The story of how biggest Latvian energy company (Latvenergo) has gradually implemented Business Intelligence. It was developed iteratively, covering one analytical cube after another. Now BI has become a central system, because it ensures that information is available for every operational and strategic decision, which needs justification with numbers... All of the ERP operational reporting has been developed on top of the BI, because data is refreshed in real-time! Managers consume information via interactive dashboards, tailored accordingly with organization structure. Detailed analysis are available to business users via ad-hoc queries, that they can built themselves.