Renewable Power News » Photovoltaics News about Solar, Wind and alternative green power technologies Sun, 28 Oct 2012 17:30:29 +0000 en hourly 1 The Right Renewable Energy Policies – Would Make The Sun The Prime Source of Energy Sun, 28 Oct 2012 17:30:29 +0000 Jimmy Eriksson Concerning public policy, solar power is becoming more and more attractive (in the economics perspective), and currently it can be considered the most promising development to be initiated. For example, in about one year and half, the prices of PV (photovoltaic) modules dropped 40 percent and the good news: the price tends to keep dropping in the middle term.

Using the correct policy vision it would be possible to influence the path-breaking related to improvements in tapping the solar power in order to massively increase the public finances. This would reduce smoke emission and even a reduction on domestic pollution would be possible.

Currently, experts say that the costs associated with solar power are dropping gradually, fast and significantly. Now, the solar power is almost compared to the power provided by fossil fuels. However, fossil fuels produce great amounts of pollution, a disadvantage solar power does not possess.

In a close future, energy from the regular electric grid will not be much cheaper than the solar energy that is currently installed. The actual policy process needs to be one step ahead from this kind of grid parity on the cars and develop new and innovative ways capable of stopping this quest for subsidies on oil-related products like kerosene and diesel.

To better understand this, imagine diesel, currently it is the most commonly used petrol-product and the process responsible for setting its price, remains very unclear and the price of imported oil keeps increasing without fixed rules and limits.

However, policy indecision about revising the current prices leads us to incorrect administered prices, not to mention an incredible misuse of resources (not only budgetary resources.)

Nowadays, one of the most important reasons for such populism on diesel is that it makes pumps for agriculture work, and it would be politically unacceptable to raise its prices. Since it would have a tremendous negative impact on the primary sector. That is why a new national program must be developed in order to promote solar-energy usage by the primary sector and by doing this. The primary sector would overpower its dependency on diesel. Anyway, there is a strong and important need to provide the farm sector with a reliable source of energy (to be used by factories, pumps, lights, etc.) this would be done by providing rural power from the grid and using parallel phasing in order to meet the farm sector’s energy requirements.

Due to the initial high costs that would be required for this impressive paradigmatic change involving solar-power pumps it would be highly recommended to put into practice an effective finance scheme consisting on multilateral funding and targeted subventions if it is needed. The main objective is to move forward with solar pumps and in the process, diesel prices would be decreased.

We don’t need multiple oil products subsides. For example, surveys indicate that kerosene is mostly used for lightening purposes; however, it is diverted to modify automotive fuel.

What it is really needed is an expansion of solar-powered lanterns instead of subsided kerosene lightening. Those solar pumps and lanterns could result in 1% saving on the budget for subsides, or even ten percent of the total spending of the budgetary center.

On the other side, we can see some other measures that could result in a great amount of energy and money saving: bicycles and rickshaws moved by solar energy would make mobility easier in a hot country like ours. In the urban areas, these rickshaws would be powered by solar energy, and they could be used as live screens for products and service’s advertisement.

Source: Economic Times (India times)

© Jimmy Eriksson for Renewable Power News, 2012. | Permalink | No comment

Add to

Search blogs linking this post with Technorati

Want more on these topics ? Browse the archive of posts filed under Alternative Power Sources, Photovoltaics, Solar Power.

]]> 0
Delhi & Its Monuments Going Green With Solar Power Sun, 21 Oct 2012 13:54:30 +0000 Jimmy Eriksson The city of Delhi posses plenty of well-known monuments that will be illuminated by solar energy. It appears that the number of environment-friendly monuments in Delhi is growing day by day.

Over the last three years, the Delhi government acquired experience while promoting the utilization of environment-friendly sources of energy, such as the solar energy.

The Delhi government is planning to install solar energy to replace conventional electric power used to illuminate various UNESCO World Heritages Sites. Those sites are: the 13th century Qutub Minar; the 16th century Tomb of Humayun and the 17th century red sandstone Red Fort. All these sites are only three of the six sites where the Delhi government is planning to use solar energy A Delhi government official said that they were planning to use and install PV cells (SPV systems that can convert sunlight into electricity) to replace the conventional electrical power by environment-friendly sources of energy to illuminate different UNESCO heritage sites and various historic monuments where the number of visitors is high. The Delhi government official added that, during the nocturnal period, those monuments would be also illuminated with solar energy.

