Abstract
Abstract and Conclusion The contribution points out modelling results from a techno-economic analysis of battery supported PV systems. Especially the ratio of the installed PV peak power to the useable capacity of the battery has a big impact on the rate of self-consumption, autarky and economic efficiency. Further on the impact of different household load profiles is analysed with focus on cost optimised system designs. The calculations are model-based and take into consideration the consumer load profile, technical and economical PV and battery system parameters as well as the framework of regulation. Results include the cost optimal system configuration, the operator's share of self-consumption and degree of autarky, grid feed-in and supply and various battery system parameters. One key finding is the importance to use realistic load profiles because otherwise the modelling results can be too optimistic for self-consumption and total costs. That is especially the case for aggregated profiles that do not represent a real consumer.
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