germany Cleans Up Its Coal

Vattenfall’s CO2-free power plant in the eastern German town of Schwarze Pumpe. One of Europe’s biggest power companies inaugurates on Tuesday a pilot project using a technology that it is presenting as a huge potential breakthrough in the fight against climate change

One of Europe’s biggest power companies inaugurates on Tuesday a pilot project using a technology that it is presenting as a huge potential breakthrough in the fight against climate change.
But green campaigners have denounced the project as a cosmetic operation that does not really address the problem of global warming.

At the site of the massive “Schwarze Pumpe” (“Black Pump”) power station in the old East Germany, Vattenfall wants to the new method to allow it continue burning coal — but with radically reduced emissions.

To do so, the Swedish firm is using Carbon Capture and Storage, or CCS for short, which captures the greenhouse gases produced when fossil fuels are combusted.

This prevents the greenhouse gases escaping into the Earth’s atmosphere and contributing to global warming.

This Just In: The Sun provides energy and helps grow crops

A new breed of solar tower may soon be sprouting up in Namibia, providing the nation with a carbon-free source of electricity and food during the day and night. At one and a half kilometers tall and 280 meters wide, these massive solar updraft towers could potentially produce 400MW of energy each – enough to power Windhoek, the nation’s capital. Proposed by intellectual property company Hahn & Hahn, the towers generate energy by forcing heated air through a shaft lined with wind turbines. Additionally, the base of each tower will function as a 37 square km greenhouse where crops can be grown.

New Developments In Ethanol Production

Genetically engineered bacteria could make cellulosic ethanol cheaper to manufacture, researchers report. The finding could unlock more energy from the waste products of farming and forestry.

Ethanol from cellulose, the kind of sugar in cornstalks and sawdust, is being promoted as an environmentally friendly alternative to fossil fuels, with the advantage that it does not use food crops such as corn as raw materials.

The genetically engineered bacteria are able to ferment cellulose to produce ethanol more efficiently than current methods, says Lee Lynd of Dartmouth College, New Hampshire, an author of the study.

Naturally occurring bacteria can also ferment cellulose, but they do it at lower temperatures that require the use of an expensive enzyme called cellulase.

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Solar Sunday

Sunday, September 7th, 2008

Solar Sunday is my weekly roundup of renewable energy and energy efficiency news from around the web.

Repurposing Desertification

Recently a trio of entrepreneurs announced an incredible solution for the world’s resource problems: turn the Sahara desert into a source for food, water, and energy. The Sahara Forest Project (.PDF) is a solution that combines seemingly disparate technologies – Concentrated solar power and Seawater Greenhouses – and turns them into a mean, green super-massive biomachine. The elegant system could potentially produce enough energy for all of Africa and Europe while turning one of the world’s most inhospitable regions into a flourishing oasis.

The Sahara Forest Project is the brainchild of Charlie Paton, Michael Pawlyn and Bill Watts. The project aims to provide a source of renewable energy, food and water to desert regions around the world by taking a number of proven technologies and merging them into a system that works holistically to do its work. It’s an exciting synergy, as both Seawater greenhouses and concentrated solar power technologies are perfectly suited to work in hot, dry climates.

A Seawater Greenhouse converts sea water into fresh water using nothing more than the sun’s rays. It does this by running air through a structure whose walls are infused with cold sea water. As air enters it is immediately cooled, humidified, and then condensed into fresh water by sunlight.

Concentrated solar power is a technology that utilizes thousands of mirrors to focus sunlight upon a water boiler, heating it to over 1,000 degrees fahrenheit. This generates steam, which in turn drives a turbine to produce energy.

The Sahara Forest Project also has the ability to provide for agricultural growth and development in inhospitable arid regions. Fresh water produced by the Seawater Greenhouses can be used to grow a crops such jathropha, which can easily be turned into biofuel.

