Monitor energy use with alerts - ahead of the summer heat Accessibility StatementSkip NavigationST. PETERSBURG, Fla., March 20, 2026 /PRNewswire/ -- As temperatures begin rising across the state, Duke Energy Florida encourages customers to explore its Usage Alerts program, a tool designed to help monitor energy use and better anticipate monthly bills before it arrives.How Usage Alerts work: Customers with a smart meter and an email address on file are automatically enrolled to receive alerts that provide in ...