Strategic capacity planning involves an investment decision that must match resource capabilities to a long term demand forecast. This work finds out explanations of the techniques of capacity planning and management techniques to end the power interruption in general and input for strategic decision-making purposes in particular in ethiopia. Secondly, it incorporates the views of some manufacturing industries. The research identifies the causes of power interruption with regard to planning functions actions, compared the corporation’s planning systems with the scientific approaches of demand planning (forecasting. The research explored the following areas: the corporation’s capacity planning and management techniques during the past four years, actions are taken to improve the distribution systems and substations, the level of the corporation’s integrity with external entities, the corporation’s use scientific capacity planning and management systems, the alternative ways of managing power interruption EEPCo used.