Showing posts with label Solar Power. Show all posts
Showing posts with label Solar Power. Show all posts

'Solar Will Always Occupy A Good Place In My Life'

The first thing people notice about him is, almost invariably, his flawless personality. Born in a journalistic and writers' background, he had always been anxious to prove he is more than just a son of two popular writers-his parents-and this is reflected in the challenging roles he took on since he was very young. He is known and recognised in the industry as a senior technology leader with an experience of over 25 years in the solar energy space. He has built and integrated professionals into result oriented multidisciplinary teams and has been instrumental in scaling up and validation of thin film technologies from research into production. Meet the man who brought sunshine in many a lives and saw very closely how solar energy completely changed people's lives. Changing the direction of his life a couple of times, Rajiv Arya is presently the CEO of Moser Baer Photovoltaic Ltd, a fully owned subsidiary of Moser Baer India Ltd. Arya's story is one of determination, focus and perseverance .

I was born in England where my father spent his 14 years. My parents were both writers-my father was a journalist and my mother a short story writer. I have two sisters, and when my younger sister was born, my father left England to settle in India. I was then seven-and-a-half-year-old. My father joined Economic Times as the bureau chief of Kolkata and served it for 20 years.

Caught between social movements

As a student I excelled in studies. I went to Andrews School in Kolkata. In 1970-71, Kolkata was tensed due to the Naxalite movement and all colleges remained closed for most of the year. I lost an academic year in Kolkata. So I had to move to Ranchi to do undergraduation. But life had other plans for me. In Ranchi, too, I ended up losing a year as the JP movement had started there. So, I lost two academic years as I was caught between the Naxalite movement and the JP movement. It is a common parlance that if you're 20 and you're still not a communist it means you don't have a heart. And at 40, if you're still a communist you don't have a head. Kolkata, as we all are aware, is a politically sensitive city. I was influenced by the Naxalite movement but not to the extent of getting involved in it. I was never politically active. In fact, I was more active in sports and made my school and college proud of my sportsman skills. Losing two academic years and being away from college during the turmoil was like an extended holiday for me. I represented my school and college in many sports. I played hockey at the district level, cricket, football and badminton. Also, my tall and skinny stature helped me being a good wicketkeeper and a goalkeeper.

Education, an important part of my life I come from a family where education is given a lot of importance. That was the major drive for everything I did in life. So like many youngsters, I was not carried away by the Naxalite and JP movements. I would not call myself a naughty child, rather I was mischievous. However, I took part in all competitions, particularly scientific model competitions, and won many prizes in school. It is only when I was in college that I realised the importance of education and became very serious towards studies. I was overwhelmed by the thought that I have to do something that would make me successful. After my undergraduation, I went back to Kolkata and did my Masters in pure science-solid state physics-from Jadavpur University, Kolkata, and M Tech in material science from the Indian Institute of Technology, Kanpur. In 1983, I proceeded to the US to obtain my PhD in engineering from Brown University, Rhode Island. My favourite subject in college was physics and I still like it.

The turning point

In college, I was determined to be a hardcore political physicist. But when I was doing my Masters, I realised that I am not fit for it. It happened so when I was writing an article where I had to explain what a political physicist do, that's when I realised that I did not fit into the definition and decided that I will not remain in pure science and wanted to take up technology. That was a turning point in my life where I realised my limitations, both in terms of liking and my ability to think independently. I always did what I wanted to do. Sometimes when I think back, I realise that the biggest support my sisters and I got from our parents was their faith in our ability and the freedom to do what we wanted to, so long as we had an objective. They never had any problem when I changed the direction of my studies. They never pushed me to be a doctor or an engineer, neither did they push me to be a journalist. They always gave me the freedom to figure out what I would like to do in life. This positive support from my parents has deeply influenced my life.

Writing is my passion

I started writing very young. My first story was published when I was 13 and was paid for it. My second story was published when I was in the ninth grade, however, my third story was rejected. After two of my stories got published, I was confident that I had become a writer and sent the third story to Sarika, a magazine for adult readers. Naturally, they would reject a child's article. When I came back from school I saw the manuscript on the living room table which was corrected by my mother. As egoistic as I was, I stopped writing completely because I couldn't digest the fact that my Hindi was corrected by my mother. I was being stupid. But that was the end of my journey of becoming a writer or a journalist. My father learned several languages; both my sisters were taught various languages but I pronounced that if I wanted to learn any language I would learn on my own. My ego didn't permit me to do the same things as other did. In fact, I felt a lot of competition from my parents, so I chose to do things differently.

