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Preparing for a Power Outage and Choosing Essential Loads

Check what your system can back up and plan how to make stored energy last during an outage.

A battery does not automatically mean every circuit will work during a blackout. Backup depends on the equipment, wiring and settings installed at your property.

Check your backup arrangement before an outage

  • Use your handover documents to identify the backed-up circuits and maximum backup power.
  • Ask MyEnergy if you are unsure whether your fridge, water pump, internet equipment or other important appliances are included.
  • Confirm whether solar can recharge the battery while the grid is off. This depends on the system design.
  • Find your approved battery reserve and generator arrangements, where fitted.

Do not test backup by operating isolators or switchboard controls without an agreed procedure from MyEnergy.

Plan which appliances matter most

List essential lighting, refrigeration, communications and any necessary water supply. Then identify loads you can pause, such as EV charging, pool pumps, electric hot water and workshop equipment. Keep high-demand appliances from running together.

Power (kW) is the demand at one moment. Energy (kWh) is how much is used over time. A 1 kW load running continuously for three hours uses 3 kWh. Actual backup time also depends on usable battery energy, the reserve, conversion losses and changing appliance demand; the displayed percentage alone cannot predict it.

Keep a separate emergency plan

Keep torches, charged phones and essential contact details available. If someone relies on medical or life-support equipment, arrange a backup plan with their equipment provider and health team. Where applicable, register with the electricity retailer or network. Do not rely on the home battery as an uninterrupted or guaranteed supply.

During the outage

  1. Check for hazards first and follow emergency advice.
  2. Use only the circuits confirmed for backup and reduce unnecessary loads.
  3. Watch battery charge and alarms using current local readings or fresh monitoring data.
  4. If power is lost or alarms remain, follow Property Has Lost Power and contact MyEnergy.

For Deye installations, also see Deye backup power. General background: Australian Government battery guide.

Need help?

Submit a MyEnergy support request, email support@myenergysolar.com.au or call 1300 706 870, option 3. Include your site address, the time of the issue, battery percentage and any alarm photos.