Shipping goes Solar

The race to go green has taken to the high seas with two Japanese companies saying they will begin work on the world’s first ship to have propulsion engines partially powered by solar energy.

Japan’s biggest shipping line Nippon Yusen KK and Nippon Oil Corp said solar panels capable of generating 40 kilowatts of electricity each would be placed on top of a 60,000-tonne car carrier to be used by Toyota Motor Corp.

Bloomberg cleans up his energy act

Bloomberg said he is determined to keep the city’s energy usage at or near its current level even as the population grows. But the city has to increase production of clean energy, he said.

“I believe that we’ve got to be willing to do what some other nations — such as France — have already done, and increase our capacity of safe and clean nuclear-generated power,” he said.

Clean energy projects could also “draw power from the tides of the Hudson and East Rivers — something we’re already doing on a pilot basis,” he said.

Bloomberg proposed increasing rooftop solar power production, “which we’ve estimated could meet nearly 20 percent of the city’s need for electricity.”

Companies may also “want to put windfarms atop our bridges and skyscrapers, or use the enormous potential of powerful off-shore winds miles out in the Atlantic Ocean, where turbines could generate roughly twice the energy that land-based windfarms can,” he said.

Sunny California goes Solar

As the United States’ renewable energy sector grows by leaps and bounds, Pacific Gas & Electric recently announced plans for two gigantic photovoltaic plants in California. The solar installations will be constructed by Sunpower and Optisolar, whose 550 Megawatt plant will best the current proposed largest solar installation in the nation by 50 megawatts. The combined output of both plants will total 800 megawatts – enough to power 239,000 homes!

Moon Powered Earth

The moon is once again a popular destination, as several space-faring nations are talking about setting up bases there. One reason would be to mine fuel for future fusion reactors.

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Solar Sunday

Sunday, August 10th, 2008

Solar Sunday is my weekly roundup of renewable energy and energy efficiency news from around the web.

Solar Speeds Up

Several major U.S. utility companies may accelerate plans to integrate solar power into their electricity mix following a fact-finding trip to Germany.

Twenty-three electric utilities were represented on the trip to Germany, the world’s leading producer and installer of photovoltaic (PV) solar cells. All of them may now advance solar projects in the United States, a trip leader said, further expanding a growing solar market.

“Every single utility would decrease the time they said it would be before solar would be a significant part of their utility mix,” said Julia Hamm, the executive director of the Solar Electric Power Association, which organized the trip, covered some participants’ travel expenses, and conducted a poll on solar power upon the trip’s conclusion.

San Francisco implements a Graceful Solar Project

Taking a cue from eco-friendly skyscrapers and cars, religious places have started adopting sustainable technologies in the right earnest. The latest to join the green bandwagon is San Francisco’s Grace Cathedral. The San Francisco landmark will install a solar photovoltaic power system to meet its energy requirements, bringing yet another green idea to boost the city’s eco credentials.

The state-of-the-art photovoltaic system would be designed and supplied by SolarCity, a company with a vast experience of solar system design and installation. A partnership between the cathedral and Pacific Gas and Electric (PG&E) would be instrumental in financing the entire project. The Pacific Gas and Electric would provide $65,000 for the purchase and installation of the photovoltaic. It was the hard work of Reverend Canon Sally Bingham, the president of California Interfaith Power and Light that initiated the deal between Grace Cathedral and PG&E.

Wind (power) changes direction

If we told you that a free-flying kite could provide enough energy to power your house, you might consider us crazy. How about all the homes on your block, or even an entire city? Scientists at Delft University of Technology in the Netherlands recently tested just such a technology, tethering a 10 square meter kite to a generator to produce 10 kilowatts of power (enough energy for 10 homes). They are currently planning to scale the experiment with a 50 kilowatt kite and a 100 megawatt array called the Laddermill that could potentially power 100,000 homes!