I always felt, if my father could find his own bread why couldn't I? My parents encouraged this attitude. I did everything on my own. My father let me move around on my own even in unknown places since I was a small boy. He used to say, “If you get lost, you have the house phone number and address. You should be able to find your way home.” I grew up in a family where there was a lot of pressure to do well in school and college. The rest was left to us. I think that is what made us so independent. My sister and I found our own ways and are doing well in life.

Solar just happened One of my professors, Dr Dilip Paul, who was also my guide in PhD, persuaded me to do my M Tech thesis on solar energy. In 1978, he sent me from the US to Delhi to attend a solar energy conference at Vigyan Bhawan. I was extremely enlightened and took up solar as my career. I did my thesis on solar energy. I feel extremely satisfied that I have chosen this line. I have seen people's life taking a turn around with the help of solar. In late 1990s, there was a UN project in India on water pumping. I came to India to see how the solar powered water pumps were working. I landed in Hyderabad and took a car to visit a village in the interior. There was no electricity in the village, and no pacca road. I had to leave the car and walk for 45 minutes to reach the village. You can imagine how backward the village was. In such a village, when I saw the solar panels I was overwhelmed.

From a long distance I could see the solar panels in the fields. Then I saw three water pumps powered by the solar panels. When I was introduced to the farmer working in the field, he came and touched my feet out of gratitude. He took me to his home and fed me. He said that before the three solar powered water pumps came in the village, he used to cultivate only one crop annually. But with three pumps, he was cultivating three crops a year and also been able to send his three children to school. Even today, when I remember such incidents I get goosebumps!

I am happy that I never gave up on solar. Solar requires dedication and good technology. I think if my professor would have given me a different direction I would have taken it but since he showed me the solar direction I am grateful to him. So I can say that solar just happened. During my college days I did change lines but after solar happened I was very determined that this is what I want to do.

Road to success

If I am on the road to success, I owe it to a large extent to my family support. In 1979, I went to the US, and for the next 28 years I stayed there-first I did my PhD, then I worked for a small startup company. After leaving that I joined Solerex as a senior project scientist and left 19 years later as executive director (thin film technology). I was also the director of the Oregon Renewable Energy Centre in Portland, Oregon, where I led an organisation with a statewide charter for applied research and education in renewable energy systems. Next, I started a solar company along with five others. Initially, the company was called Gen3Solar in Hayward, California. Later, it was named OptiSolar Inc., where I worked as the chief technology officer. I also launched Arya International, Inc., a solar technology and business consulting firm, in 2003. I joined Moser Baer in September 2007 and was instrumental in envisaging the company's plan to attain 1 GW capacity across three verticals-silicon, thin film and concentrators. Presently, I am working as the chief executive officer. My work includes product design, process scale up, process transfer, piloting and start up of a thin film solar module plant.

With 25 years' experience in thin film solar cells and modules, I have maintained a professional interest in many aspects of renewable energy components and systems. My R&D activities have centered on material and device aspects of three types of thin film solar cells and modules-amorphous silicon, copper indium diselenide and cadmium telluride.

Other roles in life I got married in 1979, the year I left for the US. My wife, who has a Masters in social work, has been a psychiatric social worker. Our only son Rajat studied computer science and is working in the US. Rajat is also as independent as I was when I was his age. I think I have well managed my roles as a father and as a husband. My son is like a friend but I think he is closer to my wife. Whenever he comes to India, we spend quality time together. We go to watch a play or a game, leaving his wife and his mother home. We like to spend time with each other despite a wide generation gap that exists between us. I am fortunate and feel blessed that I have this kind of relationship with my son and daughter-in-law.

However, I must admit that I may have neglected some of my responsibilities towards my wife. As I was very dedicated to my work, my wife had to give more time to my son and do most of the interactions with his school and college. She keeps my family going by filling in for me. What overwhelms me the most is how she compromised her career for mine.But we are both professionals and know each other for long. So there are no hangups.

