Smart Home Automation to Reduce Electricity Bills in Australia

Published 24 February 2026

Smart home automation can reduce your electricity bill by making energy decisions automatically 鈥?turning off standby loads, running appliances at the cheapest time, and coordinating your solar, battery and high-draw devices without manual scheduling. This guide covers what actually works and what is more hype than savings.

What smart home automation can and cannot do for energy

Can do:

• Turn devices off completely during periods of non-use (eliminating standby draw)
• Schedule high-draw appliances to run during cheap tariff periods or solar generation hours
• Trigger appliances when solar surplus exceeds a threshold
• Monitor which devices are drawing power and when
• Reduce heating and cooling waste via smart thermostats

Cannot do:

• Reduce the energy an appliance uses while running (an inefficient appliance is still inefficient whether smart or not)
• Retroactively shift loads 鈥?automation must happen before or at the time of use
• Replace behaviour change 鈥?a household that runs the dryer at 7pm every day will save more by rescheduling it than by installing automation that does nothing at 7pm

Level 1: Smart plugs (lowest cost, easiest start)

A smart plug with energy monitoring is the entry point. At $25鈥?60 each, they let you:

• Measure exactly what an appliance draws
• Set schedules (run washing machine at 11am, off at 12pm)
• Turn devices off remotely when you forget
• Create simple automations ("turn off at 10pm if on")

Best candidates for smart plug automation:

• Set-top boxes and streaming devices that draw 10鈥?8W continuously even in standby
• Second fridges or chest freezers you only need occasionally
• Pool pumps (if compatible 鈥?check wattage rating first)
• Desktop computers and home offices that stay powered overnight

Level 2: Solar-triggered automation

If you have solar panels, the most valuable automation is running high-draw loads when your solar surplus is highest.

Basic approach 鈥?schedule by time:

Set appliances to run between 10am and 2pm. Simple, no special hardware required. Effective on most clear days.

Advanced approach 鈥?solar surplus triggers:

Some smart home platforms can read your solar inverter's real-time generation data and trigger automations when surplus exceeds a threshold. Examples:

• "When solar surplus > 2kW for 5 minutes, turn on pool pump"
• "When solar surplus > 1.5kW, start dishwasher"
• "When solar generation falls below 500W, turn off EV charging"

This requires a solar inverter with a local or cloud API (Fronius, Sungrow, SolarEdge, Enphase all have APIs), a smart home platform that can read it, and compatible smart switches.

Level 3: Smart home platforms

Google Home / Amazon Alexa

Suitable for voice control and simple automations. Integration with energy data is limited. Better for convenience than energy optimisation.

Apple HomeKit

Similar to Google Home 鈥?strong ecosystem for Apple users, limited energy-specific automation.

Home Assistant (open-source, self-hosted)

The most capable platform for energy automation. Can integrate with almost any solar inverter, smart meter, battery system and smart device. Supports complex automations: "charge battery from solar only when above 80% state of charge and electricity price is above $0.30/kWh."

Home Assistant has a steep initial setup curve but is free (software) and does not depend on any vendor's cloud service. Well suited to technically capable households or those willing to invest time in setup.

Zappi + Myenergi ecosystem

The Zappi smart EV charger is specifically designed for solar-integrated EV charging. The Myenergi ecosystem also includes the Eddi (solar diverter for hot water heaters) and Libbi (battery). An energy-specific ecosystem rather than a general smart home platform.

Smart thermostats and air conditioning control

Air conditioning accounts for 20鈥?0% of electricity use in summer for many Australian households. Smart thermostats and AC controllers can:

• Set temperature schedules (cooler during sleep, reduced during unoccupied periods)
• Pre-cool the house during solar hours at a lower effective cost
• Respond to occupancy sensors rather than fixed schedules
• Enable remote control when plans change

Products compatible with Australian ducted and split-system ACs include Sensibo, Aircon.cc and various inverter AC brands with built-in Wi-Fi (Mitsubishi Electric, Daikin, Samsung etc.).

A smart AC controller for a split system typically costs $100鈥?200. For households that run air conditioning daily in summer, the ability to avoid leaving it running unoccupied can recover that cost within one season.

Where to start

Rather than automating everything, start with the highest-draw appliances:

1. Measure first: Install a smart plug on your top 3 suspected high-draw devices and measure actual usage for a week

2. Automate the biggest offender: Pool pump, hot water boost, second fridge 鈥?whichever draws most

3. Add solar scheduling: Move high-draw loads to solar hours once you know what they are

4. Add convenience automation later: Lighting, voice control and other convenience features after the energy wins are captured