Cyclone Alfred: Queenslanders with solar PV systems told to shut them down before cyclone arrives

If you have solar panels on your roof, you need to do this now before Tropical Cyclone Alfred arrives, experts warn.

Queenslanders with solar PV systems have been told to shut down their systems before Tropical Cyclone Alfred hits.

With the cyclone expected to cross Queensland’s coast early on Friday, Energex area manager Chris Graham said cyclones could potentially impact solar PV systems.

“When you know a storm or flood is coming, it’s a good idea to shut down your solar power system,” Mr Graham said.

“You should always follow your installer’s shutdown procedures. These can usually be found at the inverter and/or on the main switchboard.

Energex area manager Chris Graham said cyclones could potentially impact solar PV systems. Picture: iSTOCK

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“Most shut down procedures will ask you to turn off the inverter AC mains isolator which is usually found in the metre box. It is very important to turn the AC mains isolator off first and then also to turn off the photovoltaic (PV) array DC isolator which is usually found next to the inverter.

“Under no circumstances should a homeowner climb onto the roof to touch the solar system or its components.

“If you are unsure of the shutdown procedure, contact the manufacturer or installer.

“Even though grid-connected solar PV systems cannot supply the home when the network is not operational, they can continue to generate direct current (DC) power.”

Mr Graham said it was critical to remember solar panels and their cables should always be treated as if they were live.

“Customers should not attempt to reconnect solar PV systems after severe storms or roof damage, as their roof may be electrified,” he said.

“Do not access the roof without having the system checked first.”