Later life

I did stop publishing my stories after ninth standard but that does not mean that I have stopped writing. Besides studies, if I have done anything serious, it was writing poetry. I still write and recite poetry. I recite essentially in three languages, mostly in Hindi, but I have friends in south India who speak English, and for them I recite in English. There is a lot of pressure from publishers to publish my work but I don't let any of my poetries go out. One day I may go back to writing and publish in those journals where my parents published their stories. But that is for later. I would never be as good a writer as they were. But I am absolutely sure, if I wanted I could have become a writer. Once I was a big movie buffer but now I don't watch movies. I would rather go and watch a play. I am very fond of watching plays.

Solar is close to my heart

The future of solar in India is very bright and the national solar mission will change the entire future of solar energy. India was not counted as a solar hub like Germany, Japan and the US. But in the coming years, India will be one of the leading solar countries for multiple reasons-shortage of electricity, 300 days of sunshine, and now we have a strong government policy.

Moser Baer will play a major role in achieving the target of the solar mission. In two-and-a-half years, Moser Baer will be the largest solar company in India. I want to capture the biggest share of the solar pie; we have the ability to do it.Solar energy is very close to my heart and will always have a good place in my life. Even after I retire from work, I would continue working with it. Besides, I will teach languages-let me tell you, in the US I taught Hindi to little children. I will also pursue writing full time and I will give a serious try to see what level I can achieve.

Haryana Raj Bhawan Complex To Go Solar

Wednesday, May 05, 2010: The Haryana government is all set to go green! It has earmarked Rs 2 crore to set up solar power plants at the Haryana Raj Bhawan and collectorate offices in 10 of the state's districts. Madhusudan Prasad, financial commissioner and principal secretary of renewable energy said yesterday that a 45 kilowatt (KW) solar power plant will be installed at Haryana Raj Bhawan in Chandigarh.

"Plants of 4.5 KW capacity each at 10 district collectorates' offices in Ambala, Jind, Kurukshetra, Rewari, Fatehabad, Hisar, Faridabad, Sonepat, Narnaul and Panchkula will also be installed this year.
The total cost of the project will be Rs 2 crore," Prasad explained.

The solar plant at Raj Bhawan alone would set back the exchequer by Rs 1 crore. He added that the solar power plants were being set up under the aegis of the union ministry of new and renewable energy to utilise renewable energy options, reports SiliconIndia.

Further, Prasad added, "This would not only demonstrate the renewable energy options and substitute conventional energy, but also contribute in carbon reduction of 120 tonnes annually, which is the need of the hour."

The Year in Energy

When oil prices shot to $145 per barrel this year, supporters of alternative-energy technologies of all kinds cheered. Spirits fell, however, especially at some advanced biofuels companies, after oil prices plummeted to $40, a contingency considered at the beginning of this year in our realistic assessment of biofuels.

Capturing more light: A startup called 1366 Technologies says that it has found a way to significantly increase the efficiency of silicon solar cells. Ordinarily, the flat wires on the surface of solar cells that are used to collect electrical current prevent light from reaching the active material in a cell, reducing efficiency. The company’s new design traps much of the light that would have been reflected. In the picture, some of the red light from a laser is redirected from the wire to areas on the cell where the light can be absorbed. The new approach dramatically helps improve the performance of solar cells without increasing costs.
Credit: 1366 Technologies

Yet the year has seen some remarkable advances in energy technology, and many of the innovators in this area remain hopeful that the coming decade won't be like the 1980s, when a drop in oil prices snuffed out interest in alternative energy.

A number of improvements to wind turbines could increase the amount of power that they produce and make wind power cheaper. Among the improvements were new blade designs inspired by whales, as well asbetter generators and a new enclosed design that could double power output.

Electric vehicles and plug-ins also took steps forward with better batteries, as well as with an ambitious planby a company called Better Place to develop a vehicle-charging and battery-swapping network that will begin in Israel and Denmark. More recently, the same company has announced projects in Australia, California, and Hawaii. One of the cars that could be a part of this system was announced by Renault--indeed, all of the major automakers have confirmed projects for plug-in hybrids or electric cars.

