Optimizing Heat Pump Load Flexibility for Cost, Comfort, and Carbon Emissions
Optimizing heat pump load flexibility for cost, comfort, and carbon emission reductions
This project kicked off in July 2020. The recipients has finalized subcontracts and developed their technical advisory committee. The team has faced personnel challanges during the initial years of the project due to COVID19. An amendment for a no-cost term extention is currently being processed by CEC to extend the end date to 6/30/2025.
This project develops and tests an advanced control system that saves energy, improves grid reliability, and reduces carbon emissions by optimizing heat pump operation based on building owner/occupant preferences, comfort and use patterns, electricity pricing, electricity grid needs, real-time carbon emission rates, and weather data. Load flexibility controls offer a way to mitigate the impact of electrification on low-income customers by empowering households to shift consumption to times of day with lower rates without compromising their comfort. The recipient will test controls for heat pump water heaters in multiple low-income households (across two climate zones). The developed controls for water heating will also be adapted to heat pumps that provide space conditioning and field test them in two low-income households. The controls will be futureproofed to facilitate integration with other smart home devices.
It is estimated that the ability to shift load to off-peak hours would reduce residential customers’ energy costs (relative to using heat pumps without load flexibility controls) by $28-107 per year, returning the investment in the controls in 3 to 10 years.
It is estimated that the heat pump load flexibility controls for water heating and space conditioning could reduce emission by 8,267 metric tons of CO2eq emissions as well as reduce criteria pollutant emissions through reduction in natural gas and electricity use for heating and cooling over the next 30 years.
It is estimated that advanced load flexibility controls for water heating and space conditioning could shift a total of 7930 MWh and 28,344 MWh of energy use, respectively, to off-peak times resulting in improved grid reliability.
Key Project Members
TRC Engineers, Inc.
Mutual Housing California
Quetzal Gardens L.P., managed and controlled by Resources for Community Development (RCD)
Southern California Edison
Western Cooling Efficiency Center - UC Davis