Battery electric vehicles (BEV) are an important part of the mobility shift towards achieving national and international climate targets, including complete decarbonisation of traffic. This paper approaches the topic from the point of view of public administration, where so far there have been few efforts to integrate electric vehicles into fleets and to act as an innovator. Therefore, according to Roger's diffusion theory, relevant factors influencing the Ministry of the Interior's willingness to innovate are examined. With the help of qualitative interviews with experts from various ministries, the private sector and a car company, it is determined which factors can be decisive for the use of electric vehicles in ministries and which factors prevent this. This examination shows that there is interest in electric vehicles within the Ministry of the Interior and that a study is being conducted on the requirements for usage as emergency vehicles, although the requirements for the electric vehicle product currently overlap all other factors. As a result, no strategic considerations are currently being made regarding the implementation of a fleet of electric vehicles. Finally, this work provides a deeper insight into the complex innovation processes in ministries.