Next-Gen Solar is more than meets the eye

Today’s solar cells absorb only visible light, wasting the infrared that makes up half of the Sun’s output that reaches Earth. But a new material developed in Spain can absorb infrared too, and should make it possible to hike the power solar cells can produce, say researchers.

Conventional solar cells are based on a semiconductor such as silicon. But their inability to soak up infrared gives them a theoretical absorption limit of just over 40% of solar energy. In practice, they only absorb about 30%.

The new material, though, can harness both visible and infrared photons, so it has a theoretical maximum efficiency of 63%, it creators say, and should give significantly better real-world performance.

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Solar Sunday

Sunday, July 13th, 2008

Solar Sunday is my weekly roundup of renewable energy and energy efficiency news from around the web

MIT goes Solar

There are many forms of solar power technology. Today the most dominant is photo-voltaics, which comprise the traditional solar panels that come to mind when one thinks of solar power. However, there are other promising ways of capturing the sun’s energy that are merely less developed.

Among these is a parabolic collector. A parabolic collector consists of an array of mirrors focused on a singular point, which they heat to a high temperature. By placing water or another liquid at the collector, energy can be stored in the form of a phase transformation, and later harvested through a turbine generator.

However, parabolic collectors are still a relatively new field of research. Their true potential remains relatively unknown. A glimpse of it was provided by a research team at MIT, which developed a new parabolic collector design, which will blow away current solar power designs in terms of efficiency.

The MIT team believes that their lightweight, inexpensive device holds the promise of revolutionizing the power industry and providing solar power to even remote regions.

Windows go Solar

Harvesting sunlight before turning it into electricity could become easier thanks to an exotic organic dye developed in the US.

Coated onto an ordinary sheet of glass, the dye traps light inside the glass allowing it to be channelled to photovoltaic cells placed along the edges of the sheet.

The technique, say its inventors, could turn up to 20% of incident light into electricity at a fraction of the cost of conventional photovoltaic cells.

One way to reduce the cost of photovoltaic power is to focus light from a large area onto a small cell. In that way, a small cell can harvest light from a larger area. But the collecting optics must track the Sun’s path across the sky, requiring expensive machinery and control systems.

The dye-covered glass works differently. The dye molecules absorb sunlight over a wide range of visible wavelengths and then emit light at a longer wavelength.

Vancouver wins the Sustainable Olympics

Seems like everywhere we turn these days there’s green news on the Olympic front. We’ve written about the London 2012 Olympics stadium and Beijing’s Olympic Stadium. And now, even as the 2008 Summer Games have yet to start, the 2010 Winter Olympics are making headlines with the intent to become the green envy of eco-minded Olympic planning committees everywhere. The 2010 Winter Olympics Athletes’ Village will be built to a remarkably high level of sustainability and meet the LEED standards.

Solar Temples and Sustainable Religion

Spirituality seems to be taking a green course. The world’s largest solar kitchen has been installed by the Brahma Kumaris World Spiritual University and Academy for a Better World. And now a Hindu religious and cultural center in California has taken significant steps towards sustainability including running on solar power, reducing energy consumption and a plethora of planting trees. Currently under construction, this religious meeting place is being built as a place of love, peace and harmony, and protecting the environment is part of the vision.

BAPS Shri Swaminarayan Mandir and Cultural Center is scheduled to open in the summer of 2008, under the aegis of the BAPS organization. Bochasanwasi Shri Akshar Purushottam Swaminarayan Sanstha (BAPS) is a large socio-spiritual Hindu organization, with 3,300 centers and 55,000 volunteers worldwide. The organization attempts to address spiritual, moral and social challenges and issues faced by the world. And, the center is poised to set another wonderful example of sustainability by a religious organization.

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Solar Sunday

Sunday, July 6th, 2008

Solar Sunday is my weekly roundup of renewable energy and energy efficiency news from around the web.

