THORNTON, Colo.--(BUSINESS WIRE)--Ascent Solar Technologies, Inc. (NASDAQ:ASTI), a developer of state-of-the-art flexible thin-film solar modules, today announced that it has achieved its initial target module efficiency goal of 10.0% for its flexible Copper, Indium, Gallium, Selenide (CIGS) monolithically integrated modules.
The U.S. Department of Energy’s National Renewable Energy Laboratory (NREL) has independently verified that the modules measured as high as 10.4% in conversion efficiency. The modules tested at NREL were standard 429 cm2 modules produced by the company’s 1.5MW production line that was put into commercial production in the first quarter of 2009.
Dr. Prem Nath, Sr. Vice President of Production Operations for Ascent Solar, stated, “This is a significant breakthrough in demonstrating our ability to manufacture monolithically integrated flexible CIGS modules with greater than 10% module efficiency in commercial production. Ascent’s high-volume 30MW commercial plant is scheduled to commence initial production at the beginning of 2010. Module efficiency of 10.0% is a vital element for our low-cost-per-watt manufacturing goal in high volume and will establish Ascent Solar as a leader in the production of lightweight flexible photovoltaics used for portable power and building integrated photovoltaic (BIPV) products.”
Dr. Harin S. Ullal, Senior Project Manager for the National Center for Photovoltaics at the National Renewable Energy Laboratory, stated, “Ascent Solar has made progress in advancing the state-of-the-art flexible, lightweight thin-film CIGS PV technology. NREL has independently verified module conversion efficiency of more than 10.0% for several thin-film CIGS monolithically integrated modules deposited on flexible, lightweight plastic substrates.”
About National Renewable Energy Laboratory:
The National Renewable Energy Laboratory (NREL) is the nation's primary laboratory for renewable energy and energy efficiency research and development (R&D). NREL is operated for the U.S. Department of Energy by The Alliance for Sustainable Energy, LLC.
About Ascent Solar Technologies:
Ascent Solar Technologies, Inc., is a developer of thin-film photovoltaic modules with substrate materials that can be more flexible and affordable than most traditional solar panels. Ascent Solar modules can be directly integrated into standard building materials, space applications, consumer electronics for portable power or configured as stand-alone modules for large-scale terrestrial deployment. Ascent Solar is headquartered in Thornton, Colo. Additional information can be found at www.ascentsolar.com.
Forward-Looking Statements
Statements in this press release that are not statements of historical or current fact constitute "forward-looking statements." Such forward-looking statements involve known and unknown risks, uncertainties and other unknown factors that could cause the Company's actual operating results to be materially different from any historical results or from any future results expressed or implied by such forward-looking statements. In addition to statements that explicitly describe these risks and uncertainties, readers are urged to consider statements that contain terms such as "believes," "belief," "expects," "expect," "intends," "intend," "anticipate," "anticipates," "plans," "plan," to be uncertain and forward-looking. The forward-looking statements contained herein are also subject generally to other risks and uncertainties that are described from time to time in the Company's filings with the Securities and Exchange Commission.
Source: www.ascentsolar.com
Thursday, July 9, 2009
Wednesday, July 8, 2009
QuantaSol unveils 28.3% efficient single-junction solar cell World Record
QuantaSol unveils 28.3% efficient single-junction solar cell World record made public at UK’s Royal Society Summer Science Exhibition
Kingston-upon-Thames UK, June 30th 2009:
QuantaSol Ltd, a new independent designer and manufacturer of strain-balanced quantum-well solar cells, has developed what it believes to be the most efficient single junction solar cell ever manufactured. Developed in just two years, QuantaSol's single-junction device has been independently tested by Fraunhofer ISE as achieving 28.3% efficiency at greater than 500 suns.QuantaSol was established in June 2007 as a spin-out of Imperial College London to commercialise the University’s solar cell IP and offer devices to concentrator Photovoltaic (PV) systems developers. Imperial will be featuring a QuantaSol device as part of its presence at the Royal Society Summer Exhibition in London this week.
