Home Industries Energy and Water Energy and Water Storm Estimated Restoration Time Cloud Service Oracle Energy and Water Storm Estimated Restoration Time 25.4 Guides Energy and Water Storm ERT Users Guide HTML PDF Oracle Energy and Water Storm ERT Administrator's Guide HTML PDF Administrator guide for the Oracle Energy and Water Storm Estimated Restoration Time (ERT) cloud service. Oracle Energy and Water Storm Estimated Restoration Time User Guide HTML Describes how to create accurate storm models and ERTs based on historical storm and outage data.