This measure has been taken to promote the use of environment-friendly sources of energy (in this particular case, solar energy) in the capital.

Going back to 2009, they installed two solar power plants in order to illuminate two touristic spots: the Safdarjung’s Tomb and the Jantar Mantar.

The Jantar Mantar solar power plant, generates 9 KW of power, the price to install it was Rs. 25 lakh. On the other side, the solar power plant of Safdarjung’s Tomb produces a value close to 10.4 KW of energy, and it can illuminate the site for almost five hours. The Delhi authorities saw the impressive success of these two measures, and that is why they decided to expand this ‘solar power measure’ to other touristic sites.

A different government official told that sites like Qutub Minar and the Humayun’s Tomb and the Red Fort are under the authority of the Archaeological Survey if India; which means that those sites are protected sites. That is why they will have to acquire permission from the Archaeological Survey to install solar energy.

An official from the Archaeological Survey of India said that they would consider the proposal, when the government formulates it. The official told that they had two solar power plants (installed at Safdarjung’s Tomb and Jantar Mantar). However, if the government makes a proposal to illuminate other touristic and historic sites with solar energy, they will consider it and find if they can go forward. This will also involve a full analysis on how much electric energy the power plants will be capable of producing.

The government is also planning to install solar energy to illuminate the Old Fort, Lotus Temple and Jama Masjid. A Delhi government official told that they were negotiating with the Gurdwara Parbandhak Committee in order to set up solar energy at Gurdwara Bangla Sahib.

The Ministry of New and Renewable Energy has a program named Special Area Demonstration Project. It was created to encourage states to promote and disseminate the use of renewable sources of energy and also to find alternative sources of energy. The official told that any department or organization would get subsidy for the installation of SPV systems. According to a Delhi government official, the Energy Efficiency and Renewable Energy Management Center from the Delhi government would be responsible for the installation of those solar power plants, because it is the nodal agency for that program.

The cost associated with the installation of a 1 KW solar power plant (that requires an area of 10 square miles) is over Rs. 2000,000. The government official also told that solar energy would be a great source of alternative energy if Delhi faces a severe power demand.

Source: ZEE News

© Jimmy Eriksson for Renewable Power News, 2012. | Permalink | No comment

Add to

Search blogs linking this post with Technorati

Want more on these topics ? Browse the archive of posts filed under Photovoltaics, Renewable Power, Solar Power.

]]> 0
Price of Solar Panels Falling by 80% Sun, 21 Oct 2012 13:21:32 +0000 Jimmy Eriksson Managing Director Arif Allauddin from Alternative Energy Development Board (AEDB) notifies that the prices of solar panel have shown a downward slope in prices over the recent half decade. It has dropped down by 8o% in half decade making it attractive to customers.

This should be considered as an opportunity to switch to solar energy and to tackle the alarming issue of energy crisis. Allauddin also stressed on his word; in the International Exhibition and Conference on Alternative Energy and Energy Efficiency organized by the Renewable and Alternative Energy Association of Pakistan here on Saturday.

Presently, our country is generating power at Rs.20. per unit, therefore, encountering such intricacies, which cause crisis in the economy. Alladin remarked, “We can have more affordable solar applications with this positive reduction in price.”

He proposed that solar panel could benefit the citizens in the daytime despite the factor that they are expensive than battery.

Intellectual property organization (IPO) Hamidullah Jan Afridi urged the government to announce subsidies and consumer-friendly policies in favor of renewable-energy resources to overcome energy crisis.

The government has declared a tariff on wind power plants, but it has yet to declare tariffs on solar energy.

He spoke sadly about these two lacking and elucidated that residential upfront tariffs coupled with easy financing options are essential factors to develop renewable-energy culture.

He said, “We need to reckon how to make renewable-energy financing and financing for rural electrification available.”

He is also very optimistic as enforcing and encouraging customer with FITs (feed in tariffs) will give more financial grounds to support the growth of solar energy in the country and across the world.

There are diverse renewable sources that exist to ponder, including bio energy, waste to energy, and hydro power. The government has taken the initiative and rated zero to all the renewable-energy equipment and components.

Source: Tribune Pakistan

© Jimmy Eriksson for Renewable Power News, 2012. | Permalink | No comment

Add to

Search blogs linking this post with Technorati

Want more on these topics ? Browse the archive of posts filed under Photovoltaics, Solar Power.