“Our technology is the industry’s best kept secret. This is the first time that anyone has successfully combined high efficiency with ease of manufacture, historically a bug-bear of the solar cell industry,” said Kevin Arthur, QuantaSol’s CEO. “We’re now gearing up to provide multi-junction cells of even higher efficiencies as early as Q1 2010.”
QuantaSol’s approach combines several nanostructures, of two or more different alloys, in order to obtain synthetic crystals that overcome the problems associated with current solar cell designs. It also greatly enhances the photovoltaic conversion efficiency.
The company, which has a development laboratory in Kingston-upon-Thames, Surrey, completed a £2m second funding round last week. It will now concentrate on cutting the cost of ownership of solar energy by moving to multi-junction devices.
Source: http://www.quantasol.com/
Monday, July 6, 2009
First Solar goes for reduction in manufacturing cost
First Solar has indicated that its manufacturing cost has now fallen to 93 cents per watt, down 5% in three months and down 28% in a year.
By 2014, it expects to drive down cost per watt to make solar modules to fall to between 52 and 63 cents by 2014. The biggest driver of the lower costs is better efficiency, it said. Production per fabrication line is expected to nearly double over the next five years.
The company believes its ongoing focus on cost reduction enables continued growth even as subsidies decline.
Earlier this year, when the company had reduced its manufacturing cost for solar modules to 98 cents per watt, it had mentioned that its ongoing improvement plans are to continue to drive the efficiency that helps drive costs down, drive the run rates of the factories, and then of course continuing to focus on the raw material costs as it purchases them. Its manufacturing costs have declined two-thirds from over $3 per watt to less than $1 per watt since First Solar began full commercial operation of its initial manufacturing line in late 2004.
In terms of performance this year, First Solar’s first-quarter profits more than tripled as the company inked numerous new power projects and cut its production costs. The company earned $164.6 million in the first quarter, compared with $46.6 million for the same period last year. Quarterly sales were $418.2 million for the three months that ended March 28, up from $196.9 million during the same period last year.
Source: Thin Film Today
Friday, July 3, 2009
World's Largest Solar Power Station Officially Inaugurated
Bonn, Germany (SPX) Jul 03, 2009
On 1 July 2009 the solar-thermal power station Andasol 1, located in the Spanish province of Granada in Andalusia, was officially inaugurated. At the present time, Andasol 1 is the largest solar power station in the world. Researchers at the German Aerospace Centre were heavily involved in the development of key technologies and identified the most suitable location with the help of various tools, including satellite data.
They did this on behalf of Solar Millennium AG, the project development company. In addition, their measuring methods contributed towards the precision design of the parabolic trough collectors.
Climate-compatible power for 200 000 people
Andasol 1 delivers climate-compatible power for 200 000 people. This makes it possible to cut annual emissions of carbon dioxide by 150 000 tons.
There are more than 600 parabolic trough collectors distributed over a total surface area of about two square kilometres, each of which measures 150 metres in length and 5.7 metres in width. These mirrors have a total surface area in excess of 500 000 square metres.
There is also a heat accumulator located in the centre of this gigantic solar field. Here, two giant tanks, measuring 14 metres in height and 36 metres in diameter, are used to store surplus energy during the midday period using liquid salt.
This salt is heated by solar power to temperatures of up to 390 degrees Celsius and this stored heat enables the power station to operate at full power (50 megawatts) for up 7.5 hours after the Sun has set - a key requirement for the future use of solar power stations.
As well as Andasol 1, the first commercially operated power station of its kind, plans are well underway for a further two solar power station at the same location. In the course of this year, Andasol 2 is scheduled to come on stream, also rated for a capacity of 50 megawatts. Andasol 3, also with a 50 MW rating, is expected to follow in the course of 2011.
DLR researchers tasked with finding the ideal location
On behalf of Solar Millennium AG, the project development company, employees in the Solar Research department of the DLR Institute for Technical Thermodynamics (Institut fur Technische Thermodynamik; ITT) at the Plataforma Solar de Almer�a research station located about 50 kilometres from the Andasol site were tasked with identifying a suitable location for the new solar power station.
