Here you can find two supplementary materials to the paper “A holistic framework for developing expert systems to improve energy efficiency in manufacturing”: EnergyUseGermanyManufacturing.json (data set with a breakdown of energy use, CO2 factors and cost factors by energy carriers for the manufacturing industry in Germany in 2023), SampleMeasurementDataETAFactory.csv (data set with measurement data of the active power of five machines in the ETA Factory)