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In spite of their many disadvantages, batteries remain one of the key components in contemporary electronics. While changing their structure entirely is impossible due to the chemical and physical processes happening inside, scientists, startups, and major companies are searching for ways to reinvent them or adopt totally new approaches.
Whether rooftop solar panels are worth the cost is largely dependent in Switzerland on local compensation rates for solar power and on electricity prices in general – these are the findings of a study by researchers at ETH Zurich and the University of Bern. Many power grid operators pay too little, thereby limiting the expansion of solar power.
Solar power is becoming an increasingly important source of energy worldwide. At present, photovoltaic systems are predominantly being used in Germany. For sunny countries, solar tower power plants are a valuable addition. They store heat and can generate electricity at any time – even when the sun is not shining.
Concentrating solar thermal systems are still little known in Germany, although they are a highly efficient approach to producing heat from solar energy. In such a system, specialised mirrors arranged in different geometries are used to focus the Sun’s rays on a defined area, such as a circle or a line. This heats a heat transfer medium, which then flows through a heat exchanger.