Green Options

Researchers at the Georgia Institute of Technology have made a three-dimensional photovoltaic solar cell around an optical fibre, a revolutionary new approach that could pave the way for a new generation of hyper-flexible solar systems.

According to team-leader Professor Zhong Lin Wang, “Using this technology, we can make photovoltaic generators that are foldable, concealed and mobile. Optical fibre could conduct sunlight into a building’s walls where the nanostructures would convert it to electricity. This is truly a three dimensional solar cell.”

SOLARIG, a company based in Spain that incorporated about four years ago, just began construction of eight photovoltaic parks in Italy this month. The parks will provide 8 MW of energy in total. Over the next few months, it plans to construct photovoltaic projects producing 30 MW throughout different regions of Italy.

But this is just the beginning. SOLARIG has a more global vision.

Suddenly, “green business” is a little low on green and high on business. Companies that were built to take on Big Oil are now sharpening their elbows in the lobbying fight to make sure that the bottom line does not fall victim to grid enhancements that are built out by someone else.

Asian countries may soon lead the world in clean energy technology. Take a look at how they are using it today.

Despite President Obama’s call for the United States to lead the clean energy technology industry, a weak climate bill (H.R. 2454) awaiting the Senate to return from recess promises limited funding for research and development of renewable clean energy technologies.

Asia, however, has recognized the advantages of embracing clean energy development and the race for clean energy dominance is heating up faster than the planet. Here’s a look at the development of clean energy technology in the some of the world’s developing Asian economies.

1. Kunming - China’s “Solar City”

Exciting developments are occurring in solar PV (photovoltaic) power generation. New technologies are improving manufacturing processes. Thin-film and organic (plastic) films promise to reduce PV power cost. Solar “grid parity,” the time when solar power will cost the same as fossil fuel power, is coming soon.

An Italian company has announced plans to install the world’s largest rooftop solar photovoltaic plant, with an energy capacity equivalent to the power needs of 5,000 households.

Solon SE will establish the facility at its Padua warehouse and truck-loading complex, generating an output of up to 15 megawatts when the sun is at its brightest.

Major US renewables company Astonfield is set to invest a massive $2 billion in India over the next five years, the largest single cash-injection in renewable energy ever seen in the sub-continent.

The deal will generate about 1,000 MW of power, most of it from solar sources.

Much of the proposed $2 billion investment will go towards building solar-photovoltaic powered projects with a capacity of 500 MW.

DARPA, the U.S. military’s chief high-tech office, is looking for a few good photovoltaics. Not just any garden variety solar panels, mind you.  The agency is soliciting proposals for Low-Cost Lightweight Portable Photovoltaics (PoP) that can stand up to battle conditions and environmental extremes while delivering high power conversion efficiency.  Think backpacks with built-in solar capacity, with teeth.

Move over Sydney Opera House, the city’s major drama company is all set to go green.

Two months ago, the Sydney Theatre Company (STC) embarked on a major program to transform The Wharf, its much-loved home on Sydney Harbour, into a unique demonstration of how buildings, even heritage-listed ones, can be made more sustainable. A whopping $1.2m (Australian dollars) was committed through the Australian government’s Green Precincts Fund, to assist the Company’s Greening The Wharf project.

A few days ago, the company announced that it will install a large capacity photo voltaic array as a key initiative of the program. The installation of the 2,000 solar panels will be erected on the roof of The Wharf of the Sydney Harbour-based company, along with energy saving measures, and will reduce STC’s power drawn from the grid by up to 70 per cent. It is the first renewable energy project of its kind by any major theater company.

There’s an electric car revolution underway in sleepy Browntown, Wisconsin, population 252.

More than six Sebring-Vanguard CitiCars, many zipping down the country roads in southwestern Wisconsin, are registered to owners in this small town – most to Phil Welty and one to myself.  They come in red, yellow and several other colors and look like a wedge of cheese, but they’re all completely powered by electric motors.  It’s estimated that as few as 600 CitiCars are still on the road in the U.S. with less than 3,000 manufactured by Sebring-Vanguard between 1974 and 1976 during the last energy crisis.

“When I first saw the CitiCars back in the 1970s, it was the only all-electric car on the market,” recalls Phil Welty,  “The same problem exists today as in the 1970s, like high fuel prices and our marriage to foreign oil.  I’ve always wanted to bring one back from the junkyard and restore it to fully operable condition.”  Not content with just one, he has two CitiCars on the road, using his other cars for parts.

One of the biggest problems with solar cells currently on the market is that they are extremely easy to break. Companies intent on manufacturing any sort of solar powered products have to find solutions, and few have yet been perfect. Hoping to change this trend, Dupont recently announced the launch of two new lines of encapsulants specifically designed to contend with the trials inherent in manufacturing photovoltaic products.