Central Heat Pump Water Heater Load Flexibility
Developing Thermal Storage Controls for Central Water Heating Systems in Apartments
The agreement will be considered at the December 2020 CEC Energy Commission Business Meeting.
This project demonstrates a new-to-market Thermal Storage Control (TSC) technology developed by ZYD Energy to enable flexible load management through hot water storage volume controls. The TSC technology uses optimization algorithms to automatically determine heat-pump water heater operation schedules based on hourly/sub-hourly electricity price or emission factors, as well as demand response signals and real-time operation conditions, while ensuring reliable hot water supply. The technology will be demonstrated in three multifamily residential sites located in different climate zones.
This agreement advances a control technology that can reduce and shift the building's peak electric load, while improving system efficiency. Assuming 5 percent of existing multifamily buildings adopt the TSC technology in 10 years, the estimated annual electricity bill reduction for customers is $5.6 million with an estimated annual peak demand reduction of 18 MW and annual electricity use reduction of 15.6 GWh.