Solar is so Political

The world of solar energy has been tumultuous of late in the United States: the BLM essentially bans solar power projects on public lands, then reverses its decision because of public outcry. Not to mention the inaction in the Senate on one set of renewable energy legislation, and the action in the House on another. Here’s another twist in the road of clean energy promotion.

Ten Million Solar Roofs In Ten Years
U.S. Senator Bernie Sanders (I-VT) has introduced a new bill into the Senate to help ease the cost for homeowners wanting to install solar panels. The 10 Million Solar Roofs Act of 2008 will offer rebates for up to half the installation costs of solar photovoltaic systems, and would be in place for the next ten years. In addition to private homes and businesses, non-profit organizations, and state and local governments would be eligible for the rebates.

TV Goes Solar

For the 1.6 billion people living in areas without utility-supplied electricity, Sharp has designed a TV that can get 100% of its power from the sun. The company plans to exhibit the 26-inch LCD prototype at the Hokkaido Toyako Summit, or G8 Summit, in Hokkaido, Japan, on July 7-9.

The TV uses about one-fourth the power and has about one-third the annual energy consumption of a conventional CRT TV with the same screen size. Compared to today´s LCD TVs, the low-power prototype uses about one-third the power, and about one-half the annual energy consumption.

This extremely low power consumption allows the TV to be powered from one of Sharp´s triple-junction thin-film solar cell modules, with a surface area of about the same size as the LCD screen. The company plans to market the TV and solar energy system as a combination pair.

Solar Sails – The Future is Now

IT’S an idea that has been plagued by misfortune. Now, proponents of technology that seeks to propel spacecraft using the pressure exerted by photons from the sun on thin “solar sails” look set for another chance to get their idea off the ground.

Missions by the US non-profit Planetary Society to test solar sail technology failed in 2001 and 2005, because the rockets needed to get them into space malfunctioned. Now they look set for a comeback as early as 29 July, when a tiny NASA spacecraft called NanoSail-D is scheduled to go into Earth orbit.

The aim is to demonstrate the feasibility of deploying sails in orbit. The spacecraft will unfurl four 3-metre-wide sails made of plastic film coated with aluminium. In addition to feeling pressure from sunlight, it is hoped that the sails will experience a slight drag from Earth’s outer atmosphere. Similar sails could one day be used to bring normal satellites back to Earth after their missions, reducing orbital clutter.

The Sexiest Car EVER

Solar Power, good sense and good cents

Solar energy is clean energy’s rising star, leading the pack in renewable energy investments last year. The Solar Energy Industries Association ( SEIA) reports that 254 megawatts of photovoltaic and concentrating solar power were installed in 2007. The solar energy sector has grown substantially over the past 25 years. At the same time, some investors have also seen substantial growth in their solar-related investments.

Visit the Prospectus Ordering Center”Solar energy equipment can be deployed to create power in several ways, thus one can diversify investment within the sector,” said Monique Hanis, director of communications at SEIA.

Solar is experiencing growing support from the local, state, and federal governments. New Jersey, Florida, Maryland, New York, Nevada, North Carolina, Washington, and New Mexico have all increased their solar energy incentive programs. Other states have passed laws dictating that more energy be from renewable sources. California has mandated that utilities generate 20% of their energy from renewables by 2010 with that figure rising to 33% by 2017.

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Solar Sunday

Sunday, June 22nd, 2008

Solar Sunday is my weekly roundup of renewable energy and energy efficiency news from around the web.

Germany Goes Solar, one town at a time

The times they are a-changin’. The bucolic skylines of tiled roofs which define cities in Germany could soon be sporting a new look: solar.

If the Marburg City Council gets its way, Marburg will be the first city in Germany to legally require solar collectors on rooftops of private and commercial buildings. The goal of Fritz Kahle, the Green Mayor of Marburg:
No south-facing roof shall be left unused.

