Showing posts with label Worlds. Show all posts
Showing posts with label Worlds. Show all posts

Tuesday, December 6, 2011

A Brazilian solar initiative serves as model to better the lives of world’s poorest



My Clean Break column this weekend takes a look at the efforts of Brazilian social entrepreneur Fabio Rosa and how, with the donation of 560 solar panels from Canadian Solar Solutions, a subsidiary of Canadian Solar Inc., impoverished villages in the Amazon will soon get a clean, reliable source of power for keeping lights on, pumping clean water, and keeping medicine, vaccines and food cooled. This initiative demonstrates clearly how solar, beyond simply adding more renewable energy to the power mix of developed countries, has the potential to directly improve the well-being of millions of individuals around the world living on a few dollars or less per month.


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A number of impoverished villages in Brazil’s Amazonia region will soon receive a life-changing Christmas present from Canada.


As you read this a shipping container full of 560 solar panels is en route to Brazil aboard the cargo ship MSC Santhya. The panels, worth nearly $1 million (when shipping and delivery costs are factored in), were donated by Canadian Solar Solutions Inc. and manufactured out of the company’s new facility in Guelph.


Once these made-in-Ontario panels arrive in Brazil, they will be transported to a handful of villages and, come spring 2012, installed atop schools, hospitals, and water-pumping stations. The power they produce will be used directly, or stored in golf-cart batteries so the energy from the sun can be used at night.


It’s all part of a program started in 2001 by Brazilian social entrepreneur Fabio Rosa, who, along with help from Canadian investigative journalist Paul McKay, are on a mission to bring clean water, light, refrigeration, basic communications and, ultimately, better health and education to some of the poorest people on the planet.


McKay was a reporter at the Ottawa Citizen when he travelled to Brazil in 2004 to do a series of stories. It was there that he met Rosa and learned about how something as simple as a solar panel could have such a profound impact on the lives of so many.


Solar may have a growing role to play in cleaning up Ontario’s electricity system, creating green jobs, and helping homeowner reduce their environmental footprint – and their guilt.


But in these remote Brazilian communities with no connection to a power grid, solar technology can both enrich and save lives. Medicine, vaccines and food can be kept cool 24 hours a day. Light can come from CFL bulbs and LEDs instead of kerosene lamps that emit toxic fumes indoors. Sun-powered pumps can supply a constant flow of clean water.


The problem is villagers typically make as little as $2 a day. “There are 20 million people in Brazil without access to electricity and they can’t afford the panels themselves,” explains McKay, who in “retirement” is now a green energy advocate running his own foundation that acts as a kind of North American ambassador to Rosa’s efforts.


“Most utilities there have been privatized and are not interested in going after tiny customers in remote places.”



Rosa is offering these villagers an alternative, but to be clear, he isn’t giving the technology away. What he has developed is a low-cost leasing model that makes the systems and the energy they produce accessible to the poor.


Typically, he will install a solar panel, a battery, a charge controller, a few lights, and a water pump in each home and then charge less than $15 a month for what, in essence, is the service this equipment provides.


Keep in mind that these individuals would already be paying $15 a month on candles, batteries, and kerosene that would no longer be required, so there is no additional financial burden. What they get in return, however, is a far better quality of life and work.


Something as simple as the ability to pump water automatically for a cash crop operation can also generate new income for villagers.


The panels supplied by Canadian Solar will go a step further. Instead of being used to support individual households, they will support entire villages by bringing power to schools, hospitals, central pumping stations and even Internet and cellphone stations.


Milfred Hammerbacher, president and chief executive of Canadian Solar Solutions, which is a subsidiary of Canadian Solar Inc., says the decision to get involved came in 2010 after McKay brought Rosa to the company’s factory for a presentation.


The company fell in love with the idea, recalls Hammerbacher.


“It was a great opportunity for us to help out,” he says. “On a personal level, it’s really why I got into the solar business in the first place. There are so many cases where a few solar panels can make such a huge difference in people’s lives.”


Next spring, the company will be sending down a team of employees to help install the systems.


McKay says the donation of so many panels is significant and takes Rosa’s program to a new level. It has taken years to install 300 systems, as Rosa could only raise enough money to purchase five to 10 panels at a time. He also has to raise funds for all the batteries, pumps and lights that go with each system.


He hopes that by having Canadian Solar show such good will, other suppliers and non-governmental organizations will step up to the plate. In that regard, McKay’s and Rosa’s next priority is to get a similarly large donation of batteries to go with the panels.


The potential is there to grow Rosa’s program throughout Latin America and into the poorest regions of Africa and Asia. Indeed, that’s their plan.

