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Obviously, mankind urgently needs new sources for producing clean and renewable energy which do not produce green house gases. However, efficient exploitation of solar energy is still in its infancy. Technological activities to convert solar energy into electrical energy have been focussed mainly on solar cells based on inorganic semiconductors which are typically manufactured in a classical top-down approach. Its natural counterpart however, photosynthesis, is based on exactly the opposite strategy, i.e. bottom-up: Starting from individual molecules and combining them to supramolecular structures. Hence, the various natural light-harvesting systems in photosynthesis might serve as blueprints for the construction of novel solar cells based on organic matter. However, despite of many studies a clear predictive strategy for the design of man made supramolecular structures acting as efficient light-harvesting devices is still lacking to date. It's the aim of the conference Light Harvesting Processes LHP2015 to gather scientists from biology, chemistry, physics and engineering, who are working in the field of light-harvesting processes and related subjects. This conference provides a platform to get into contact with each other.