What is SunClick?

SunClick is a compact, intelligent circuit controller designed to be installed directly inside your switchboard. It controls your resistive electric water heater, to find a better time each day for it to run — making the most of local solar and lower-cost power.

When local solar power generation is high, local grid voltage rises. SunClick monitors your local voltage, and by learning from your power usage, it selects a time when your electric water heater should run to make the most of available solar that day - whether or not you have your own rooftop solar system. 

If your electricity tariff structure varies at different times of day, SunClick can factor this in too, favouring low-cost periods as well as periods with higher solar availability.

Your water heater keeps working exactly as it always has — there's nothing to change and nothing you need to monitor day to day.

SunClick also has a companion app that lets you monitor your system, track estimated savings, and override control if you choose to at any point.

By shifting water heating to periods of high local solar generation, SunClick helps absorb excess solar energy and eases voltage rise on the local grid — supporting a more stable network for the whole street.

Coming soon: a step-by-step visual walkthrough of voltage and device state changes, plus before-and-after grid draw and voltage data across Australian states.

SunClick is designed to control single-phase circuits for resistive electric water heaters. It is suitable for any resistive electric water heater up to 3.6 kW.

SunClick is not suitable for heat pump systems.

Unlike a solar diverter system, SunClick does not require you to have your own solar PV system for you to benefit. It works from the local voltage measurement, so it suits a home with or without solar panels.

Our first case study follows a two-person household in a medium-density Melbourne suburb, monitored over late spring and winter.