San Francisco follows suit, a little more conservatively

San Francisco has made solar energy a top priority with the passage of the Solar Energy Initiative Program – the largest solar energy subsidy program of any city in the United States. An annual budget of $3 million dollars will help create incentives for individuals and businesses to install solar photovoltaics systems with a $3,000 to $6,000 rebate available to individuals and a $10,000 rebate for businesses. On par with statewide programs, San Francisco’s Solar Energy Initiative Program is poised to make solar installations permanent fixtures in the city’s more sustainable skyline.

Dance goes Green

Are you ready for it–the first eco-nightclub in the UK is about to hit town. While the idea of clubbing may seem alien to some, doing it environmentally might give new meaning to a night out that goes until 4 a.m. Where to start–at the door–no entry until you sign a pledge promising to work towards stopping climate change. Then free entry to those who can prove they got there by foot, bike or public transport. Once inside, organic drinks will be served in polycarbon cups and there will be recycled water in the lavatories.

Here’s the very cool part: the dance floor will be capable of generating 60% of the building’s electricity. The technology involves building a sprung floor and power generating blocks. The blocks are made of piezoelectric crystals which produce current when subjected to pressure. Dancers dance, blocks are squeezed and the current is fed into batteries used to electrify the nightclub. Don’t laugh, it is already being done in Rotterdam, Holland. It’s part of the programme for a new climate change organisation Club4Climate, set up by an enthusiastic entrepreneur who wants to open more eco-clubs in New York, Cape Town and Rio. Its motto: “All you have to do is dance to save the world”.

Exciting advancements in wind power

Amid veritable fields of wind turbine options the Broadstar AeroCam stands out with an innovative design that packs a powerful turbine into a compact form factor. Constructed to spin on a horizontal axis, the micro-turbine’s multiple aerodynamic blades cut a profile similar to a water wheel and allow it to intuitively track the path of the wind as it rotates. The turbine is the industry’s first to shatter the $1/watt cost barrier, and Broadstar aims to make its AeroCam turbines a go-to option for rural, urban, and wind farm in-fill applications.

Unless you were confused, walking is better for the environment than driving

Walking is 12 times better for the climate than driving.

In case you missed it, there was a bit of a kerfuffle in the blogosphere a few months back, concerning the climate impacts of walking vs. driving. Apparently, some folks — New York Times columnist and blogger John Tierney in particular — were spreading the claim that a pleasant stroll to the store might actually release more GHGs than getting behind the wheel. Other bloggers picked up the meme, including one post with the headline: “Be Green: Drive.”

Water goes solar

As the planet heats up and our resources stretch to accommodate a skyrocketing population, it has become clear that water will be a hotly contested commodity in the coming years – some are even calling it the “new oil”. Charles Paton has endeavored to meet this challenge with his Seawater Greenhouse which takes a low-cost, low-energy, carbon-neutral approach to desalination. Recently he’s been working with Eden Project and Grimshaw Architects to create a gorgeous sweeping Teatro Del Agua. The design will incorporate Paton’s remarkable desalination method with a publicly accessible venue for the performing arts, once again focusing our societies around the common element that sustains them.

Solar soon to reach economic parity with other fuel sources

Last week we reported on how wind energy was becoming more cost competitive in Spain. On the heels of that comes a new report about how solar generated electricity may reach parity with fossil fuel-generated power in a short time.

The Utility Solar Assessment Study concludes that 2015 is the year where the practical and symbolic tipping point will be reached. Currently electricity from solar power costs 15-32 cents/kWh, is expected to decline to 8-18 cents/kWh by 2015, and continue falling to 4-8 cents/kWh by 2025, the report claims.

The Chinese are a bunch of air-heads

It may come as a surprise, considering the how much comes out about China’s environmental woes, but China has the fifth largest installed wind capacity in the world: just over 6 gigawatts. In the next two years this is planned to expand to 10 GW, though according to an article at Renewable Energy World the pace of expansion is so brisk that 2010 could bring 20-27 GW of installed capacity.

