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ce blog donnera des informations techniques et générales sur le verre et les panneaux photovoltaîques solaire direct veut rentrer en bourse 6 mars 2015 la société française spécialisée dans l’énergie solaire prépare son entrée en bourse, avec une levée de capitaux de 175 millions d’euros. la société qui a dégagé un résultat positif sur son dernier exercice représente 486 mégawatts en exploitation ou en cours de construction. avec aussi un changement de stratégie avec l’objectif de devenir majoritaire dans les parc qu’ils va construire. la société est aussi un consommateur important de verre de part son activité de production de panneaux photovoltaïques en verre en afrique du sud. nous sommes bien loin des meules pour les machines de miroiterie. posté dans energie solaire | aucun commentaire » akuo, accord en indonésie avec pertamina 12 février 2015 nouveau contrat pour akuo. l’entreprise de la région parisienne a signé un contrat avec l’indonésien pertamina pour installer dans ce pays des unités de production d’électricité utilisant l’énergie solaire et d’autres énergie renouvelables. akuo a déjà installé dans cette région (ile de la réunion) des centrales photovoltaïques innovantes. akuo est une entreprise fortement exportatrice et a réalisé sur 2014 104 millions de chiffre d’affaires. posté dans energie solaire | aucun commentaire » aloe energy 11 février 2015 aloe energy rachète eco delta la société provençale a annoncé le rachat des parcs photo voltaïques d’eco delta. ces installations représente une production de 70 mw représentant la consommation d’énergie électrique de plus de 20 000 familles. aloe energy ne compte pas en rester là car il a de nombreux projets soit en portefeuille soit en phase d’étude autant dans le solaire que l’éolien. posté dans energie solaire | aucun commentaire » cutting costs in photovoltaics: glass innovations coming. 6 mai 2014 article intéressant pour le futur du photovoltaïque. cutting costs in photovoltaics: glass innovations coming. although the costs for solar power have decreased considerably lately, photovoltaics are still not able to compete with conventional energy sources. the “last kilometer” to competitiveness will therefore prove difficult for the market: cell and module production have already been rationalised substantially. companies now have to increasingly concentrate on innovations in raw materials and components. analysts agree: after two years of consolidation the global pv market is picking up again. us-based market research company npd solarbuzz expects global demand for pv to reach between 45 and 55 gigawatt for 2014 after 37 gigawatt last year. experts forecast strong incresing especially in asia and in north and south america. this means that alongside the actual markets in europe new areas will soon appear on the pv landscape. markets are driven by solar power feed-in-tariffs designed in line with germany’s renewable energies act. to the tune of 60 countries have introduced this type of subsidy now and, at the same time, pv systems are becoming more affordable by the day. according to the trade portal pvxchange, prices for an average turn-key system with crystalline modules from germany dropped by some 25% to around eur 1,500 per kilowatt. this price dumping can be attributed to the keen competition prevailing in the pv industry. in china, in particular, solar energy component factories have been virtually springing up like mushrooms over the past few years thanks to state subsidies. “in china this is encouraged by the state: chinese manufacturers wish to dominate this promising future market at any cost,” explains business consultant and china expert frank haugwitz. the over-supply of solar modules is forcing producers to offer drastic discounts. not competitive yet price battles are starting to affect the very substance of the european solar industry. according to current data provided by the german statistical office, over half the 10,200 jobs at german module producers have been lost since 2012. for the first time in almost four years employment has fallen below the 5,000 threshold. on the other hand, pv now boasts comparable power generation costs with conventional power plants thanks to this price landslide; in some very sunny regions solar power is even competitive already. in the south west of the usa large solar power plants can produce one kilowatt hour for as little as 0.08 cents – almost as inexpensively as gas and coal-fired power plants. to cut costs even further, however, the solar industry will need to make major efforts. “in cell and module production the savings to be expected will not be as dramatic as over the past two years,” says florian wessendorf, general manager of the association for photovoltaic components in the german engineering industry federation vdma, and explains that technical innovations have already been largely implemented here. but the industry has other cost-cutting options. one approach is the so-called balance-of-system costs. in pv these costs describe all the costs incurred for components and services required for installing fully operational solar systems at a site – excluding module costs. this includes costs for inverter, substructure, wiring or mains connection. at present, these items account for about one third of the total costs of a solar project. glass as cost-cutting tool there are still some efficiency gains to be “reaped” in the upstream stages of the value chain such as glass manufacturing. according to data by heiko hessenkämper, professor of glass and enamel technology at the technical university (tu) of freiberg, cover and carrier glass currently costs some eur 80 per kilowatt hour of module output. this means, glass accounts for at least 10% of the present module prices of eur 600 to eur 800 per kilowatt hour. hessenkämper believes that this proportion can be cut by two thirds to some eur 30 per kwh by relatively simple means. “there are materials that can be easily separated from the gaseous phase and deposited on the glass. these increase the toughness of glass while reducing reflections at the same time,” explains hessenkämper. this simple method of surface modification, which does not even require any process changes to glass manufacturing, means you can cut out the thermal pre-stressing that has been required for glass toughening until now. this hardening process gives glass sheets the characteristics of elastic yet resistant bodies that protect the sensitive solar cells against weather impact for many years. however, the process is both energy and cost-intensive: the sheets are first heated up to over 600°c and then quickly cooled off starting with the surface, thereby transferring them into a state of residual stress. according to hessenkämper, although gaseous phase separation is already fit for commercial use and currently being tested primarily by asian glass producers, the technical approach pursued by the friedrich-alexander university nürnberg-erlangen (fau) and its project partners is still in the research stage. scientists there are working on types of smart solar glass that adjust the sunlight to the spectral sensitivity of solar cells with the help of fluorescent materials. this way the power yield of the cells can be improved and power generation costs can be reduced. smart solar glass for years now scientists have been aware of a way to expand the spectral area of solar cells: using so-called “luminescence down-shifting” those parts of the sunlight that solar cells find it hard to absorb can be converted into wavelength spectrums where the cells work very efficiently. the fau project is specifically geared to converting high-energy, ultra-violet and blue light into low-energy, green and red light by means of an ultra-thin fluorescent layer. according to fau project manager miroslaw batentschuk, it is not necessary to change the established manufacturing technologies for solar glass overall – only parts of the
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