Solar cell factory of Shell Solar in Gelsenkirchen, Germany.

Solar technology systems are high-tech products, and in both Solar Heating and Photovoltaics the respective components are constantly being improved and further developed. The Efficiency of modern solar collectors could be substantially improved by the implementation of ‘intelligent’ regulators and improved storage systems. A modern Solar Heating System delivers up to 90 % of all needed hot water during summer months, and about 50 % during the winter. Numerous and usually mid-sized companies sell such solar heating systems and install them on-site.

First generation photovoltaic modules based on crystal silicon Solar Cells demonstrate efficiencies from 13 to 16 % and are still in use today. The mass-production of solar cells will further improve their cost-effectiveness and thereby markedly reduce the price of solar power.

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