This chapter deals with the risk assessment for hydrogen installations. Two methods are presented. The first one aims to describe the risk in qualitative terms. Probabilities of failures and severities of the failure consequences are described using relative scales. The latter method is more complex and tends to determine the risk for the area with hydrogen structures. Risk evaluated for a specific location is determined by all risk-generating structures according to hazardous scenarios. Once each hazard is accounted for, the total risk is the combination of risk from different structures depending on the distance from that structure. This approach allows to determine the most hazardous area and then rearrange the layout of a hydrogen installation in order to decrease the resulting risk.