Storm Season Is Coming, and Diesel Is Over $3 a Litre. Here’s the Smarter Power Plan

Australia’s cyclone season isn’t done yet, and diesel just hit record territory. If your business relies on a generator, now’s the time to get it sorted. Not when the lights go out.

Diesel has pushed past $3 a litre across most of Australia. Cyclone Narelle just crossed four states. And April, historically one of the most active months for tropical weather, is only days away.

If you run a business with a backup generator, you’re already in a better position than most. But only if that generator actually works when you need it.

This guide covers two things. What’s happening with diesel prices right now (and how to squeeze more out of every litre), plus a practical storm prep checklist you can work through this week. No fluff. Just the stuff that keeps your operation running.

What’s Happening With Diesel Prices in Australia Right Now

Diesel prices have been climbing hard since late February 2026 after the Middle East conflict disrupted the Strait of Hormuz, a shipping route that handles roughly 20% of the world’s traded oil.

Here’s where things sit as of late March 2026.

Average retail diesel across Australia’s five largest cities hit 303.5 cents per litre as of 25 March, according to the ACCC. That’s up about 10% in a single week. Regional areas are tracking even higher at 307.6 cents per litre.

In Melbourne, terminal gate prices jumped from around 165 cents per litre at the start of March to over 295 cents per litre by 24 March. That’s a 78% increase in three weeks.

Industry analysts and the Federal Treasurer have flagged that elevated prices could stick around for 12 to 36 months, depending on how the geopolitical situation plays out. Australia imports more than 90% of its refined fuel, and our diesel reserves sit at roughly 34 days. That’s well short of the 90 day benchmark the International Energy Agency recommends.

What This Means for Generator Owners

If your business runs a diesel generator, your fuel costs have nearly doubled in under a month. That’s a big hit. But here’s the thing. A well maintained generator uses considerably less fuel than one that’s been neglected.

Dirty filters, old oil, clogged injectors, low coolant. All of these force the engine to work harder, burn more fuel and wear out faster. At $3 plus per litre, a poorly maintained generator isn’t just unreliable. It’s genuinely expensive to run.

The good news? A bit of maintenance now could save you hundreds of dollars over the coming months in fuel alone. And when a storm does knock out your power, you’ll actually have a generator that starts.

Why You Still Need a Diesel Generator

Even with diesel prices rising, a diesel generator remains essential during storm season. When the grid goes down, you need reliable backup power that can start quickly and handle heavy loads for long periods.

For businesses, farms, worksites, and remote properties, the cost of downtime is often much higher than the cost of fuel. A diesel generator helps keep critical equipment, lighting, refrigeration, pumps, and operations running when outages hit.

The key is to use diesel power wisely, not go without it.

Why Storm Season Makes Generator Maintenance Urgent

Australia’s cyclone season runs from November through April. And this year has been one of the most active in recent memory.

Cyclone Narelle Hit Four Times Across Three States

Severe Tropical Cyclone Narelle made landfall on the north Queensland coast on 20 March 2026 as a Category 4 system. Wind gusts topped 115 km/h at Lockhart River. It then tracked across Cape York, re intensified over the Gulf of Carpentaria, slammed into the Northern Territory, and made a fourth landfall in Western Australia on 27 March.

More than 60% of Queensland’s local government areas have needed disaster recovery funding since December 2025. Over 1,000 people were evacuated from remote communities in the NT. Cleanup efforts are still underway across multiple regions right now.

April Is Still Very Much in Play

The Bureau of Meteorology’s official cyclone season runs through the end of April. Their latest tropical climate update (issued 23 March) shows rainfall is likely to be above average for parts of northern Queensland and north eastern Northern Territory through to mid April.

And it’s worth remembering that some of Australia’s most damaging cyclones have formed in April. Tropical Cyclone Errol in April 2025 explosively intensified to Category 5 in the Arafura Sea, catching a lot of people off guard.

If your generator hasn’t been tested recently, don’t wait for the next weather system to find out it won’t start.

Business Storm Prep Checklist: Your Generator

If your operation can’t afford to stop, get through this list before the next system hits. Most of these checks take less than an hour, and they’re the difference between a generator that fires up instantly and one that leaves you in the dark.

Fire It Up and Run It Under Load

Start your generator and let it run under load for 15 to 30 minutes. You want to find problems now, not during a blackout. Listen for anything unusual. Knocking, excessive smoke, rough running. If the engine is hunting or surging, that’s telling you something needs attention.

Gogopower recommends testing your generator weekly. Most failures on startup come from sets that haven’t been run regularly. If yours has been sitting idle for more than a month, a test run is absolutely non negotiable.

Check Your Oil, Coolant and Filters

Pull the dipstick. If the oil is black, gritty or low, change it. Check your coolant level and condition. It should be clean and at the right concentration. Have a look at your air filter and fuel filters too. If they’re overdue, swap them out.

