Multi-Time Scale Energy Management for Efficient Residential Energy Use with Electric Water Heaters

This paper proposes a residential energy management system that integrates multi-timescale optimization with electric water heater control. The proposed approach coordinates energy resources to minimize operational costs and maximize the use of renewable energy. Simulation experiments compared our proposal with an existing optimization methods. The results showed that our integrated optimization reduced purchased electricity by 2.1% and energy waste by 20%. It also maintains a more stable water heater temperature and volume. The findings offer insights into effective strategies for sustainable and home energy management.