Full details of the microgrid from which this dataset derives may be found in the paper "SIEMS: A Secure Intelligent Energy Management System for Industrial IoT applications". In summary, the microgrid includes a PV system consisting of 18 Suntech STP175S-24/Ac modules which have been individually wired to reconfigure the PV field from the laboratory. The BESS consists of two Hewlett–Packard Power Trust II A1357 A battery packs, each with 12 units of 12 V, 8 Ah batteries. A supervisory control and data acquisition (SCADA) unit detects and diagnoses faults, and mitigates their effects through structural redundancies. The server is an Ammonit Meteo-40 data logger with 12-bit ADC and 22 channels, and an HTTPS Web configuration interface, ethernet output through RS485, data encryption, and compatibility with SCADA systems. The experiment was performed on a Windows 10 64-bit OS server with Python 3.6.4, an eight-core Intel Core i7 4 GHz CPU and 16 GB RAM.