One key decision-making indicator took the form of the statistical mean values calculated from many years of sunlight readings taken by the DLR from meteorological measurements at ground stations, and sequential satellite data.
Precision boosts energy yield levels
When setting up this system, it is also possible to use high-speed optical measuring processes developed by the DLR for precision production control of the parabolic collectors. Precise and well-aligned parabolic mirrors are able to boost the energy yield by up to 10%, and this makes a key contribution to the cost-effectiveness of a plant of this kind.
Development of the actual collector technology was aided by the DLR taking a leading role in several projects sponsored by the German Environment Ministry. This meant that the industrial partners were supported during the design and testing of collector prototypes and absorber tubes by DLR employees working at the Spanish test centre of Plataforma Solar de Almer�a, located in Almeria.
The total cost of this power station is somewhere in the region of euros 300 million. A key form of early assistance for the Andasol 1 power station was also forthcoming from the European Union, which contributed euros 5 million of funding aid for the preparation and accompanying scientific research. Power from concentrated solar energy
Andasol 1 is a solar-thermal power station and what is known as a parabolic trough power station. In this configuration, the concentrating mirrors take the form of a very long trough with parabolic cross section. The individual elements of this trough, the collectors, are rotated to track the Sun as it moves from east to west.
Sunlight falling on the collector is reflected onto a focal line, where the light energy is concentrated by a factor of up to 80. Absorber tubes run down this focal line.
These steel tubes, surrounded by an evacuated, insulating glass tube, have a special surface coating which is highly effective at absorbing solar radiation and converting it into heat. In this process, temperatures substantially in excess of 400 degrees Celsius are developed on their surface. An oil known as 'thermo-oil' flows through the centre of each steel absorber tube.
This oil is heated to almost 400 degrees, and the collected heat is then directed to a thermal transfer unit in which steam is generated at high temperature and pressure. As in conventional power stations, this steam is then used to drive a turbine that - linked to a generator - then generates electrical power.
Source: Solar Daily
On 1 July 2009 the solar-thermal power station Andasol 1, located in the Spanish province of Granada in Andalusia, was officially inaugurated. At the present time, Andasol 1 is the largest solar power station in the world. Researchers at the German Aerospace Centre were heavily involved in the development of key technologies and identified the most suitable location with the help of various tools, including satellite data.
They did this on behalf of Solar Millennium AG, the project development company. In addition, their measuring methods contributed towards the precision design of the parabolic trough collectors.
Climate-compatible power for 200 000 people
Andasol 1 delivers climate-compatible power for 200 000 people. This makes it possible to cut annual emissions of carbon dioxide by 150 000 tons.
There are more than 600 parabolic trough collectors distributed over a total surface area of about two square kilometres, each of which measures 150 metres in length and 5.7 metres in width. These mirrors have a total surface area in excess of 500 000 square metres.
There is also a heat accumulator located in the centre of this gigantic solar field. Here, two giant tanks, measuring 14 metres in height and 36 metres in diameter, are used to store surplus energy during the midday period using liquid salt.
This salt is heated by solar power to temperatures of up to 390 degrees Celsius and this stored heat enables the power station to operate at full power (50 megawatts) for up 7.5 hours after the Sun has set - a key requirement for the future use of solar power stations.
As well as Andasol 1, the first commercially operated power station of its kind, plans are well underway for a further two solar power station at the same location. In the course of this year, Andasol 2 is scheduled to come on stream, also rated for a capacity of 50 megawatts. Andasol 3, also with a 50 MW rating, is expected to follow in the course of 2011.
DLR researchers tasked with finding the ideal location
On behalf of Solar Millennium AG, the project development company, employees in the Solar Research department of the DLR Institute for Technical Thermodynamics (Institut fur Technische Thermodynamik; ITT) at the Plataforma Solar de Almer�a research station located about 50 kilometres from the Andasol site were tasked with identifying a suitable location for the new solar power station.
One key decision-making indicator took the form of the statistical mean values calculated from many years of sunlight readings taken by the DLR from meteorological measurements at ground stations, and sequential satellite data.
