Renewable energy based on the principle of entropy

In nature, the diffusion of river water into salty seawater leads to a slight rise in temperature, and this energy could be captured to generate electricity. The conventional means of capture has been through osmotic power. Fresh water and salt water are separated by a membrane, and the salt water draws fresh water through the membrane, causing an increase in pressure. The pressure can then be used in a variety of ways, for example to turn a turbine. The Norway-based company Statkraft is testing one such osmotic power facility.
A team of researchers from Stanford University  approached the problem from a different angle and came up with a more compact system. As reported by Andy Extance at the Royal Society of Chemists, the Stanford system uses a battery to draw energy through a crystal lattice made of manganese dioxide nanorods, which pack a large surface area into a small space.

Source: www.cleantechnica.com

SolarCity sees U.S. panel prices tumbling in 2011

Solar panel prices in the United States are likely to drop by 20 cents per watt this year, according to the head of SolarCity, one of the nation’s largest photovoltaic solar service companies.
That drop would put the price of the panels that convert sunlight into electricity at about $1.40 per watt on average, or about 12.5 percent below prices quoted at the beginning of 2011.
Chief Executive Officer Lyndon Rive said the decline will help privately held SolarCity, which buys the panels from manufacturers and installs them for homes and businesses, to reach its cost-cutting target of 5 to 8 percent this year.
Prices for solar panels have dropped by about 75 percent in the past decade, and make up less than half the total cost of installing a rooftop system.
Most major solar manufacturers are increasing their output capacity of solar panels this year in a bid to grow their market share, even as key markets in Europe trim spending on the subsidies that are crucial to the fast-growing industry.
That could lead to a glut of solar panels on the market, squeezing margins at companies such as Trina Solar, First Solar Inc and SolarWorld AG.
However, market experts say those price declines are necessary to help the renewable power source compete with other sources of energy such as natural gas and coal, as well as reduce its dependence on government supports.

Source:  www.reuters.com

Mid-sized solar projects will be ditched if incentive cuts go through UK legislation

The chilling effect of the coalition’s proposed cuts to feed-in tariff incentives on planned solar projects with 50kW capacity was hammered home last week with the release of new data suggesting that virtually no mid-sized installations will go ahead if the incentives are slashed as planned.
Officials from the Department of Energy and Climate Change (DECC) last week hosted a workshop alongside the Micropower Council and the British Photovoltaic Association where they were presented with detailed evidence on how the proposed feed-in tariff cuts of between 40 and 70 per cent are expected to result in a freeze on all projects with over 50kW capacity, including community-owned and public sector projects.
“We’ve all had our rant about the cuts, now we need to help ministers with the evidence they need to make decisions,” Dave Sowden, chief executive of the Micropower Council, told BusinessGreen. “It is still a bun-fight, but it is turning into an evidence-based bun-fight.”
Officials saw presentations from three solar developers – building giant Kingspan, solar specialist Suntech and insulation and solar technology installer Mark Group – all of which demonstrated that the scale of the feed-in tariff cuts proposed in the government’s ongoing review will make the full range of 50kw plus projects unviable.
Most notably, Kingspan used three real life projects with capacities of 100kW, 250kW and 500kW to undertake a detailed analysis of the rates of return available to firms at different locations and under the current and proposed tariff regimes.
The analysis found that, with the current tariffs, firms deploying the projects could expect to receive rates of return before tax ranging from 7.1 per cent for a 100kW installation in Edinburgh to 11 per cent for a 500kW array in Plymouth.
In contrast, once the tariff proposed in the government’s consultation is applied, none of the projects attains the five per cent rate of return DECC has said in its impact assessment that it wants to achieve. The best rate of return is 4.7 per cent for a 100kW array in Plymouth, while all other projects would deliver returns of between 3.8 and -1.2 per cent.
Significantly, Kingspan’s analysis is based on real life projects and the company has offered to make all of its calculations, invoices and contracts available to DECC officials.
A DECC spokeswoman said that the workshop was part of the government’s efforts to support its ongoing consultation exercise, adding that the department was in “listening mode” and committed to ensuring that “everyone gets the chance to put their view across”.
Source: businessGreen

Geothermal Leaders to Gather in the Nation’s Capital for GEA Geothermal Energy Technology and International Development Forum

