Question 1

How much petrol can I legally store at home in Australia?

Accepted Answer

Australian regulations broadly follow the Dangerous Goods Code, with state variations. In most states, the safe limit for residential petrol storage without a permit is 10–25 litres in approved containers. The total Class 3 flammable liquid limit is 250 litres including fuel in vehicle tanks — so your practical additional storage is limited to 10–50 litres in practice. Diesel is less regulated (Class C1 combustible liquid): up to 250 litres can typically be stored without a permit. Always check your specific state's regulations, as limits vary.

Question 2

How long does petrol last in storage?

Accepted Answer

Untreated petrol (ULP) degrades within 3–6 months in storage — ethanol-blend E10 degrades even faster due to the ethanol absorbing moisture. Signs of degraded petrol include a sour smell, dark colour, and engine rough-running or hard starting. To extend shelf life to 12–24 months, add a fuel stabiliser such as STA-BIL or similar products available at Repco and auto stores. Always use stabiliser when stockpiling fuel and store in approved containers in a cool, shaded location away from heat sources.

Question 3

Can I store diesel at home for emergency use?

Accepted Answer

Yes — diesel is much easier to store than petrol. It is a Class C1 combustible liquid (not a flammable liquid), meaning it has a much lower fire risk and is subject to less strict storage regulations. Up to 250 litres of diesel can typically be stored on residential property in approved yellow containers without a permit in most Australian states. Diesel remains usable for 6–12 months without additives; with a biocide and stabiliser additive, it can last 18–24 months. Store in approved yellow jerry cans in a cool, ventilated location.

Question 4

How much LPG can I store at home in Australia?

Accepted Answer

Standard 9 kg BBQ LPG cylinders (each containing about 9 kg / 13 litres of LPG) can be stored at home without a permit. In most Australian states, you can store up to 100 kg of LPG (about 11 standard 9 kg cylinders) in standard cylinders without a permit. Cylinders must be stored upright, outdoors or in a well-ventilated shed, away from heat sources and ignition points. Never store LPG cylinders inside your home or in a garage attached to the house.

Question 5

What size generator do I need for home use during an emergency?

Accepted Answer

Generator sizing depends on what you need to power. A 2,000W inverter generator can run a fridge/freezer (150–200W), LED lights (40W), phone charging (20W), and a CPAP machine (60W) simultaneously — about 470W continuous draw — for several hours per day. For air conditioning, you need 4,000–6,000W. For most Australian households managing a 24–48 hour outage, a 2,000–3,500W inverter generator ($700–$1,500) is ideal. Inverter generators are quieter, more fuel-efficient, and produce cleaner power suitable for sensitive electronics.

Question 6

Where is the safest place to store fuel at home?

Accepted Answer

Store fuel in a cool, well-ventilated location away from ignition sources, electrical panels, hot water systems, and heaters. Suitable locations: a detached shed with cross-ventilation, a separate storage area away from living spaces, or outside under a covered area. Never store petrol inside your home, in an attached garage, or near a gas appliance. Petrol vapour is heavier than air and can accumulate in low spaces — adequate ventilation is critical. Keep containers tightly sealed and clearly labelled (red for petrol, yellow for diesel).

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Fuel storage in Australia — the rules and the realities