Solar panels continue to improve. Experimental solar concentrators could make solar power as cheap as electricity from coal. Modifications to conventional solar cells could lower prices even sooner. A basic research finding could lead to a cheap way to store solar power--and, for that matter, any other source of electricity. That could be a boon to the power grid and allow renewable sources to supply much more of our electricity. (See David Talbot's "Lifeline for Renewable Power.") link..

More AC Power from Solar Panels

There's more to solar power than blue glassy panels shimmering on rooftops. Just as important are the inverters that convert DC power created by the solar panels into grid-ready AC power. Typically, all the panels in a rooftop PV system are connected to one large inverter mounted on the side of a house.

Behind the scene: Small micro-inverters, such as the one shown above, can be attached behind each solar panel to convert DC power into AC and improve the system’s overall efficiency.
Credit: Enphase Energy

Startup Enphase Energy of Petaluma, CA, is now making the first micro-inverters. These smaller inverters can be bolted to the racking under each solar panel, to convert DC power into AC for each panel individually. The company claims that the devices will increase a PV system's efficiency by 5 to 25 percent and decrease the cost of solar power.

Enphase has raised more than $20 million in its latest round of funding. The company has teamed up with various distributors and partners, including solar-module manufacturer Suntech Power Holdings and installerAkeena Solar, to bring its device to customers. The micro-inverters could be used on residential, commercial, or even utility-scale PV systems, says Todd Wilson, a general partner at RockPort Capital Partners, one of the leading investors in Enphase's technology.

In addition to DC-to-AC conversion, inverters are in charge of getting the most power from solar modules. They have a logic circuit that constantly searches for the best voltage and current levels at which the panels can operate. (Power is the product of voltage and current.link..

Chasing the Sun

The federal government is about to spend billions of dollars on renewable energy. In Part II of our series on the federal stimulus bill, we look at the impact the spending will have on the future of solar power.

By David Rotman

This is the second of two articles by David Rotman on technology and the federal stimulus package. The first, "Can Technology Save the Economy?," appeared in the May/June 2009 issue and examined the economic consequences of the U.S. government's plans to spend $100 billion on technology.

Subscribe to the Technology Review Magazine

July/AugustTo view this article, you must have a paid subscription to Technology Review (print or digital edition) OR you can purchase credits to view individual articles. We have several options for content access:

Technology Review does more than tell you about what you can expect to see next. We explain it to you, in graphic, riveting detail. If it’s relevant to technology and the future, you’ll learn about it first inTechnology Review. Well before the mainstream press wakes up to a technology breakthrough, Technology Review will have made it available to you. But we don’t just report—we analyze. You get in-depth coverage that’s authoritative, reliable, and universally respected.

Please note: Click here if you are currently a Technology Review print or digital subscriber and do not have access to this article. link...

Solar Thermal Heats Up

The hitch with solar power has always been its sky-high cost: the sun may be free, but the materials and the equipment needed to convert rays into electricity certainly aren't. That's why entrepreneurs have long been searching for a way to create a solar company with an economic model that resembles a software startup--selling a sophisticated computer program that drives cheap, commodity hardware.

Power mirrors: ESolar's solar thermal test bed in Lancaster, CA, is set to start producing power for the grid later this summer. The field's 24,000 mirrors can produce five megawatts of electricity by reflecting solar radiation to tower-based water boilers that drive turbines.
Credit: eSolar

Bill Gross, founder of the startup incubator Idealab, based in Pasadena, CA, believes that he's got it: an enterprise designed to kick off what he calls a "disruptive revolution" in carbon-free energy. A serial entrepreneur who has launched more than 30 tech companies, Gross is CEO of eSolar, a Pasadena-based solar thermal venture that will go live with a five-megawatt test bed of its utility-scale technology on the grid later this summer.

But that's only a tiny fraction of what's to come. The privately held eSolar and its power plant operating partner, NRG Energy, have announced agreements with three electric utilities to install 500 megawatts of thermal solar capacity over the next few years.

To put that into perspective, that is more than the current 450 megawatts of solar thermal capacity that's online in the United States today, says Daniel Englander, a solar energy analyst with GTM Research, in Cambridge, MA. And it's a significant fraction of the total of 1.5 gigawatts of photovoltaic solar capacity currently link...

