RTF analysts developed per unit technical potential estimates for demand response impacts from connected thermostats. When demand response events are called, connected thermostats reduce the usage of heating and cooling systems by adjusting thermostat set points: upward during summer to reduce cooling load, and downward during winter to reduce heating load. Importantly, the demand impacts are not coming from the thermostat itself, but from the HVAC technology being controlled. Therefore, impacts are determined by individual household characteristics, such as heating/cooling system technologies, efficiencies, size, and shell, as well as event-specific conditions, such as weather, time of day, and the size of the thermostat setback.
RTF Presentation Connected Thermostat DR Workbook DR Subcommittee Presentation DR Subcommittee Notes