FLEXiT: A platform for estimating residential energy flexibility for aggregated & disaggregated demand-side management

The large-scale integration of distributed renewable energy sources and electrified end uses increases the need for accurate, scalable assessment of residential demand-side flexibility. This paper presents FLEXiT, a web platform that quantifies and forecasts flexibility at aggregated (building) and disaggregated (appliance) levels. FLEXiT couples bidirectional long short-term memory models for 1–7 day demand/production forecasts with denoising autoencoders for high-resolution appliance disaggregation. A dynamic 30-day weekday baseline supports hourly upward and downward energy flexibility indicators, and a time-interval classification highlights windows for demand-response activation. Pilot deployments show FLEXiT can ingest heterogeneous datasets, visualize flexibility envelopes, and inform load shifting for aggregators and prosumers. Unifying aggregated and disaggregated forecasting in one workflow enables portfolio-scale flexibility management with appliance-level interpretability.