It’s an idea that Hammerbacher finds appealing. “This is something we’d like to do on a long-term basis,” he says. “There are many other organizations like Rosa’s around the world that we’d like to support if we can.


“I hope a lot of other solar companies follow.”




View the original article here

Saturday, November 5, 2011

World’s Largest Wind Power Project Moving Forward







Truck with a wind turbine blade on its way to the Caithness Shepherds Flat wind farm under construction in Eastern Oregon.

It’s been a long time since we reported on the largest wind farm in the world, the 845-megawatt Caithness Shepherds Flat project in Eastern Oregon (in Gilliam and Morrow Counties, to be exact). I think the last time we reported on it was in April, after Google announced that it was investing $100 million in the project. While there isn’t any groundbreaking news to report, the project is moving forward according to schedule and Phase 1 (which includes 70 wind turbines) is supposed to be fully completed by the end of November.

Construction is on schedule and on budget. Work on the substations, interconnection facilities, transmission lines, and electricity collection systems has been finished. 338 foundations (for all three stages) have been built. All in all, the project is more than 50% complete. By August 2012, all 338 wind turbines are projected to be up and running.

Wind power is booming across the U.S. and across the world. Being perhaps the cheapest form of new electricity in most places, it is consistently being chosen over development of coal, nuclear, and natural gas power stations by energy companies and corporations (with and without a green leaning) who can do simple math. Total installed power capacity of wind turbines around the world is expected to go from 197, 039 MW at the end of 2010 to 1,750,000 MW by 2030.

The Caithness Shepherds Flat wind farm is owned by Caithness, GE Energy Financial Services, Google Inc., Sumitomo Corporation of America, and Tyr Energy, and it is being built along the Columbia River Gorge (I guess I wasn’t completely exact above).


View the original article here

Friday, September 16, 2011

World's smallest electric motor made from a single molecule

ScienceDaily (Sep. 4, 2011) — The smallest electrical motor on the planet, at least according to Guinness World Records, is 200 nanometers. Granted, that's a pretty small motor -- after all, a single strand of human hair is 60,000 nanometers wide -- but that tiny mark is about to be shattered in a big way.

Chemists at Tufts University's School of Arts and Sciences have developed the world's first single molecule electric motor, a development that may potentially create a new class of devices that could be used in applications ranging from medicine to engineering.

In research published online Sept. 4 in Nature Nanotechnology, the Tufts team reports an electric motor that measures a mere 1 nanometer across, groundbreaking work considering that the current world record is a 200 nanometer motor. A single strand of human hair is about 60,000 nanometers wide.


According to E. Charles H. Sykes, Ph.D., associate professor of chemistry at Tufts and senior author on the paper, the team plans to submit the Tufts-built electric motor to Guinness World Records.

"There has been significant progress in the construction of molecular motors powered by light and by chemical reactions, but this is the first time that electrically-driven molecular motors have been demonstrated, despite a few theoretical proposals," says Sykes. "We have been able to show that you can provide electricity to a single molecule and get it to do something that is not just random."

Sykes and his colleagues were able to control a molecular motor with electricity by using a state of the art, low-temperature scanning tunneling microscope (LT-STM), one of about only 100 in the United States. The LT-STM uses electrons instead of light to "see" molecules.

The team used the metal tip on the microscope to provide an electrical charge to a butyl methyl sulfide molecule that had been placed on a conductive copper surface. This sulfur-containing molecule had carbon and hydrogen atoms radiating off to form what looked like two arms, with four carbons on one side and one on the other. These carbon chains were free to rotate around the sulfur-copper bond.


The team determined that by controlling the temperature of the molecule they could directly impact the rotation of the molecule. Temperatures around 5 Kelvin (K), or about minus 450 degrees Fahrenheit (ºF), proved to be the ideal to track the motor's motion. At this temperature, the Tufts researchers were able to track all of the rotations of the motor and analyze the data.


While there are foreseeable practical applications with this electric motor, breakthroughs would need to be made in the temperatures at which electric molecular motors operate. The motor spins much faster at higher temperatures, making it difficult to measure and control the rotation of the motor.


"Once we have a better grasp on the temperatures necessary to make these motors function, there could be real-world application in some sensing and medical devices which involve tiny pipes. Friction of the fluid against the pipe walls increases at these small scales, and covering the wall with motors could help drive fluids along," said Sykes. "Coupling molecular motion with electrical signals could also create miniature gears in nanoscale electrical circuits; these gears could be used in miniature delay lines, which are used in devices like cell phones."


The Changing Face of Chemistry


Students from the high school to the doctoral level played an integral role in the complex task of collecting and analyzing the movement of the tiny molecular motors.