As the geothermal industry is poised for record setting expansion, leaders will gather in Washington DC on Wednesday, May 4 for the Geothermal Energy Association (GEA) 2011 Geothermal Energy Technology and International Development Forum which will be held at The Ronald Reagan Building and International Trade Center.
“Our industry is developing rapidly here in the United States, but the growth of geothermal power abroad has been fantastic as well,” said Karl Gawell, GEA Executive Director. “Our program is going to allow us to see how and where these many projects are coming along, while also giving an update on the many new technologies that are coming into the geothermal market.”
The Forum was developed in conjunction with the U.S. Department of Energy and the U.S. Department of Commerce. Over two-hundred industry leaders, foreign diplomats, financiers and government officials are expected to participate.
“Having the Departments of Commerce and Energy, as well as leaders from such a broad spectrum of geothermal supporters, as a part of this event will provide a great insight into where the geothermal industry currently stands and where it will be going over the next few years,” Gawell said.
The program showcases geothermal projects, trends, and governmental policies in the U.S. and around the world. Topics covered will include the geothermal market today, projects under development in the U.S. and internationally, outlook for the future of the geothermal market, jobs and money, new technologies, and federal agency support at home and abroad. The Forum will also feature an expo area.
Source: www.renewableenergyworld.com

Japan’s Kyocera to build second solar panel plant in Čzech Republic

Kadan, March 31 (CTK) – Japanese company Kyocera has launched the construction of its second solar panel plant in the industrial zone in Kadan in the Usti nad Labem region, northern Bohemia, Stepanka Filipova of the government agency CzechInvest told CTK Thursday.
Kyocera is going to invest Kc700m in the new plant.
At present it employs around 600 people in the region. In the autumn it is going to hire another 400 employees.
Usti nad Labem is a region with the highest employment in the country. In February it registered 60,612 jobless people.
According to the Kyocera management, the Kadan enterprise is its base for the European market.
The new plant is to have a capacity of 360 MW. Kyocera’s total solar panel production in both Kadan plants should reach 560 MW annually.
The Kadan company supplies solar panels to the entire Europe. Besides the Czech Republic, Kyocera has plants in Japan, China, Mexico and the USA.

Source: http://praguemonitor.com/2011/04/01/japans-kyocera-build-another-solar-panel-plant-%C4%8Dr

DIN-Y: Solar-powered mobile conference unit

DIN-Y is designed as a mobile, private, tap-proof conference mobile. It is suited for trade exhibitions as well as for events at disused industrial plants or in the countryside.
An operating company provides for transport as well as catering. Once the last conference participant has taken a seat in DIN-Y, the vehicle is raised to ensure a better view and enhanced privacy.
DIN-Y has power cells and solar cells for an operating time of 6 hours. For intensive operation, however, it must be connected to the electricity network.
DIN-Y cannot be bugged or tapped, and provides absolute protection from external noise.
Source: www.ecofriend.com/entry/din-y-solar-powered-mobile-conference-unit-for-the-uber-secret-conference/

New advance in biofuel technology

U.S. Energy Secretary Steven Chu congratulated a team of researchers at the Department’s BioEnergy Science Center who have achieved yet another advance in the drive toward next generation biofuels: using bacteria to convert plant matter directly into isobutanol, which can be burned in regular car engines with a heat value higher than ethanol and similar to gasoline. This research is part of a broad portfolio of work the Department is doing to reduce America’s dependence on foreign oil and create new economic opportunities for rural America.
BACKGROUND ON THE SCIENTIFIC ADVANCE ANNOUNCED TODAY
The work was conducted by researchers at the Department of Energy’s BioEnergy Science Center (BESC), led by Oak Ridge National Laboratory. Using consolidated bioprocessing, a research team led by James Liao of the University of California at Los Angeles for the first time produced isobutanol directly from cellulose. The team’s work, published online in Applied and Environmental Microbiology, represents across-the-board savings in processing costs and time, plus isobutanol is a higher grade of alcohol than ethanol.
“Unlike ethanol, isobutanol can be blended at any ratio with gasoline and should eliminate the need for dedicated infrastructure in tanks or vehicles,” said Liao, chancellor’s professor and vice chair of Chemical and Biomolecular Engineering at the UCLA Henry Samueli School of Engineering and Applied Science and a partner in BESC. “Plus, it may be possible to use isobutanol directly in current engines without modification.”
Source: http://energyportal.eu/latest-green-energy-news/9681-energy-department-announces-new-advance-in-biofuel-technology.html

Sam Wilkinson from IMS Research, about the future of PV market

Sam Wilkinson is one of the analysts in the PV Research Group at IMS Research. IMS Research is a leading provider of market intelligence to the global electronics industry and has been providing research and statistics on the industry for over 20 years.