]]> 0
IMEC: New Thin-Film Being Developed To Exploit Solar Energy Sun, 14 Oct 2012 21:25:15 +0000 Jimmy Eriksson The European Union and the regional governments co-fund the Solar Flare project in the Eindhoven-Leuven region. It focuses on increasing the efficiency and reducing the cost in the development of thin-film solar energy.

One of the emphasized points in the European Climate policy and the EU2020 strategy is the large-scale development and application of solar energy. A potential future alternative to the existing Si-PV technology is through the development of a thin-film PV technology. Reducing the cost of harnessing solar energy via this technology is the aim of the Solar Flare project. Currently, thin-film solar cells have an efficiency of around 13% for modules. Therefore, to make sure that the thin-film PV is a viable alternative to Si-PV, the efficiencies should be similar to today’s mainstream modules of 17%.

The project will definitely encourage and promote networking in this area. The Flare Solar project will stimulate the development of alternative thin-film and CIGS technologies. These are based on novel materials and generic technologies, which are significantly important for the industry. One such example is transparent conductive layers, which is under investigation. Apart from cost, aesthetic and response to indirect light plays an important role in the integration of solar cells in windows. Hence this type of surface must enable niche-applications. A specific cost of Ownership model for TF-PV will be developed and put into use in order to facilitate estimation of the potential for local industries to develop thin film PV technologies.

Monique Swinnen, (Deputy of the province of Vlaams-Brabant (Flanders) and member of the steering group Interreg Flanders-The Netherlands), says that the solar energy will undoubtedly play an important role in the EU2020 strategy. In this global market, cross-border collaboration is essential to strengthen the position of their local industry, and they will continue supporting open innovation in the region.

Solliance is an initiative to leverage the complementarities of the Solliance partners and strengthen the competitive position of the Eindhoven-Leuven-Aachen triangle (ELAT region). The project runs within the framework of Solliance, and is a relevant player in the global thin-film PV market. Creating synergy among more than 250 researchers, Solliance aligns different research programs, shares state-of-the-art infrastructure and assures close cooperation within the solar business community.

Along with the European Union, the inter-regional Solar Flare project is also funded by Interreg Flanders-Netherlands, Ministry of Economic Affairs, Agriculture and Innovation (The Netherlands), and the provinces of North Brabant (The Netherlands) and Flemish Brabant and Limburg (Belgium). ECN, TNO, Imec, Holst Centre, TU/e and the University of Hasselt/IMO are the partners within the project.

Some Insight on IMEC

By leveraging its scientific knowledge with the innovative power of its global partnerships in ICT, healthcare and energy, Imec performs world-leading nano-electronics research and also delivers industry-relevant technology solutions. By working in a unique high-tech environment, its diverse top talent is committed to provide the building blocks for a better life in a sustainable society.

Headquartered in Leuven, Belgium, Imec has its offices in the Netherlands, Taiwan, US, China, India and Japan. Including more than 600 industrial residents and guest researchers, it has a staff of close to 2000 people. Imec’s revenue (P&L) was about 300 million euro in 2011. You can retrieve more information on

Source: IMEC and AzoSensors

© Jimmy Eriksson for Renewable Power News, 2012. | Permalink | No comment

Add to

Search blogs linking this post with Technorati

Want more on these topics ? Browse the archive of posts filed under Global Energy, Photovoltaics.

]]> 0
Planning For Large Scale Solar Energy System in Saudi Arabia Sun, 07 Oct 2012 20:27:22 +0000 Jimmy Eriksson Saudi Arabia, although a leading purveyor of fossil fuels for the rest of the world, it has always been under pressure on oil demand supply ratio. This has ultimately led the nation to explore and opt for other sources of fuels. Saudi Arabian government has already made public its plan to build its first expansive solar-energy system. This will be one of their most ambitious plans hosted in the city of Mecca.

Oil controversies lead Saudi Arabia for non-conventional alternatives.
The location near the equator exposes Saudi Arabia with a huge amount of solar radiations. This potential has been of interest to the government since the growing pressure surrounding oil and environmental concerns needs to be resolved. Saudi Arabia has received up to 20 bids from different solar-energy companies and other organizations, which are looking forward to participate in the country’s ambitious plan. The government will select one of the bidders by January 2013.

New Solar, Wind and Biomass Plants In the Pipeline

The ongoing project of the country to build a power plant which beholds 385 gig watt capacity with the aim to generate electricity not only through fossil fuels, but also from clean sources of energy. The same plant will generate 100 megawatts from solar energy along with wind energy and biomass according to the government officials.

