Define 'Dependability' in the context of reliability.

In the context of reliability, 'Dependability' refers to the ability of a system to consistently perform its required functions under specified conditions. This encompasses various attributes including reliability, availability, and maintainability, ensuring that the system can be counted upon to deliver its intended services without unexpected failures. It indicates not just the presence of equipment or systems, but their operational performance and trustworthiness in meeting operational demands.

The definition aligns with a robust understanding of reliability in the energy sector, emphasizing how critical it is for systems in this field to perform reliably, especially during peak conditions or when facing unexpected disruptions. A dependable system is essential in maintaining service quality and stability in the energy supply chain.