Infrastructures which are central to the functioning of the state and irreplaceable or difficult to replace are referred to as a critical infrastructure system. As threats and the intensity of these threats rise, elements of critical infrastructure system are increasingly exposed to disruptive events. In order to maintain the operability and continuity of these elements, protecting them is crucial. Protecting infrastructure elements which are highly interdependent and impact the functioning of dependent infrastructures is especially important. In this respect, the electricity infrastructure can be considered uniquely critical. For this reason, maintaining a high level of protection for elements of this type of infrastructure is necessary, especially through pre-emptive measures to prevent disruptive events. Following from this observation, the paper presents a proposed procedure for predictive indication of the failure of elements in electricity critical infrastructure.