Solar for Dark Climates

Cool Energy, a startup based in Boulder, CO, is developing a system that produces heat and electricity from the sun. It could help make solar energy competitive with conventional sources of energy in relatively dark and cold climates, such as the northern half of the United States and countries such as Canada and Germany.

Solar generator: A prototype of a Stirling engine that's powered by a solar water heater.
Credit: Cool Energy

The company's system combines a conventional solar water heater with a new Stirling-engine-based generator that it is developing. In cool months, the solar heater provides hot water and space heating. In warmer months, excess heat is used to drive the Stirling engine and generate electricity.

Samuel Weaver, the company's president and CEO, says that the system is more economical than solar water heaters alone because it makes use of heat that would otherwise be wasted during summer months. The system will also pay for itself about twice as quickly as conventional solar photovoltaics will, he says. That's in part because it can efficiently offset heating bills in the winter--something that photovoltaics can't do--and in part because the evacuated tubes used to collect heat from the sun make better use of diffuse light than conventional solar panels do.

The system is designed to provide almost all of a house's heating needs. But the generator, which will produce only 1.5 kilowatts of power, won't be enough to power a house on its own. The system is designed to work with power from the grid, although the power is enough to run a refrigerator and a few lights in the event of a power failure.

The company's key innovation is the Stirling engine, which is designed to work at temperatures much lowerthan ordinary Stirling engines. In these engines, a piston is driven by heating up one side of the engine while keeping the opposite side cool. Ordinarily, the engines require temperatures of above 500 °C, but Cool Energy's engine is designed to run at the 200 degrees that solar water heaters provide. link..

Q&A: Mark Little, Head of GE Global Research

Mark Little, head of the $6 billion-a-year research effort at GE, sat down with Technology Review recently to talk about his company's latest technologies and how GE will respond to pending carbon emissions caps, such as those proposed in the Waxman-Markey energy and climate-change bill recently passed by the U.S. House of Representatives.

Global research: Mark Little, the head of research at GE.
Credit: Kevin Bullis,
Technology Review


Little is the director of GE Global Research, a massive, 2,600-person research organization based in Niskayuna, NY, that employs about 1,000 PhDs. The company's research funding includes nearly $1.5 billion directed toward "clean tech," such as wind turbines and hybrid locomotives. Little says that advances at GE in thin-film solar, the smart grid, coal gasification, and capturing carbon dioxide emitted by power plants will prove key to meeting future emissions goals.

The company also has a heavy investment in nuclear power, including an improved design now working its way through the regulatory process. But the company's latest models are essentially simplified and less-expensive versions of existing reactors, not radical departures such as pebble-bed nuclear reactors orsmaller reactors that can be manufactured and shipped to power-plant sites. Those more advanced designs still don't look financially attractive, Little says.

While impending carbon caps are helping to drive research at GE, direct federal funding is helping too. Little describes two projects--a $2 million stimulus-funded smart-grid demonstration and a $100 million battery factory--that GE hopes to receive funding for this year. link...

Cheaper Solar Thermal Power

Stirling Energy Systems (SES), based in Phoenix, has decreased the complexity and cost of its technology for converting the heat in sunlight into electricity, allowing for high-volume production. It will begin building very large solar-power plants using its equipment as soon as next year.

Sun catchers: This is the latest design of a system for focusing sunlight on a Stirling engine to generate electricity.
Credit: Sandia National Laboratories/Randy Montoya

The company is currently building a 1.5-megawatt, 60-unit demonstration plant that will use the company's latest design. Stirling expects to finish that project by the end of the year. It also has contracts with two California utilities to supply a total of 800 megawatts of solar power in Southern California. The first of the plants that will supply this power could be built starting the middle of next year, pending government permits and loan guarantees from the U.S. Department of Energy (DOE).

The projects are part of a resurgence in what's known as solar thermal power. Various solar thermal technologies were developed starting in the 1970s, but a breakdown in government funding and incentives caused them to stall before they reached a scale of production large enough to drive down costs and allow them to compete with conventional sources of electricity. "It was a classic problem with solar. The market support to bring solar to high volume wasn't there," says Ian Simington, the chairman of SES and chief executive of the solar division of NTR, a company based in Dublin, Ireland, that bought a controlling share of SES last year.

