Power & Energy Solutions

The premier renewable energy publication

All eyes in the industry will shortly be on the 25th European Photovoltaic Solar Energy Conference and Exhibition taking place from 6-10 September at the Feria Valencia fairground in Spain. Here PES presents its exclusive preview of the event which could not have come at a more crucial time for the industry.This year's PV Industry Exhibition will spread over eight large exhibition halls at the Feria Valencia fairground, covering an exhibition area of 80,000 sq m.Following requests, the exhibition area has been further extended this year compared to 65,000 sq m in Hamburg last year, to accommodate more than 950 exhibitors from around the world. Manufacturers and suppliers of PV production equipment and materials will account for some 40 per cent while manufacturers of cells and modules will be occupying 37 per cent of the total exhibition space and represent the two largest PV industry sectors at this 25th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC).For some years now, EU PVSEC has combined a respected international scientific conference with a renowned PV Industry Exhibition and trade fair. During five days of conference and four days of trade fair, new products and technical innovations from all areas of the

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As head of one of the ‘greenest companies' in America, Pall's Keith Webb has a duty not only to his stakeholders, but also to the global community as a whole. It's a responsibility he ably administers, driven by a zeal for innovation and corporate success. Here, he tells PES about the company's rapid growth, its creative technological developments, and its focus on European operations.PES: Welcome back to PES magazine, can you tell us how your company has been performing within the wind market since we last spoke?KW: Pall Corporation's wind energy business has grown tremendously over the past few years. Sales, to this application, doubled last year. We have expanded our reach away from our traditional European base towards America and Asia. The key wind turbine application currently in our portfolio is the protection of the turbine gearbox lubrication system for bearings and gears. Pall filters are also used to protect the hydraulic systems inside the nacelle. PES: And how much of your total business is now dedicated to wind energy? Is this still an area in which you wish to see continued growth?KW: From one per cent five years ago, wind energy is fast approaching 10 per cent of

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A 176 year-old-operation, Rickmers-Linie is a member of the Hamburg-based Rickmers Group and provides a worldwide network of liner services for the transportation of breakbulk, heavylift and project cargoes such as transformers, generators, railway locomotives - and of course, wind turbines. PES once again caught up with the company's Director of Marketing and Sales, Gerhard Janssen.PES: Welcome back to PES magazine. For the benefit of readers who might not be familiar with your company, can you explain a little about your operation and how you serve the wind industry?Gerhard Janssen: Rickmers-Linie is a leading liner carrier specialised for the transportation of breakbulk, heavylift and project cargoes. We operate a Round-The-World Pearl String Service, which connects the industrial centres of the world on an eastbound rotation with fortnightly departures.Furthermore, we have a service from Europe to the Middle East and India, as well as the services in the Pacific, which are the westbound service from the US East Coast via the Panama Canal to Northern China, South Korea and Japan, as well as our brand new NCS Service linking Japan, South Korea and China with ports on the Northern Coast of South America, in the Caribbean and finally Philadelphia.PES: What's the

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The views on offshore wind projects are as divided as can be, so the slightly polemic title of this article is probably appropriate. There are some who argue that offshore wind is the way to go, and to go now. And there are others who argue that offshore wind is too expensive and too risky and that, anyway, there are sufficient onshore sites left that should be developed for wind energy first. As so often, both sides have valid points. This article will look at some of these.Current SituationOffshore wind has undergone an interesting development but one cannot say that it was a rapid development. After the first large and (truly far) offshore project at Horns Rev offshore wind project development appeared to be on good course. Germany and the UK identified huge potential for offshore projects in their waters and it appeared to be only a question of (little) time before the North Sea would be crawling with turbines. Alas, these high hopes were only partially met. The UK has, by now, almost 1GW offshore wind installed and another 2GW have been consented. Germany however, long thought to be the vanguard of offshore wind, like she was wind onshore,

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A progressive process that has nevertheless been utilised in other industries for several years, Print-on-Print involves the printing of one conductor grid directly on top of a previously printed and dried grid. PES asked acknowledged pioneers DEK for an in-depth explanation of this revolutionary procedure.A simple Internet search will reveal that the photovoltaics industry is working hard on higher aspect ratio frontside conductor grids as a route to increased solar cell efficiencies. This is because the silver energy-collecting conductors that are typically screen printed onto the frontside of a silicon-based solar cell actually block out sunlight, effectively stopping it from reaching the energy converting strata below. While it is important that these conductors are optimally distributed across the surface of the cell in order to mop up all the energy available, it is clear that the more surface area they cover, the more they will hinder cell functionality. Which is why the solar industry is putting such a lot of effort into reducing conductor widths. Currently in the region of 80-120μm, these are expected to drop to 50-60µm in the immediate future, reducing the shadow effect and improving cell performances considerably, while saving on materials costs.In doing so, however, cell

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Ever wondered what effect our efforts to limit global warming to two degrees will have on the European economy and labour market by 2050? A new study by the Fraunhofer Institute for Systems and Innovation Research (ISI) provides some illuminating answers.Klaus Jacob, Fraunhofer-GesellschaftAs demonstrated most recently by events in Copenhagen, international climate conferences are generally pretty tough affairs. But while politicians wrestle over reduction targets and percentage points, we tend to lose sight of the fact that a great deal of hard scientific research has gone into these figures. A veritable army of experts do the preliminary work for the negotiators, so that any potential agreements are not just words uttered in a vacuum.The Fraunhofer Institute for Systems and Innovation Research ISI in Karlsruhe recently took the lead in producing a particularly intricate report on global change on behalf of the European Commission. In the report, entitled "ADAM two-degree scenario for Europe - policies and impacts", ISI researchers worked together with experts from a number of other institutes and countries to gaze far into the future - to the year 2050 - and find answers to questions such as ‘What will Europe have to do in the interim to limit

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Thin-film is apparently coming under pressure despite the knowledge is that modules made from thin-film silicon can be manufactured more cost-effectively than thick crystalline ones. It seems that the technology is trailing far behind its efficiency and cost objectives, whereas crystalline innovations are developing at a greater pace. PES investigates.Sunfilm and Signet Solar have a lot in common, they have the "sun" in their names, were founded in 2006 and have succeeded in considerably reducing solar energy costs with their thin-film silicon modules. And, in spring this year, both companies experienced turbulent economic times.Everything began with such promise. In 2006, classic silicon modules were still very expensive due to the high silicon costs and newcomers were apparently faced with a walkover; they only had to replace the solid semiconductors with a cheaper absorber. On the face of it, the silicon thin-film appeared perfect - it needed a hundred times less silicon than crystalline modules and could be manufactured far more cost-effectively as a result.Amorphous silicon (a-Si) is applied at almost 200 degrees. For wafer-based cells on the other hand, ovens have to be fired to 1500 degrees for hours, which devours far more energy. Silicon thin-film attracted many newcomers

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