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Welcome to our Blog. Here we post about developments in the world of solar power and interesting stories that we come across.

The window on the latest innovations in Solar Cells

Prepare for the next big innovation for solar power buildings – energy harvesting windows.

Several companies around the world are presently working on the concept, with the US throwing its weight behind SolarWindow, which uses a ‘virtually invisible’ conductive wiring grid system within the glass. Developed by and supported by the United States Department of Energy’s National Renewable Energy Laboratory, the tech works, but is still not quite invisible enough it seems.

Here in the UK, Oxford PV, part of Oxford University has been working towards a similar solution since 2010, an invention that combines dye-based thin-film solar cells with glass substrates for its technology, resulting in tinted glass that is at also a solar generation system. Oxford PV is presently trying to bring the price of its technology down to around 21p per watt, with the avowed intention to have it on the market by the second half of 2013.

Cost is also the big issue at the minute and also that the molecule-based panels don’t generate quite as much power as a standard solar panel under normal light conditions: So, there’s still a lot of work to do.

For all the latest solar power deals, visit the Solar Direct Savings website or contact our customer service team on 0800 810 0181.

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The portable, wearable solar cells that could revolutionise energy generation

Solar roof panels? That’s so last season, at least according to tech futurist Miles Barr. He wants to take solar generation away from the building and into the realms of popular fashion. Miles wants to make curtains, mobile phone cases, and yes, even shirts that gather and use solar energy.

Miles, who has a chemical engineering Ph.D. from Massachusetts Institute of Technology, specialises in chemical vapour deposition, a process that is used put a thin, solid film around any object inside a sealed chamber.

The advance Miles has made is by adapting the technology to fix an electrically active solar cell coating onto ordinary materials. His first success, in 2010, was imprinting a solar cell onto a sheet of paper.

Once Miles’ team at MIT perfected the process to make solar cells, they attacked an office supply store, grabbing any and all test materials: “Saran Wrap, copy paper, tissue paper, almost anything you can imagine,” he says.

Miles believes his technique would work in mass production, because it uses easily available and prolific organic molecules. The downfall is that at present, his solar cells can only store and convert around 2 per cent energy into electric power, compared with the standard 10 – 20 per cent produced by photovoltaic panels, though he thinks he can eventually raise the efficiency to 10 per cent.

So watch this space, you never know SDS could be bringing a whole new range of solar products in the not too distant future.

For all the latest solar power deals, visit the Solar Direct Savings website or contact our customer service team on 0800 810 0181.

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Solar aviation begins to take off

In today’s tough economic climate, the aviation industry is faced with the dual challenge of developing aircraft that are cost effective without posing a threat to the environment.

PC Aero and a German-based solar power group believe they may be able to shed some light on the problem.

The two companies have combined forces to develop ElectraOne, a solar powered aircraft capable of zero emission flight.

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New solar array means independent power for New Mexico residents

They must really love sunshine in New Mexico… and even more so soon. Starting next  month, all businesses and residences in north central New Mexico will receive electricity provided by solar power on sunny days, making it the largest area of land, with the largest number of power consumers in New Mexico, to be supplied with electricity by renewable sources.

A new 1.5-megawatt solar array, occupying a 14-acre area, will add to power already being generated from a concentrated photovoltaic 1-megawatt array built near Questa, New Mexico.

The system is a single–axis tracking solar system, which consists of 5,280 solar panels, producing approximately 1.25 MW of AC power when at full capacity, with an expected annual output of more than 2.9 million kilowatt hours. The carbon offset from the installation will be roughly equivalent to planting 221 acres of new forest.

The new array, called the RCCLA Amalia Solar Array 1, is sited in the Sangre de Cristo Mountains and is the result of the combined efforts of landowners, utility companies and solar producers.

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A cool new idea for solar hybrid energy generation

A British company is reinventing and refining a US-originated ‘cogeneration’ hybrid  concept in an attempt to improve the efficiency of conventional PV panels and, at the same time, add water heating abilities to the system.

In the US, California’s Cogenra Solar is one of a few companies producing cogeneration systems already, but there are major differences in the way they work. Cogenra is a motorized system that tracks the sun’s movements, using curved solar panels to focus light and pipes containing the water to be heated running behind them.

A new solar hybrid product, called Virtu, has been presented to potential investors in the US as an answer to the issue of what happens when solar photovoltaic cells get too hot. Vexingly, as conventional flat panels are presented with too much heat at any one time, such as at midday, this can affect efficiency, opposed to at other times of the day. Whilst this is often a problem in hotter climates such as America, conventional solar pv panels are often at their most efficient in cooler climates such as the UK.

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A new frontier for solar energy?

The energy demands of our modern world call for sustainable energy solutions, experts say. For decades researchers have been assessing the feasibility of power beaming solar satellites.

In the past, complexity, projected costs and energy economics have meant the projects to develop solar energy satellites have remained grounded.

However, proposals for a new solar satellite known as SDS-ALPHA have been announced that could be the key to a major breakthrough in the solar industry.

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The future of solar panels burns brighter

Using solar PV panels can create huge saving for homeowners and businesses alike.

Boston Council in Lincolnshire recently installed solar panels on the roof of a leisure complex at a cost of around £105,000. The panels expected to recover this cost within nine years. Over the next 25 years it is expected they will generate a profit of at least £260,000.

Leader of Boston Council Peter Bradford commented: “The energy saving income generated may also be even higher than
that amount- closer to 80 or 90%. Our investment in solar PV represents a good deal, providing low carbon clean energy and also making the facility less vulnerable to future price increases.”

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Red, light and blue

An innovative new solar cell design from the University of Cambridge could hold the key to breaking the solar industry’s efficiency barrier.

The work was carried out by a team in the Department of Physics at the university, led by Professor Neil Greenman and Professor Sir Richard Friend.

The new design can harvest energy from the sun much more efficiently than conventional cells- dramatically increasing the amount of useful energy solar panels can create.

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Solar panels to go 3D?

No, you won’t need to wear special glasses to enjoy the benefits of solar power generation, but a team of researchers at the Massachusetts Institute of Technology have found that the
conventional way of arranging solar cells in flat panels angled to face the sun may not be the best way to organize them, and that cube, or even tower-shaped solar cells might be a better design, especially for locations far north of the equator, such as northern Alaska or Tierra del Fuego, where the sun never gets very far above the horizon for much of the year.

Researchers led by Jeffrey Grossman, associate professor of power engineering, tested a huge variety of configurations at different latitudes in a computer simulation, then built three of those designs, putting the panels on the roof of an MIT building.

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