Electrician Prospect 2148

Grid loss can stop solar

The Australian Government's solar guidance explains that very few solar-only systems can provide backup during a power outage. Grid-connected equipment normally stops supplying power when the grid is down to protect people working on the network. Sunlight reaching the panels is therefore not evidence that household outlets will remain supplied. This is a distinction between available sunlight and the system's permitted operating mode, not a finding that a particular inverter or installation has failed.

For a Prospect enquiry, begin with the installed system's documentation rather than a generic solar or battery label. Say whether the question is about an existing backup arrangement, a proposed addition or an observation during an outage that has already occurred. Retain the relevant installer information and equipment identities already held. Do not interrupt grid supply, operate isolators or use an app to create an outage trial. A system's normal production record cannot by itself establish how it is configured to behave without the grid.

Australian Government: batteries and outage backup

Can solar refill the battery?

The government guidance makes a further distinction within battery systems: some use the stored battery energy during an outage while solar generation stops; others can operate separately from the grid and recharge the battery from solar. Battery backup and solar charging during backup are therefore two questions, not one. Knowing that a battery is installed does not answer either without the relevant configuration, and knowing that selected circuits have backup does not automatically answer the solar-recharge question.

Ask the responsible solar or battery specialist to confirm whether the installed arrangement can recharge from PV while operating in its backup mode, as well as which circuits that mode serves. Keep their answer specific to the current equipment and completed work. A brochure describing an optional capability is not evidence that it was included in the installation. Do not turn a statement that solar recharge is possible into an assurance that enough energy will always be available or that every household load can be supplied.

Keep each claim in scope

The government's design guidance treats backup as a goal to discuss when specifying a system. Define the desired outcome before interpreting an existing quote or arranging electrical work: power to named loads, solar recharge while in backup, and the extent of the supplied circuits each need clear answers. A proposal to add a battery should not silently promise all three. Where the provider has not established a capability, record it as unresolved rather than filling it in from the system's size, price or brand.

Keep the specialist's configuration findings with any separate electrical assessment and ask what remains outside the completed scope. This enquiry guidance does not establish that EVAREADY installs, commissions or services solar or battery systems, and it does not replace advice from the responsible authorised provider. No runtime, medical-device continuity, automatic transfer performance or whole-home supply is guaranteed. Account credentials and installer settings should remain private; understanding the documented backup mode does not require sharing access or changing controls to prepare a booking.

Australian Government: backup as a solar design goal