How many fast charging stations do we need along the German highway network?

The number of fast charging stations along highways and their concrete allocation has a strong impact on the reliability and profitability of these systems. We provide a comparison of two applied approaches - one coverage oriented approach and an optimization based method - which can be easily transferred to other regions due to comparably low data requirement. Our results identify assumptions, which have strong impacts on the allocation problem and highlight which approach is advantageous in which environment.