Project is the first step Saudi Arabia has taken on solar energy.

This is the first time that Saudi Arabia will be taking a conservative approach towards energy reforms. The country also expects much better benefits through solar energy than the wind-energy systems implied in the past. This solar power plant is being planned to be developed in Mecca, where it will serve the town with electricity.

Source: Hydrogen Fuel News

© Jimmy Eriksson for Renewable Power News, 2012. | Permalink | No comment

Add to

Search blogs linking this post with Technorati

Want more on these topics ? Browse the archive of posts filed under Alternative Power Sources, Photovoltaics, Solar Power.

]]> 0
New Solar Panels Will Be Built With Common Metals Sun, 23 Sep 2012 14:55:25 +0000 Jimmy Eriksson Sunlight reaching American households is enough to supply at least 50 percent of the total electricity needs of America. Recently, scientists concluded that progress in the field of affordable solar-energy technology is fundamentally necessary for people to opt to invest in roof shingles that can generate electricity power. Actually, shingles that are capable of generating electrical power from the sunlight, can be installed like traditional roofing. This is currently a commercial reality. However, new advance in science can allow solar cells to be constructed from materials that are earth-abundant. This would make solar cells more affordable and also facilitate the integration of PV (Photovoltaic) into different parts of the building.

At the 244th National Meeting & Exposition of the American Chemical Society, the scientists’ report was part of the symposium on sustainability. Below are some of the other abstracts from other presentations.

One of the lecturers, Dr. Harry A. Atwater told that sustainability is developing technology that has the capacity of being fruitful over the long-term. This implies introducing resources that can fit today’s needs naturally.

Materials like zinc and copper are abundant and less-expensive materials, and that is what the new PV technology will use. They will use these abundant materials instead of the so-called rare-materials like gallium and indium. Rare materials are costly and also supplied mostly by foreign countries. China is withdrawing more than ninety presences of these rare substances; necessary for magnets, batteries for hybrid vehicles, high-tech products and electronics. Dr. James C. Stevens and Atwater are relating efforts to replace high-cost and rare material to produce PV cells with low-cost materials that are abundant and of course more sustainable.

Dr. Atwater is a physicist with the California Institute of Technology; Dr. Stevens is a chemist at the Dow Chemical Company; together, they are leading a partnership between both organizations in order to develop new electronic materials that can be used in devices for solar energy conversion. Both said that the development and testing of the new devices broke records when it comes to voltage and the electrical current; these conversion devices contain copper oxide and zinc phosphide. Atwater said that all these advances demonstrate that materials like copper oxide and zinc phosphide will be capable of reaching high efficiency while producing electrical power at a lower cost; according to Atwater, such goal could be accomplished in as little as 20 years!

Dr. Stevens supported the development of the Dow’s PowerHouse Solar Shingle that was launched in 2011 (October). It can generate electricity power through traditional roofing. These shingles use gallium, indium and copper diselenide PV technology but now the group is looking forward to incorporating sustainable and abundant materials into the Dow’s PowerHouse Solar Shingle in order to make them even more commonly accessible.

Dr. Stevens stated that the U.S. possessed 69 billion square feet of residential rooftops. The rooftops have all the necessary conditions to generate electricity from the sun. In fact, the solar light that falls on those large areas of rooftops can generate sufficient electricity to satisfy at least half (50%) of the U.S. energy needs. Some people go further and estimate a value close to 100%. With the technology that uses materials widely available on Earth, the electrical energy produced would be significantly more environmentally friendly.

In the symposium, other interesting presentations took place; here are some of them:

• In order to increase the production of earth-rare elements using greener and cheaper technology in the United States, Molycorp (mining company) is modernizing and expanding its facilities (Mountain Pass, Colo).

• An overview was conducted on the different challenges when it comes to maintaining a sustainable source of “critical materials” from rare elements such as indium vs abundant elements such as copper.

• Oil, mining and gas drilling produces 800 billion gallons of wastewater each year. In the symposium, they discussed a new material to recover rare materials from that wastewater.

Source: Science Codex

© Jimmy Eriksson for Renewable Power News, 2012. | Permalink | No comment

Add to

Search blogs linking this post with Technorati

Want more on these topics ? Browse the archive of posts filed under Alternative Power Sources, Photovoltaics, Solar Power.

