Energy

Solar, batteries and charging

Inverters, export limits, home batteries, EV chargers and the electrical load of Adelaide hot water.

Rooftop solar photovoltaic panels on an Australian house

Photograph: Shiftchange. Licence: CC0. Source on Wikimedia Commons. Also listed on our image credits page.

South Australia learned to live with rooftop solar earlier than most of the country. The result is a city of inverters humming in garages from Mawson Lakes to Marino, a network operator with opinions about export, and a generation of homeowners who can talk about kilowatts at a barbecue. That familiarity is useful. It is also how people talk themselves into a battery or a wall charger without looking at the board that has to host them.

This hub is the unhurried version of those conversations. Solar on Adelaide roofs is about orientation, inverters, isolation and the questions that still matter after the rebate years. Home batteries is about what is left when the headline subsidy is gone. EV chargers in garages and carports is about load, earthing and the difference between a mode 2 lead over a brick and a dedicated circuit. Hot water and heat pumps is the quiet load that wrecks a “the board is fine” assumption. The Hills piece on off-grid fantasies is for readers who have just been quoted a generator and a shed full of lithium.

Energy work is still electrical work. Inverters, batteries and chargers sit on the same Certificate of Compliance regime as a new oven circuit. They also sit on SA Power Networks’ connection rules. We do not sell panels. We do write about the switchboard and the paperwork so you can tell a careful installer from a cheerful one. If the board itself is the constraint, walk back to switchboards and wiring before you sign anything that assumes spare ways and a spare phase.

An electric vehicle at a dedicated charging station

Installing an EV charger in an Adelaide garage or carport

A dedicated charger is a new circuit, an earthing question and a conversation with the rest of the house — not a gadget that happens to live on a brick wall. Look at the board before you look at the car.

A Rheem electric storage water heater in a service cupboard

Hot water, heat pumps and the electrical load they hide

The cylinder in the cupboard does not have a screen, which is why people forget it is one of the largest electrical decisions in the house. Off-peak, inrush and solar-sponge thinking only work if the board can host the current.

Hub introduction word count: 264.