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Solar Sunday

Sunday, June 15th, 2008

Solar Sunday is my weekly roundup of renewable energy and energy efficiency news from around the web.

California goes Bio-Solar

One oft-heard, if rather feeble, critique of solar power goes something like, “what happens when the sun isn’t shining? You’ve got to have some other power source available to come online to take up the slack.” Fair enough. Even in the sunniest places there still is night, there still can be rain or dust storms which cause the panels to become so dirty that capacity is reduced. Pacific Gas & Electric is addressing this concern with two new solar thermal-biomass hybrid power plants.

Renewable hybrid technology from Portugal
PG&E announced yesterday that it will be contracting with Portuguese manufacturer Martifer to build two plants near Coalinga, California with a total capacity of 106.8 MW. It is expected that the projects will supply enough power for 75,000 homes in northern and central California.

Solar Houses made out of fabric ! ! !

If architect Sheila Kennedy gets her way, textiles will soon be able to take the sun’s energy and turn it into electricity. Kennedy is an expert in the integration of solar cell technology in architecture. And, her team from KVA Matx has designed the Soft House, a structure that can create close to 16,000 watt-hours of electricity by transforming household curtains into flexible, semi-transparent, solar collectors.

Queen Elizabeth is an Air-Head

The Crown Estate of England knows which way the wind blows and has decided to acquire the prototype of the world’s biggest wind turbine, Clipper’s 7.5 megawatt MBE turbine, also known as the Britannia (pictured above is Clipper’s Liberty model, which produces 2.5 megawatt).

The previous record was held by the Enercon E-126 wind turbine which is rated at 6 megawatt (pictured below), but can produce around 7 in real world conditions. While the Enercon is land-based, the Britannia will be located in deep waters near the UK. This makes sense because the marine interests of The Crown Estate include almost the entire UK territorial seabed out to 12 nautical miles , about 55% of the UK’s coastal foreshore, and rights to lease seabed for the generation of renewable energy on the continental shelf within the Renewable Energy Zone which extends out to approximately 200 nautical miles..

Chicago gets some Spanish Sun

Chicago’s city skyline is about to be graced by a stunning new super-structure that will rise above its shore like a helical seashell. Designed by Spanish architect Santiago Calatrava, the 2000 foot Chicago Spire will be the world’s second tallest building upon its completion in 2011. The halcyon monolith is beautiful example of biomimicry, taking cues from the spiraling structure of the nautilus. It’s an iconic spire with a timeless form that will take strong future-forward steps with a projected LEED gold rating.

Green Politics is Good Politics

Hey, this green thing’s catching on! Not that anyone reading this likely needed convincing that solar power’s a good thing, but a new survey shows that a lot of other people now think similarly. According to the SCHOTT Solar Barometer report a whopping 98% of Independents, 97% of Democrats and 91% of Republicans think that developing solar power is in the vital interests of the United States. On the flip side of this, only 3% of people surveyed thought that favoring coal was a good direction for the country to head. Additionally, a near-equal amount of Democrats (72%), Republicans (72%) and Independents (74%) thought that extending federal tax credits were a good way to encourage further development of solar. Granted this is a survey conducted by two groups with an overt economic stake in the results, but the figures are certainly compelling.

Oil goes Green, like actually green

THIS is one biofuel that lives up to its green billing in more ways than one. It’s an emerald-green crude oil, produced by photosynthesis in algae, which could fuel cars, trucks and aircraft – without consuming crops that can be used as food.

“This product can go right into today’s oil pipeline,” claims Jason Pyle of Sapphire Energy in San Diego, California, which developed the fuel. He says the “green crude” is similar in quality to naturally occurring crude oil. It is produced as a by-product of photosynthesis by a genetically engineered strain of algae, housed in tanks of treated waste-water and exposed to sunlight. The tanks can be placed on non-arable land.

Gasoline, diesel and jet fuel have already been refined from the green crude, and the company aims to produce 10,000 barrels per day within five years.

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