Cost-effective, CO2-neutral, integrated - Meyer Burger hybrid collectors in pioneering "Suurstoffi" development project in Rotkreuz, Switzerland

Meyer Burger hybrid collector technology reduces the use of non-renewable energy sources in combination with other system components in the pioneering "Suurstoffi" project located near the railway station in Rotkreuz, Switzerland. The local energy is harvested on the roof, stored in the ground and raised to the required temperatures at the desired time with the aid of heat pumps. This provides the entire "Suurstoffi" development, which is being built by the Zug Estates Group, with an emission-free supply of electricity and heat.

By 2018 an integrated, traffic-free district in which living, working and leisure activities are combined will have been built on the "Suurstoffi" site in Rotkreuz-Risch in central Switzerland. When complete, the "Suurstoffi" development will provide space for 1,500 residents and around 2,500 jobs. The initial building stage was completed in spring 2013. The residential concept offers an impressive diversity of well-thought-out floor plans and high quality materials. In the first phase with some 230 apartments, there are no less than 160 different floor plans.

Second building phase

In a second building phase, with an investment volume of around 100 million Swiss francs, Zug Estates is erecting an office building and a residential development with nine buildings. The entire "Suurstoffi" development is based on a CO2-free energy concept and as part this concept, all building roofs in the second phase are fitted with hybrid collectors from Meyer Burger. The Swiss-made hybrid collectors from Thun are capable of increasing the development's degree of self-sufficiency from 67 % to 80 %. The degree of self-sufficiency will be further increased in the planned third building stage.

Aesthetic integration

The high degree of energy self-sufficiency can only be achieved by making the maximum possible use of the incident sunlight. With this in mind, the maximum number of hybrid collectors was fitted. The architects and energy specialists developed a solution in which the hybrid collectors were arranged horizontally over the entire roof area of the buildings in the second construction phase. The resulting southerly inclination increased the energy yield of each collector while the spacing required between the horizontal module rows reduced the number of collectors installed by at least 30%. This roof layout enabled the highest possible energy yield per square meter of roof space as well as the most aesthetically pleasing appearance. The level-equalizing solar module fastening system was conceived specifically for the "Suurstoffi" development by Meyer Burger in collaboration with the local specialist, Bosshard AG. The design enables the modules to be fitted flush with the edge of the roof. The hybrid systems on all of the roofs have safety guards parallel with the roof edge that cast no shadows on the collectors.

Smart energy concept

Zug Estates has set itself the goal of ensuring that its properties can be utilized without additional energy input from external sources and to emit no CO2 as a result of their use (Vision Zero-Zero). These ambitious goals are already being achieved on the "Suurstoffi" site.

The ingenious energy concept works through the use of geothermal and solar energy. In winter, energy is extracted from the geothermal probe array made up of 220 probes; in summer, the excess heat from the roof or from the office and residential spaces is gathered and stored. A system of pipes linking all the buildings (energy network) enables heat to be exchanged between the buildings. For example, waste heat from an office building can be used to produce hot water in the residential buildings. Photovoltaic modules and hybrid collectors generate the energy required to operate the plant, in particular the heat pumps, on site. The balancing of the current between the imported and produced electricity takes place via the public grid. The efficiency of the system is achieved thanks to the low operating costs and the freely available cooling. Needless to say, the efficient energy concept ensures a pleasant indoor climate all year round.

For further information, please contact:

Sandro Spichiger
Marketing Communications

Tel: +41 (0) 33 221 23 95

sandro.spichiger@meyerburger.com

Ingrid Carstensen

Corporate Communications

Tel +41 (0)33 221 28 34

ingrid.carstensen@meyerburger.com

About Meyer Burger Technology Ltd

www.meyerburger.com

Meyer Burger is a leading global technology Group specialising on innovative systems and processes based on semiconductor technologies. The Group's focus is on photovoltaics (solar industry) while its competencies and technologies also cover important areas of the semiconductor and the optoelectronic industries as well as other selected high-end markets based on semiconductor materials. The Group currently employs more than 1,900 people across three continents. Over the past ten years, Meyer Burger has risen to the forefront of the photovoltaic market and established itself as an international premium brand by offering superior precision products and innovative technologies.

The Group's offering in systems, production equipment and services along the photovoltaic value chain includes the manufacturing processes for wafers, solar cells, solar modules and solar systems. Meyer Burger provides substantial added value to its customers and clearly differentiates itself from its competitors by focusing on the entire value chain.

The Group's comprehensive product portfolio is complemented by a worldwide service network with spare parts, consumables, process know-how, customer support, after-sales services, training and other services. Meyer Burger Group is represented in Europe, Asia and North America in the respective key markets and has subsidiaries and own service centres in China, Germany, India, Japan, Korea, the Netherlands, Switzerland, Singapore, Taiwan and the USA. The Group is also working intensively to develop new markets such as South America, Africa and the Arab region. The registered shares of Meyer Burger Technology Ltd are listed on the SIX Swiss Exchange (Ticker: MBTN).

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