]]> 0
Japan & The Next Solar Technologies Sun, 02 Sep 2012 23:46:08 +0000 Jimmy Eriksson Japan is currently working hard t on nuclear power. For that matter, their goal is to increase the number of project involving alternative energy. This includes initiative such as the recent solar collector, located in the Miyazaki Prefecture (University of Miyazaki’s Kibana Campus). The faculty of engineering of the university successfully completed the solar thermal collector. The solar thermal collector is being called the most leading edge at a worldwide scale and the biggest in Japan.

The university wants to create a major research center for solar energy; that is why they are currently attempting to develop new technologies in this field. This university is attempting to build a bigger research center for solar energy; since the Miyazaki, region is indeed the sunniest region of the entire nation. The campus is now operating its solar equipment, and it has four different types of large facilities. The two facilities were built by a different company. Together, they have 179 kilowatts of maximum power output. This is enough to satisfy about 3 percent of the electric needs of the campus. The university is collaborating alongside with the industry in a combined research that as the particularity advantage of comparing the performance of the different systems under equal conditions.

In the South corner of the campus, a new solar thermal collector (beam down) has been completed. Eight hundred and eighty mirrors with 50 centimeters each are able to track the sun completely automatically. A tower of 16 meters will gather the sunlight in a reflector with 4.3 meters of wide. The reflector is like a bowl that is upside-down. Later, the light is irradiated (beamed-down as you prefer) through the focal point below the “bowl”. This accumulates all the energy in the form of thermal energy (heat), and that will result in thousand times more energy than that produced by the direct sunlight.

Technology patented by Mitaka Kohki Co. (optical equipment producer, Mitaka, Tokyo). The technology was used by local companies established in the Miyazaki Prefecture in order to build and assemble the tower and the mirrors.

In the United States and other nations’ conventional designs for solar thermal power generation have been commercialized and used. However, they can only reach a temperature of 600 degrees Celsius. Katsushige Nakamura (President of Mitaka Kohki) proudly said that their new design “beam down” can easily reach a temperature of 1400 degrees Celsius. Such temperature will be capable of breaking down water (H2O) and create hydrogen. This can thereafter used to fuel cells of power. Generally, to generate such high temperature and maintaining it, burning of oil and other fossil fuels is required. To circumvent this situation; the Niigata University has the necessary technology to produce hydrogen using solar-energy collection/ It is doing a joint study between the university and the industry in this field.

Japan has no raw silicon to use in the production of solar cells. Japan is totally dependent on the imports of this crucial resource. This is why they are hoping that the new solar-energy collectors can be transformed into furnaces (solar furnaces). This might enable them to use the sun as the unique source to produce the necessary heat. If the idea is successful Japan will have a source of cheap and raw silicon to use in the solar cells’ production. In the last year, expert on semiconductor engineering, Professor Kensuke Nishioka had success when he tried to produce extremely pure silica using volcanic soil from a deposit located in Kyushu (south). Silica becomes silicon when its oxygen is removed from it. The Professor said that if the solar furnace was capable of reaching a temperature of 1800 degrees Celsius. This is the necessary temperature to remove oxygen from silica and transform it into silicon. If this process is successful, it will drastically reduce the cost of solar cells up to a third of their current price.

Professor also adds that the current method involves using a furnace (feed by electrical power). Professor says half of the total price of the silicon comes from the cost of electrical power. According to the Professor, China conquered the solar energy international market because they produce extremely pure silica from various natural deposits and in that country, the electric power is cheap.

Nakamura stated that the deserts of Africa can be a potential business because sand has much more silicon, in comparison to the silicon found in volcanic soil. If they use the solar potential of such areas, the deserts of Africa can become factories of silicon. He said that medium and small companies could easily enter in the solar-energy sector that has been monopolized by large companies with a strong financial power.

These interesting projects are part of a bigger project named Photovoltaic Generation Project. This has been launched in the academic year of 2009. This interdisciplinary project covers different variables of the project, from the materials to the practical applications. This will surely interest act as operators. This is the first curriculum in Japan’s specialization process in solar power. This project is also training people who are going to work in industries related to solar power.

The university has a wide range of courses; from lectures for researchers and professionals to even a lab dedicated on children. An elementary student, who attended the beginner’s course of this school, said that it was amazing to see how they can send solar cells to space in order to generate solar power. The student demonstrated a great interest in the near-future technologies presented by Professor Nishioka. Technologies related to solar energy are constantly growing, and this market continues to expand itself. The project leader, associated Professor Kenji Yoshino is very positive about the project.

