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Peak Reduction Using Mode Adjustment of Heat Pump Water Heaters in a Residential Neighborhood...

Publication Type
Conference Paper
Book Title
2023 IEEE PES Innovative Smart Grid Technologies Latin America (ISGT-LA)
Publication Date
Page Numbers
455 to 459
Publisher Location
New Jersey, United States of America
Conference Name
ISGT Latin America: PES Innovative Smart Grid Technologies Latin America
Conference Location
San Juan, Puerto Rico, United States of America
Conference Sponsor
Conference Date

Building electrification is putting pressure on distribution grid worldwide. Peak reduction is an important concern that can help reduce the growing stress and allow to defer investments in new capacity. Water heaters represent a convenient way of reducing peak because they are less dependent on weather, and their storage volume allows for asynchronous water heating and hot water use. Previous empirical studies investigated the ability of water heaters to reduce peak through the adjustment of the temperature setpoint. However, not all equipment vendors offer this option. This study aims at understanding the feasibility of peak reduction with an alternative configuration available in the market - by adjusting the device mode rather than temperature setpoint. The peak reduction methodology is tested in an occupied 46-townhome neighborhood located in Atlanta, GA. We find that peak shifting is possible with the adjustable mode approach, with the change in the peak load by 30-60%.