"Involvement in this type of research can be an enlightening, and in some cases life changing, experience for students," said Sykes. "If we can get people interested in the sciences earlier, through projects like this, there is a greater chance we can impact the career they choose later in life."


As proof that gaining a scientific footing early can matter, one of the high school students involved in the research, Nikolai Klebanov, went on to enroll at Tufts; he is now a sophomore majoring in chemical engineering.


This work was supported by the National Science Foundation, the Beckman Foundation and the Research Corporation for Scientific Advancement.


Tufts University, located on three Massachusetts campuses in Boston, Medford/Somerville, and Grafton, and in Talloires, France, is recognized among the premier research universities in the United States. Tufts enjoys a global reputation for academic excellence and for the preparation of students as leaders in a wide range of professions. A growing number of innovative teaching and research initiatives span all campuses, and collaboration among the faculty and students in the undergraduate, graduate and professional programs across the university is widely encouraged.


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The above story is reprinted (with editorial adaptations by ScienceDaily staff) from materials provided by Tufts University.

Journal Reference:

Heather L. Tierney, Colin J. Murphy, April D. Jewell, Ashleigh E. Baber, Erin V. Iski, Harout Y. Khodaverdian, Allister F. McGuire, Nikolai Klebanov, E. Charles H. Sykes. Experimental demonstration of a single-molecule electric motor. Nature Nanotechnology, 2011; DOI: 10.1038/NNANO.2011.142

View the original article here

Thursday, August 25, 2011

SunSaluter, developed by 19-year-old Canadian Eden Full, could lower cost of solar PV for world’s poorest




A 19-year-old Princeton student from Calgary is getting a once-in-a-lifetime opportunity: $100,000 and the chance to turn a classroom invention into a clean technology business.


Eden Full invented a new type of tracker for Solar PV panels. Instead of using sensors and electric motors to keep the panels directly facing the sun as they move across the sky, Full’s panels track the sun with the help of bimetallic strips that bend and twist in certain predictable ways when heated by the sun. You can read more about it in my Clean Break column posted today. She calls her invention SunSaluter, and like most tracking systems the technology can help improve the energy output of a solar PV system by up to 40 per cent. It’s also much cheaper than using motor-based systems, improving the economics for solar PV and making the technology more accessible to developing countries.


Full has filed a patent for her invention and is now focused on developing it into a commercial product. And she’ll truly get that chance to focus. The second-year Princeton University student was selected as one of “20 under 20? for a $100,000 fellowship from the Thiel Foundation, created by PayPal co-founder and early Facebook investor Peter Thiel. She’s packing up her bag, taking a two-year leave from Princeton and heading to Silicon Valley, where she’ll get the support she needs to build her invention into a business.


Enthusiastic, creative, passionate… and just 19 years old.





View the original article here



Sunday, July 10, 2011

El Hierro: The World’s First Renewable Energy Island… or is It?



El Hierro, the smallest and southern-most island of the Canaries, made headlines recently after it announced plans to become the world’s first island to eradicate its carbon footprint and run completely off 100% renewable energy sources. The Huffington Post reported how El Hierro will be powered by an 11.5 MW wind farm, 11.3 MW of hydroelectric power and a whole bunch of solar thermal collectors and grid-connected photovoltaics. The fact that oil will no longer be transported to this remote location alone will offset 18,200 tons of carbon dioxide. These are undeniably impressive statistics and the project represents a wonderful opportunity for Swiss-Swedish power giant, ABB. Plans call for this ambitious project to be completed by the end of 2011 and will cost $87 million. However there is one problem with the claim that El Hierro is “the world’s first renewable energy island” – it isn’t.



Back in November 2009 I wrote about the small Danish island of Samsø, 15km off the Jutland Peninsula. In 1997, Samsø won a government competition to become a model renewable energy community. Since then, 21 wind turbines have been built on Samsø – an island 48 km long and 24 km wide with a population of approximately 4000. Ten were built on a sandbank off the island’s south coast and another 11 dotted all over the island, and the island has long been considered one of the most successful green energy projects to have launched since environmentalists started raising the alarm about climate change around thirty years ago. Alongside the turbines, the houses in Samsø’s 22 villages are heated by power plants powered by furnaces fired by wood chips and straw and farms of man-sized solar panels in fields kept trim by herds of sheep.



But this takes nothing away from what the people of El Hierro, with a population of more than double that of Samsø’s, are set to achieve. Projects like these must be celebrated. El Hierro and Samsø are the places where the seeds of our energy future are being sewn. Although it is the financial backing and expertise of private companies like ABB that make these projects a practical reality, it is the foresight and ambition of environmentalist and the will of the people of places such as El Hierro and Samsø that make them possible in the first instance.

Via Huffington Post

Photos by Jose Mesa


View the original article here