Yoshino said that China is overpowering them. However, the requests for Japanese technology are high. For Yoshino, creating interdisciplinary groups is a very urgent concern to turn such a situation around. They are planning to demonstrate their strength. They also plan to make the Miyazaki University into a powerful center of solar-energy research.

Source: AJW and ASAHI

© Jimmy Eriksson for Renewable Power News, 2012. | Permalink | No comment

Add to

Search blogs linking this post with Technorati

Want more on these topics ? Browse the archive of posts filed under Alternative Power Sources, Photovoltaics, Solar Power.

]]> 0
China’s 2015 target for solar power Increased by 40% Thu, 30 Aug 2012 00:55:38 +0000 Jimmy Eriksson A Chinese government agency told that the cost lowering and new regulations in the field of solar energy will allow this sector to grow stronger and more profitable. The consequence of these events, China is currently climbing its 2015 objective on solar-energy capacity by 40% (approximately 21 GW). This country is the biggest exporter of PV (photovoltaic) products (looking at worldwide scale) it also houses important companies like Suntech Power and LDK Solar as well. The Chinese government decided to reduce the cost for energy fed inside the national grid (measures taken in 2011) this will result in lower expenses for solar-energy developers. That aided a projected quadrupling of installed capacity (solar power) to a value that exceeded the 2 GW in the last year (2011).

The government media stated that the most important energy producers and grid companies as well, would be subject to only a few (and minimal) requirements to use renewable sources. This will surely help solar firms. The NEA (the Chinese National Energy Administration) is aiming to a much bigger objective (concerning installed solar-energy capacity) than those 15 GW reported by government media. The NEA’s goal is to achieve more than 20 GW of installed solar capacity. The target was established after the well-know nuclear crisis in Japan last year.

In a publication on its own website, the National Energy Administration said that renewable energy in 2015 would be equivalent to 478.000.000 tons of oil; doing the math this will result in more than 9.5 percent of the total consumption of China’s energy. The goal for hydropower capacity remains the same (290 GW in 2015); 260 GW would come from regular hydropower plants; the others 30 GW would come from pumped storage hydropower facilities. Wind power (on-grid) targets also remain the same (100 GW in 2015); 5 GW will come from wind farms located on the sea.

Source: Reuters

© Jimmy Eriksson for Renewable Power News, 2012. | Permalink | No comment

Add to

Search blogs linking this post with Technorati

Want more on these topics ? Browse the archive of posts filed under Alternative Power Sources, Photovoltaics, Solar Power.

]]> 0
Solar Energy Conversion – Improvement Now A Reality Sat, 25 Aug 2012 14:41:24 +0000 Jimmy Eriksson According to a recent research headed by chemist Xiaoyang Zhu (University of Texas at Austin), the productivity of conventional cells (solar cells) can considerably be increased.

According to the new findings of chemist, Xiaoyang Zhu and his team using an organic plastic semiconductor material it is possible to increase the number of electrons collected from photon (of sunbeams) by 100%. Xiaoyang Zhu who is also professor of chemistry mentioned that a plastic semiconductor solar cell brings advantages. One of these advantages is the capability of producing photovoltaic cells (of this type) in a great volume at a low cost. Allied with the extensive capabilities concerning molecular design and molecular synthesis; their recent findings can open door to a new method of solar-energy conversion with more efficiency and lower prices.

In the 16th of December, Zhu along with his team published their innovative finding in Science.

The current theoretic efficacy of a silicon cell is about 31%; this is because most of the solar energy, which impacts the solar cells is too high to be transformed into electricity. This energy is later lost in the form of thermic energy. This results in about 69% of lost energy. Capturing such energy or “hot electrons” would increase the efficacy of the conversion of solar energy into electrical energy to a value close to 66%!

Going back to 2010 Zhu and his team published a research in Science; using semiconductor Nano crystals they demonstrated “hot electrons” could be captured. According to Zhu, reliable technology based upon that study is very interesting.

Zhu said that when considering the creation of new material or a new device (especially solar-energy technology) some problems appeared. One of those problems when seeking for more efficiency is that the upper mentioned 66% effectiveness can be accomplished only if a highly concentrated sunlight is used. When such problems occur, a solution has to be envisaged. The team fast found an alternative to avoid the problem. They found out that a photon produces a dark quantum or “shadow state” and then two additional electrons can be caught in order to produce more energy in the semiconductor. Xiaoyang Zhu told that if such mechanism is used, they can increase the effectiveness of the cells to 44% without needing to focus a solar beam. This will definitely increase international interest in solar energy.