What are your expectations for the global PV market in 2011 to 2012 (in terms of new GWs)?
IMS Research estimates that global installations will increase by around 20% in 2011, to between 20-22 GW; however, this is very dependent on how the market reacts to the changes in France and Italy. It’s possible we see a big pull-forward in demand again, but also possible that demand stalls and prices come down rapidly. Inventive reductions during, and at the end of 2011 mean that installations are likely to be roughly flat in 2012.
What do you expect to be the leading PV markets in the coming years?
We forecast that the largest PV markets (in terms of installations) in the next four to five years will be USA, China and Germany. Generally we see the global market diversifying and becoming less depending on just one or two markets – which of course will help stabilise demand.
What are your forecasts for the German and Italian PV market? And what other European PV markets will play a dominant role till 2015?
Following what has been an incredible two years for the German market, with installations estimated to have reached around 7.5 GW in 2010, we are seeing the incentive reductions start to take effect, and predict that installations will begin to decline in 2011, and again in 2012. That said, we don’t see Germany disappearing off the map or crashing altogether and believe that it will continue to install significant amounts of PV over the coming years.
It is currently very difficult to make a solid forecast for installations in Italy, as new information regarding its feed-in tariff is being released all the time. Based on the shipment information that we have collected (from inverter and module suppliers), we believe that genuine completed installations in 2010 were between 3-3.5 GW. We predict that there will be a surge in installations until the end of May when the current feed-in tariffs will finish. Currently, the rates that will be offered after this date are not available and there is still a chance that annual installations will be capped. Until this information is confirmed, it is very difficult to make a forecast. Although, it is certain that the new incentives policy will be designed to reduce the installations.
The Chinese PV industry is growing tremendously. Not only are the existing giants expanding their capacity, new entrants with huge ambitions are still entering the market. How does this match with the global market growth?
Chinese suppliers are carrying out extremely aggressive expansion plans. Chinese module suppliers added capacity very quickly throughout 2010 and capacity in China at the end of the year was over 80% higher than it was at the end of 2009. This growth was roughly in line with total industry demand. However, 2011 looks a little different; aggressive capacity expansions are continuing and Chinese suppliers are forecast to add a similar amount in 2011, but in contrast to 2010, installations are not predicted to grow at the same rate.
It is also significant that a number of other large Asian electronics suppliers are entering the market. Companies like LG, Samsung and Taiwan Semiconductor are able and willing to spend large amounts of capital and plan to quickly add capacity over the next few years.
What will the solar industry look like in five years’ time? Isn’t the solar industry likely to follow the wind-energy industry in the near future, with more than 90% of the market shared among only ten major manufacturers?
With incentive levels in the largest markets being quickly reduced over the last year or so, and further reductions likely, there will certainly be increased pressure on PV module prices. The leading, and surviving, companies will therefore be those that are able to reduce their costs in order to offer attractive prices whilst still maintaining a healthy margin. It is likely than only a small number of the hundreds of suppliers active in the market today will be able to achieve this.
Where in the supply chain (silicon to module) do you see the highest potential for further cost reductions?
As I previously mentioned, cost reduction is key to companies in a market that is ultimately aiming to reduce prices to the point where it no longer relies on subsidies and incentives, and can compete with conventional energy sources.
On the crystalline side, a clear strategy of some of the larger suppliers is the move to vertical integration. It is not difficult to see that the cost structure of a fully integrated module supplier (manufacturing polysilicon, wafers, cells and modules in house) has the potential to be significantly lower than a non-integrated one. A non-integrated module supplier’s cost structure could include the margin of a cell supplier, a wafer supplier and a polysilicon supplier, as well as the extra transportation costs etc. involved with the purchase of each item.
What module price development do you expect this and next year? Will the ASP for c-Si modules hit €1/Wp in 2012?

