A data driven framework for forecasting post-retrofit HVAC and lighting energy consumption

Rahubadda Vithanage Ashen Dilruksha Rahubadda, Isanka Harshani Wijesundara, Supun Vidarshana Pieris, Udayangani Kulatunga, Department of Building Economics, University of Moratuwa, Sri Lanka, Department of Facilities Management, University of Moratuwa, Sri Lanka, Faculty of Computing, Sri Lanka Institute of Information Technology, Sri Lanka

Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy

Published online on June 23, 2026

Abstract

Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, Ahead of Print.
Buildings account for a substantial share of global energy consumption, yet significant uncertainty persists in predicting energy savings following retrofit interventions, contributing to the widely reported energy performance gap. Existing prediction ...