This study was supported by the DOE (Department of Energy) and the National Science Foundation. Wai-lun-Chan (postdoctoral associated at the Zhu’s group) also lead the research team assisted by other postdoctoral colleagues named: Askat Jailaubekov, Loren Kaake, Luis Miaja-Avila and Manuel Ligges.

Source: University of Texas, Science Daily and Science Mag (Research Article)

© Jimmy Eriksson for Renewable Power News, 2012. | Permalink | No comment

Add to

Search blogs linking this post with Technorati

Want more on these topics ? Browse the archive of posts filed under Photovoltaics, Solar Power.

]]> 0
Britain’s Power Demand for 1000 Households to Be Met with Solar Panels Sat, 04 Aug 2012 15:33:18 +0000 Jimmy Eriksson Power demand in Britain may soon be fully met with the launch of 30 acres of solar panels to light over 1,000 homes.


• Expansive five-acre farm to be installed with 5.6 miles of frames and 1,800 solar panels
• Solar power requires less infrastructure compared to wind farms
• The vast farm to power an estimated 1,000 residences

The UK energy sector has been boosted greatly with the launch of the largest solar farm that will have an energy production sufficient to meet the needs of 1,000 homes. The solar panels will, however, extend across miles of farmland.

The project was realized after the deliberation of various stakeholders in the energy industry, and they graced the inauguration of the project which will use 1,800 solar PV panels that will be mounted on 5.6 miles of masts.

The 5 MegaWatt power project extends across a staggering 30 acres on the Cadland estate in Fawley near Southampton, Hants.

However, the local inhabitants of these sites say that this scheme will not interfere with the landscape since the solar panels will be completely obscured by the trees as compared to the wind farms.
Solar panels for the 5 MegaWatt solar scheme that spanned 30 acres.

Fingers crossed its stays hot: Project Manager, Scott Hotgartner at Cadland Solar Farm, in Hampshire – the farm will produce enough electricity for 1,000 homes.

Cadland estate has been used for farming crops such as wheat, maize, potatoes in addition to livestock keeping.

Alexis McEvoy who doubles up as the local councillor and chairman of the New Forest District Council, officiated the launch by cutting the ribbon for the solar panel installation. He then guided the guests present for a tour around the farms and acknowledged his amazement of the project. Councilor McElvoy expressed his impression by saying that the solar farm was bigger than he had expected and added that when given a choice between the solar farm and a wind turbine, he would not think twice as he would choose the former since besides being silent they are less intrusive and discreet.

Mr. Aldres Drummond, owner of the Cadland Estate commissioned the project and also hosted the delegation that was involved with the project.

Mr. Drummond expressed his excitement and gratitude to the team by saying that the solar project was a universal and beneficial scheme that would help meet the power needs of many homes.

He went on to add that his farm had fully embraced the adoption of solar power and other environmental friendly sources of energy and that the ground breaking had set the ball rolling for future alternative energy exploits.

The CEO of national energy-efficiency solutions company Anesco, Adrian Pike co-hosted the ground-breaking ceremony with Drummond

Experiencing the future! A host of energy industry stakeholders gathered to launch the project, which is made of 1,800 solar PV panels mounted on 5.6 miles of frames.

Mr. Pike said that being the fifth company that Aldred approached with a request of the project, he was honored to see the launch since they had to push for things to take place and realize the project. He also added that the project was just what was planned for.

Pike also acknowledged the fact that this project was made in a simple and efficient way in contrast to others, which are made complex by some companies involved. He concluded that when they turned up at the farm to see the complete thing for the first time the feeling was like a dream come true.

Councillor, McEvoy also noted that the project could be an eyesore to the landscape but after the completion, the inhabitants proved wrong since it is completely covered by trees.

He further concluded by lauding the efforts of Aldred Drummond since the farms are experiencing some challenges and said that it was going to be successful.

Source: Daily Mail

© Jimmy Eriksson for Renewable Power News, 2012. | Permalink | No comment

Add to

Search blogs linking this post with Technorati

Want more on these topics ? Browse the archive of posts filed under Alternative Power Sources, Photovoltaics, Renewable Power, Solar Power.

]]> 0