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    "We have to increase our efforts!"

    The first ENERGIEWENDEBAUEN conference took place in Berlin from 30 - 31 January, 2017. Some 350 participants from research, academia, architecture and planning offices, politics, energy suppliers, cities and municipalities as well as the real estate industry discussed how the energy supply of buildings and districts could be made future-proof. The aim of the German federal government is to create a climate-neutral building stock by 2050. This will not be easy to achieve.  more...
     

    Cheaper production of solar cells

    There is intense competition in the market for photovoltaic systems. With constantly new innovations, the manufacturers are reducing their production costs and are increasing the efficiency of the cells and modules. For this purpose they are improving the production processes along the chain from silicon to the module. Companies and research facilities are working together to produce high-quality silicon crystals and wafers that save as much material as possible. They are also improving the material quality using an innovative solidification process for quasi-monocrystalline silicon. And with a new separation process they are producing more wafers from the same amount of silicon.  more...
     
    News 26.10.2016

    Learning and working in an energy-plus school

    Uhland School in Stuttgart, which dates back to the 1950s, no longer accorded with today's structural and energetic standards. The renovation work is now almost complete and the City of Stuttgart is getting its first energy-plus school. A photovoltaic system on the roof and façade of the building covers the electricity requirement.  more...
     

    Record: solar cell reaches efficiency of 22 per cent

    Recently, photovoltaic researchers presented the interim results of their project HELENE. The researchers achieved a new efficiency record of 22 per cent for industrial monocrystalline PERC solar cells (Passivated Emitter and Rear Cell). In doing so, they surpassed their previous record of 21.7 per cent, set in July 2015. The newly developed solar module technology is soon to be transferred into industrial production. The target is to generate photovoltaic power at lower costs through higher efficiencies and lower production costs.  more...
     

    Heating buildings via their exterior walls

    Surface heating systems facilitate the integration of renewable energy sources and reduce energy costs. However, since the retrofitting of underfloor heating is very expensive, thermally activated walls provide an option in existing buildings. For the first time scientists at Saarland University are testing the use of capillary tube mats in exterior wall heating.  more...
     
    Themeninfo II/2015

    Net Zero Energy and Net Energy Plus Buildings

    Buildings generally have the potential and infrastructure to generate the energy required by them on site. This provides the principle behind net zero-energy or net energy-plus buildings, whose numbers are steadily increasing around the world and especially in Germany. They have names like “energy-plus house”, “zero emissions house”, “efficiency house plus”, “activated-plus house” or “solar active house” and, internationally, “net zero-energy building”, “carbon neutral home”, “EQuilibrium™ House” and “Bâtiment à énergie positive”.  more...
     

    World record for both sides-contacted silicon solar cells

    With a new process for backside contacting, researchers at the Fraunhofer Institute for Solar Energy Systems ISE have set a new record for both sides-contacted silicon solar cells. The scientists achieved an efficiency of 25.1 per cent with an ultra-thin, tunnel oxide back contact. This is applied over the entire surface and does not require complicated processing steps for texturing the cell’s rear side.  more...
     
    Projektinfo 08/2015

    Processing solar cells with lasers

    Laser technology enables solar cells to be produced with greater efficiency. It replaces or eliminates costly processing steps that were previously required. Researchers have developed a method for laser contacting the rear side of solar cells that can be integrated into existing production lines for screen printing solar cells. The new technique enables the cells to be produced at a lower cost, reduces the energy and materials deployed, and eliminates previously required environmentally harmful chemicals.  more...
     
    Projektinfo 06/2015

    Stable grid with 100 per cent green electricity

    In a power grid, the energy provided must always be equal to the power demanded. Only then can frequency and voltage remain stable. Ensuring this is the task of grid operators. But when volatile — meaning not arbitrarily adjustable — energy sources are the main sources of electrical energy, grid operators face a challenge.  more...
     

    Solar houses scientifically evaluated

    With more than 1,700 buildings realised, solar active houses are no longer a marginal phenomenon. However, what has been lacking until now is a scientific evaluation of this heat supply concept. For this reason, researchers have measured nine solar houses over several heating seasons. Project manager Gerhard Stryi-Hipp has now presented the interim results at the OTTI Symposium on “Thermal Solar Energy”.  more...
     

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Events

24.04.2017 - 28.04.2017
Hannover

Energy 2017
03.05.2017 - 05.05.2017
Berlin

Berliner Energietage 2017
11.05.2017 - 12.05.2017
St. Gallen

Energie-Tage St.Gallen 2017

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