Precision boosts energy yield levels
When setting up this system, it is also possible to use high-speed optical measuring processes developed by the DLR for precision production control of the parabolic collectors. Precise and well-aligned parabolic mirrors are able to boost the energy yield by up to 10%, and this makes a key contribution to the cost-effectiveness of a plant of this kind.
Development of the actual collector technology was aided by the DLR taking a leading role in several projects sponsored by the German Environment Ministry. This meant that the industrial partners were supported during the design and testing of collector prototypes and absorber tubes by DLR employees working at the Spanish test centre of Plataforma Solar de Almer�a, located in Almeria.
The total cost of this power station is somewhere in the region of euros 300 million. A key form of early assistance for the Andasol 1 power station was also forthcoming from the European Union, which contributed euros 5 million of funding aid for the preparation and accompanying scientific research. Power from concentrated solar energy
Andasol 1 is a solar-thermal power station and what is known as a parabolic trough power station. In this configuration, the concentrating mirrors take the form of a very long trough with parabolic cross section. The individual elements of this trough, the collectors, are rotated to track the Sun as it moves from east to west.
Sunlight falling on the collector is reflected onto a focal line, where the light energy is concentrated by a factor of up to 80. Absorber tubes run down this focal line.
These steel tubes, surrounded by an evacuated, insulating glass tube, have a special surface coating which is highly effective at absorbing solar radiation and converting it into heat. In this process, temperatures substantially in excess of 400 degrees Celsius are developed on their surface. An oil known as 'thermo-oil' flows through the centre of each steel absorber tube.
This oil is heated to almost 400 degrees, and the collected heat is then directed to a thermal transfer unit in which steam is generated at high temperature and pressure. As in conventional power stations, this steam is then used to drive a turbine that - linked to a generator - then generates electrical power.
Source: Solar Daily
Thursday, July 2, 2009
Record-breaking solar cells are tailored to their location
The burning hot sun at the equator is a far cry from the weak sunlight that reaches higher latitudes. To make the most of such different conditions you need specially tailored solar cells, according to UK firm Quantasol.
So the company has come up with a new solar cell design that can be tuned to the light at a particular latitude, and in the process broken a 21-year-old efficiency record for one type of solar cell.
Semiconductor materials such as gallium arsenide (GaAs) are more efficient at converting light to electricity than the cheaper silicon cells most common today. First used in space, GaAs solar cells are beginning to find uses on Earth too.
But the uniform light conditions in space aren't matched on the ground. The atmosphere acts as a filter, so the light reaching Earth varies from place to place and with changing atmospheric conditions.
Tuned in
Quantasol has now created GaAs solar cells that can be tuned to the prevailing light conditions of a particular place, to get the most out of the cells wherever they are.
To do that, the firm added indium gallium arsenide (InGaAs) to pores just a few nanometres across on the surface of their cells, called quantum wells. Like the GaAs that makes up the rest of the cell, they can absorb light to produce electric current. But they do so at very specific frequencies.
The pores can be tuned to absorb light at the frequencies that are most common in a particular place but aren't absorbed well by GaAs. Over time this strategy should extract more energy than an off-the-shelf solar cell.
World record
After the quantum wells have been tuned, the GaAs solar cell absorbs more of the incoming light than previous devices. The peak efficiency of the new cell is 28.3 per cent when exposed to light 500 times as strong as normal sunlight, a figure that has been confirmed by the Fraunhofer Institute of Solar Energy in Germany.
That may only be one-tenth of a percentage point higher than the previous world-record holder, but it's the first advance in 21 years.
Commercial silicon solar cells are much cheaper than GaAs, but have an efficiency of just 10 to 12 per cent and are also bulkier. The Quantasol device can cope with much brighter light without becoming overloaded, making it possible to use a very small solar cell to absorb light collected by a system of cheap lenses and mirrors.
But more important than the peak efficiency is that the new cells can generate more electrical energy over the course of days and weeks, says Kevin Arthur, Quantasol CEO.
"The commercial market doesn't just want high efficiency, they want the device to be optimised to the environment," he says. "In the past we measured performance in dollars per watt. Now it's cents per kilowatt-hour that's more important."