Following some increases in price during the second half of 2010, due to the high demand and short supply of modules, IMS Research predicts that prices will begin to fall again throughout 2011 and 2012. We predict that some crystalline modules will reach the €1/W milestone during 2012. Some thin film modules will reach this price this year though.
Europe seems to focus more on residential PV applications with their FiT support mechanisms. In the USA on the other hand, utility scale projects seem to drive the market. What is your view on the market segments that will drive the demand in the coming years?
IMS Research predicts that utility-scale PV systems will represent an increasing proportion of installations over the coming years, for a number of reasons:
Firstly, some of the largest markets in a few years time will be ones that favour large utility-scale projects, such as China and USA.
Secondly, the high volume nature of large utility-scale plants once again leads to lower prices and costs, on a per watt or per kWh basis at least.
In your opinion, where will the solar industry and markets be in 2015?
We predict that the largest end markets (geographically) will be USA, Germany and China in 2015. However, as I mentioned earlier we see full vertical integration becoming more and more common in the market, and we are likely to see a number of cell, module and wafer suppliers becoming their own ‘end customer’ and increasingly being involved in developing systems themselves.

Source: http://www.solarplaza.com/article/ims-research-usa-and-china-likely-to-become-the-w

Scientific breakthrough that will increase the conversion efficiency of solar photons into electricity

Researchers from the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL) and the University of Colorado, Boulder (UCB), have reported the first designed molecular system that produces two triplet states from an excited singlet state of a molecule, with essentially perfect efficiency. The breakthrough could lead to a 35 percent increase in light-harvesting yield in cells for photovoltaics and solar fuels. The experiments, using a process called singlet fission, demonstrated a 200 percent quantum yield for the creation of two triplets of the molecule 1,3-diphenylisobenzofuran (DPIBF) at low temperatures. In singlet fission, a light-absorbing molecular chromophore shares its energy with a nearby non-excited neighreackthroghboring molecule to yield a triplet excited state of each. If the two triplets behave independently, two electron-hole pairs can be generated for each photon absorbed in a solar cell. This process could subsequently increase by one third the conversion efficiency of solar photons into electricity or solar fuels.
The researchers identified DPIBF as a promising candidate while searching for molecular chromophores that have the required ratio of singlet and triplet energy states.
Earlier, NREL and Los Alamos National Laboaratory had demonstrated an analgous two-electrons-from-one photon bonus using semiconductor quantum dots in a process NREL termed Multiple Exciton Generation. The latest advance is the first to demonstrate the electron multiplication phenomenon via the singlet-fission process in molecules.
Until this most recent advance, singlet fission had been known as a somewhat obscure phenomenon occurring at low efficiency in a small number of molecular systems. In 2004, NREL and UCB revisited singlet fission as a potential way to maximize solar photon conversion efficiency. In 2006, NREL’s Arthur J. Nozik and Mark C. Hanna calculated the gains in thermodynamic efficiencies that were possible with solar cells based on singlet fission. These activities led to a much more extensive search for the best candidate molecules in a collaboration between NREL and the research group at the UCB led by Josef Mic

Source: http://energyportal.eu/latest-solar-energy-news/9640-scientists-generate-two-energetic-electronic-states-from-one-photon.html

Thin film solar technology promises charging phones without need of wires

Electronics users may soon never have to plug their cellphone or e-book reader into a wall again thanks to the latest innovations in thin film solar technology. French company Wysips is planning to launch a transparent solar film that will fit over a device’s screen, charging it without the need for wires.
The company, which has won first place in CTIA’s 2011 Emerging Technology competition, says that the material will be available in flexible or rigid formats, with thicknesses of between 0.1mm and 0.5mm.
The film has an efficiency of 10 per cent, but can scales easily in size, so that it can be used for relatively large areas, the company says.
It also claims that it can be built into screens, fabrics, plastics, and other materials, without affecting their appearance, making it ideal for mobile electronic devices.
The material could be particularly useful for the growing e-book reader category, most of which rely on electronic paper that carries an image with power. These books, which draw power only to change the image on the page, are likely candidates for the material, because their power draw is already so low.
However, Wysips is setting its sights on a wide range of potential markets, envisaging tents with built-in light sources, or garden furniture that can similarly power electrical devices.
Source: www.businessgreen.com/bg/news/2038960/french-solar-innovation-promises-wireless-phone-charging