For any future sustainable energy system, it is crucial to know the performance of photovoltaic (solar cell) systems at local, regional and global levels. Researchers have investigated and mapped the capacities of photovoltaic generation in the European countries in four different configurations: Rooftop, optimum tilt, tracking and delta configuration, and made the data openly available. The different configurations have a strong influence on the hourly difference between electricity demand and PV generation.