Quantasol will showcase its new device at the UK's Royal Society Summer Science Exhibition in London this week.
Source: www.newscientist.com
So the company has come up with a new solar cell design that can be tuned to the light at a particular latitude, and in the process broken a 21-year-old efficiency record for one type of solar cell.
Semiconductor materials such as gallium arsenide (GaAs) are more efficient at converting light to electricity than the cheaper silicon cells most common today. First used in space, GaAs solar cells are beginning to find uses on Earth too.
But the uniform light conditions in space aren't matched on the ground. The atmosphere acts as a filter, so the light reaching Earth varies from place to place and with changing atmospheric conditions.
Tuned in
Quantasol has now created GaAs solar cells that can be tuned to the prevailing light conditions of a particular place, to get the most out of the cells wherever they are.
To do that, the firm added indium gallium arsenide (InGaAs) to pores just a few nanometres across on the surface of their cells, called quantum wells. Like the GaAs that makes up the rest of the cell, they can absorb light to produce electric current. But they do so at very specific frequencies.
The pores can be tuned to absorb light at the frequencies that are most common in a particular place but aren't absorbed well by GaAs. Over time this strategy should extract more energy than an off-the-shelf solar cell.
World record
After the quantum wells have been tuned, the GaAs solar cell absorbs more of the incoming light than previous devices. The peak efficiency of the new cell is 28.3 per cent when exposed to light 500 times as strong as normal sunlight, a figure that has been confirmed by the Fraunhofer Institute of Solar Energy in Germany.
That may only be one-tenth of a percentage point higher than the previous world-record holder, but it's the first advance in 21 years.
Commercial silicon solar cells are much cheaper than GaAs, but have an efficiency of just 10 to 12 per cent and are also bulkier. The Quantasol device can cope with much brighter light without becoming overloaded, making it possible to use a very small solar cell to absorb light collected by a system of cheap lenses and mirrors.
But more important than the peak efficiency is that the new cells can generate more electrical energy over the course of days and weeks, says Kevin Arthur, Quantasol CEO.
"The commercial market doesn't just want high efficiency, they want the device to be optimised to the environment," he says. "In the past we measured performance in dollars per watt. Now it's cents per kilowatt-hour that's more important."
Quantasol will showcase its new device at the UK's Royal Society Summer Science Exhibition in London this week.
Source: www.newscientist.com
Swiss team unveil pioneering solar plane
Geneva (AFP) June 26, 2009
Round-the-world balloooning pioneer Bertrand Piccard unveiled his solar-powered aircraft in Switzerland on Friday, ready for another trend-setting circumnavigation of the globe powered solely by the sun.
The wasp-shaped prototype of Solar Impulse, with the wingspan of a jumbo jet, was rolled out before some 800 guests at an airfield near Zurich after six years of development.
Ten years after Piccard and Briton Brian Jones achieved the first non-stop flight around the globe in the Orbiter balloon, the Solar Impulse team are aiming to demonstrate that reliance on renewable energy is not a pipedream.
"If an aircraft is able to fly day and night without fuel, propelled solely by solar energy, let no one come and claim that it is impossible to do the same thing for motor vehicles, heating and air conditioning systems and computers," Piccard said.
Although computer simulations have been tried out, the prototype HB-SIA will make its maiden test flight by the end of this year.
Its mission is to test the feasibility of a complete flight sequence through two days and one night, propelled only by solar energy, and pave the say for a second aircraft's bid to fly around the world in five stages in 2012.
The Swiss adventurer -- who is again joined by Jones -- said the idea emerged after that 19 day hot air balloon trip, when Orbiter was partly kept aloft by fuel canisters even if the wind ensured its progress eastwards.
"That historic success could have turned sour because of the lack of fuel," Piccard said at the Dubendorf airfield.
"That's why we took the decision to to attempt a trip around the world without relying on fossil fuels," he explained.
The seemingly flimsy carbon fibre concentrate of new technology has a 63.4 metre wingspan but weighs little more than a medium sized car.