Recent state mandates and incentives for renewable energy have led to a new push to commercialize the technology. There are over six gigawatts of concentrated solar power under contract in the southwestern United States right now, says Thomas Mancini, program manager for concentrated-solar-power technology at Sandia National Laboratory in Albuquerque, NM. That's equivalent to about six nuclear-power plants. BrightSource Energyhas contracts to provide 2.6 gigawatts of solar power with concentrated solar power (a previous version of this story cited only one of two 1.3 gigawatt contracts), and Solar Millenium has announced a project that would generate nearly one gigawatt of power. link...

Solar Industry: No Breakthroughs Needed

The federal government is behind the times when it comes to making decisions aboutadvancing the solar industry, according to several solar-industry experts. This has led, they argue, to a misplaced emphasis on research into futuristic new technologies, rather than support for scaling up existing ones. That was the prevailing opinion at a symposium last week put together by the National Academies in Washington, DC, on the topic of scaling up the solar industry.

Cheaper solar: First Solar’s improvements in manufacturing photovoltaics have helped lead to big drops in cost. A worker at a First Solar factory in Frankfurt, Germany, moves one of the company's solar panels.
Credit: First Solar

The meeting was attended by numerous experts from the photovoltaic industry and academia. And many complained that the emphasis on finding new technologies is misplaced. "This is such a fast-moving field," said Ken Zweibel, director of the Solar Institute at George Washington University. "To some degree, we're fighting the last war. We're answering the questions from 5, 10, 15 years ago in a world where things have really changed."

In the past year, the federal government has announced new investments in research into "transformational" solar technologies that represent radical departures from existing crystalline-silicon or thin-film technologies that are already on the market. The investments include new energy-research centers sponsored by the Department of Energy and a new agency called ARPA-Energy, modeled after the Defense Advanced Research Projects Agency. Such investments are prompted by the fact that conventional solar technologies have historically produced electricity that's far more expensive than electricity from fossil fuels.

In fact, Energy Secretary Steven Chu has said that a breakthrough is needed for photovoltaic technology to make a significant contribution to reducing greenhouse gases. Researchers are exploring solar cells that use very cheap materials or even novel physics that could dramatically increase efficiency, which could bring down costs. link..

Biological Solar

Combining synthetic biology and solar technology could provide a way to trap carbon dioxide and produce fuel.

By David Berry

By harvesting and burning fossil fuels, human beings essentially provide the tail end of a cycle hundreds of millions of years long. Plants and algae that grew by taking in carbon dioxide eventually turned into the deposits of coal and petroleum that we use to power our lives, rereleasing into the atmosphere the same carbon dioxide that nature had previously sequestered. Reducing these emissions will require us to change the way we think about both energy and carbon.

Subscribe to the Technology Review Magazine

September/OctoberTo view this article, you must have a paid subscription to Technology Review (print or digital edition) OR you can purchase credits to view individual articles. We have several options for content access:

Technology Review does more than tell you about what you can expect to see next. We explain it to you, in graphic, riveting detail. If it’s relevant to technology and the future, you’ll learn about it first inTechnology Review. Well before the mainstream press wakes up to a technology breakthrough, Technology Review will have made it available to you. But we don’t just report—we analyze. You get in-depth coverage that’s authoritative, reliable, and universally respected.

Please note: Click here if you are currently a Technology Review print or digital subscriber and do not have access to this article

link....

Shade Power

Photovoltaic cells made from organic polymers, rather than crystalline silicon, could make solar power much cheaper. Last year Konarka, a startup based in Lowell, MA, opened a factory for such solar panels, which are flexible and produced in a process akin to printing (see "Mass Production of Plastic Solar Cells"). The first application of Konarka's potentially transformative technology? Umbrellas. SkyShades, based in Orlando, FL, is incorporating the panels into umbrellas designed for outdoor seating areas in places like restaurants and bars. Patrons can recharge mobile devices such as laptops and cell phones from outlets built into the stem of the umbrella. The four-meter-wide Powerbrella can generate up to 128 watts of electricity, which charges a bank of batteries located in its base. link...