Some 12,000 solar cells spread over its slender wings are meant to keep it aloft, fuelling four tiny ten horsepower electric motors and 400 kilogrammes of batteries that are, unusually, meant to keep it going overnight.
Wedged in the narrow cockpit, the lone pilot will also be helped to fly Solar Impulse by some novel control technology.
"Those are the wings of hope. They are immense, as is the challenge we have to meet in climate protection," said Swiss Transport, Energy and Environment Minister Moritz Leunberger.
Source: Solar Daily
Round-the-world balloooning pioneer Bertrand Piccard unveiled his solar-powered aircraft in Switzerland on Friday, ready for another trend-setting circumnavigation of the globe powered solely by the sun.
The wasp-shaped prototype of Solar Impulse, with the wingspan of a jumbo jet, was rolled out before some 800 guests at an airfield near Zurich after six years of development.
Ten years after Piccard and Briton Brian Jones achieved the first non-stop flight around the globe in the Orbiter balloon, the Solar Impulse team are aiming to demonstrate that reliance on renewable energy is not a pipedream.
"If an aircraft is able to fly day and night without fuel, propelled solely by solar energy, let no one come and claim that it is impossible to do the same thing for motor vehicles, heating and air conditioning systems and computers," Piccard said.
Although computer simulations have been tried out, the prototype HB-SIA will make its maiden test flight by the end of this year.
Its mission is to test the feasibility of a complete flight sequence through two days and one night, propelled only by solar energy, and pave the say for a second aircraft's bid to fly around the world in five stages in 2012.
The Swiss adventurer -- who is again joined by Jones -- said the idea emerged after that 19 day hot air balloon trip, when Orbiter was partly kept aloft by fuel canisters even if the wind ensured its progress eastwards.
"That historic success could have turned sour because of the lack of fuel," Piccard said at the Dubendorf airfield.
"That's why we took the decision to to attempt a trip around the world without relying on fossil fuels," he explained.
The seemingly flimsy carbon fibre concentrate of new technology has a 63.4 metre wingspan but weighs little more than a medium sized car.
Some 12,000 solar cells spread over its slender wings are meant to keep it aloft, fuelling four tiny ten horsepower electric motors and 400 kilogrammes of batteries that are, unusually, meant to keep it going overnight.
Wedged in the narrow cockpit, the lone pilot will also be helped to fly Solar Impulse by some novel control technology.
"Those are the wings of hope. They are immense, as is the challenge we have to meet in climate protection," said Swiss Transport, Energy and Environment Minister Moritz Leunberger.
Source: Solar Daily
Wednesday, July 1, 2009
ADB Deems Clean Energy Projects as Risky
The thrust to create so-called “clean” energy projects is hampered by poor financial risk perception, need for big capital investments and policies that still favor conventional sources of energy, an official of the Asian Development Bank (ADB) recently announced.
Stating at the Asia Clean Energy Forum at the ADB headquarters this week, Private Sector Operations Department Director-General Philip Erquiaga said these three impediments are what the bank will take into consideration drafting a new energy policy.
Mr. Erquiaga explained the perception of risk is because of the view regarding clean energy technology is “experimental,” creating it financially risky as an investment.
Rizal Commercial Banking Corp. Senior Vice-President for financial markets Marcelo E. Ayes agreed, evaluating that “many of the companies producing this technology are start-up and will have difficulty accessing credit because they don’t have a track record.”
Noting further that these projects are “capital-intensive,” Mr. Ayes stated the “risk is huge without certain profit even in the long term.”
He said that a well-designed feasibility study and a guarantee by the government, ADB or the World Bank are few of the factors that could better risk perception.
Energy Assistant Secretary Mario C. Marasigan, chief of the Renewable Energy Bureau, stated the government has addressed the concern over policy drawbacks, citing Republic Act 9513, or the Renewable Energy Act of 2008, which provides fiscal and non-fiscal incentives for renewable energy investors, involving tax credits on domestic capital equipment and services, special tax rates on equipment and machinery, amidst others.
This will bring down the price of technology and make ‘clean,’ renewable energy competitive with conventional energy. The law is a clear indicator that this government prioritizes renewable energy.
Source : Energy Business Daily
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