At today’s diesel prices, clean filters and fresh oil aren’t just good practice. They directly affect how much fuel your engine burns. A clogged air filter alone can push up consumption by forcing the engine to run richer than it needs to.

Gogopower generators need servicing every 250 hours as a minimum to maintain warranty coverage and keep the unit running efficiently. A full service, including filter and oil change, should happen at least every 12 months.

Fill Your Diesel Tank

You want at least 72 hours of runtime on hand. Work out your generator’s consumption rate at the load you typically run (check your spec sheet for litres per hour) and make sure your tank and any backup supply can cover three full days.

With diesel supply tighter than usual and some regional servos running short, topping up now is the smart move. Don’t wait until everyone else in your area is scrambling for the same fuel.

Check the Battery and Transfer Switch

If your generator has an auto start function, the battery is everything. A flat battery means your automatic transfer switch can’t kick the generator on when the power drops. Test the battery voltage, check the terminals for corrosion and make sure connections are tight.

While you’re there, test the transfer switch itself. This is the panel that flips your building from mains power to generator power and back again. If it’s not working properly, the generator might run fine but your premises won’t actually receive any of that power.

Business Storm Prep Checklist: Your Site

Your generator is only part of the picture. Here’s what else needs sorting before severe weather rolls in.

Secure Loose Items on Site

Walk your property and look for anything that could become a projectile in high winds. Signage, pallets, loose building materials, outdoor furniture, bins. If it’s not bolted down, it needs to be tied down or brought inside. This isn’t just about protecting your own gear. Airborne objects are one of the biggest causes of damage to neighbouring buildings and vehicles during storms.

Clear Your Drains and Gutters

Blocked drainage is one of the most common causes of preventable flood damage to commercial premises. Get your gutters, downpipes and stormwater drains cleared so water actually flows where it should. A twenty minute job now could save you from a painful insurance claim down the track.

Check Your Insurance

Make sure your business insurance actually covers storm and flood damage. A lot of standard policies have exclusions or sub limits for flood, and most people don’t find that out until they’re trying to make a claim. If you’re not sure what you’re covered for, ring your insurer or broker this week. Seriously.

Back Up Your Business Data

If your business data lives on local servers or on premise systems, make sure it’s backed up to the cloud. A power outage is an inconvenience. Losing your business data is a whole different story. And while you’re at it, make sure your team actually knows the power out protocol. Who does what, in what order, when the lights go off.

Getting More From Every Litre of Diesel

With diesel likely to stay above $3 per litre for the foreseeable future, fuel efficiency is no longer optional. It’s a direct cost to your business every single day your generator runs. Here’s what makes the biggest difference.

Keep up with your service schedule. Servicing every 250 hours keeps your engine running at peak efficiency. Fresh oil reduces friction. Clean fuel filters mean proper injection. A well maintained engine simply burns less fuel for the same output.

Avoid running light loads for too long. Generators are designed to handle varying loads, but running well below capacity for extended periods causes real problems. The engine can’t reach its normal operating temperature, and that can lead to cylinder glazing, where unburned oil forms a lacquer on the cylinder liner. It kills efficiency and can lead to expensive repairs. If you’re seeing blue smoke from the exhaust, that’s your warning sign.

Make sure your generator is the right size for your operation. An oversized unit running at a fraction of its capacity wastes fuel. An undersized one maxed out all day is inefficient and wears out faster. If you’re not confident your current setup is right, the Gogopower team can help you work out your actual load requirements.

Stick with genuine spare parts. Aftermarket filters and components might look cheaper upfront, but they can drag down engine performance and fuel efficiency. Gogopower keeps genuine spare parts in stock for all our generator ranges so you’re not waiting weeks for the right part.

Why Australian Businesses Are Choosing Gogopower

Gogopower supplies diesel generators from 10 to 400 kVA, powered by Cummins and Kubota engines, with PowerLink generator builds available across the range. Every unit is engineered for Australian conditions, and we ship Australia wide.

Factory direct pricing. No middleman markup. You’re buying direct, and our pricing stays consistent year round. No seasonal surcharges, no surprise increases.

Up to 24 month warranty. Backed by local Australian support. If something goes wrong, you’re talking to people here in Australia who actually know the product.

Genuine spare parts on hand. We stock parts locally so you’re not stuck waiting on overseas shipments. When you need a filter, an alternator component or a control panel part, we can get it to you quickly.

Flexible payment options. We get it. A generator is a serious investment. We offer flexible payment terms to help you get the right unit for your operation without putting pressure on your cash flow.

The Bottom Line

Diesel at $3 a litre isn’t going anywhere fast. Storm season has at least another month to run. And every hour your business sits without power is revenue you don’t get back.

If you’ve already got a generator, the smartest thing you can do right now is get it serviced. Fresh filters, clean oil, a full tank. That’s it. Do it this week.

If you don’t have a generator yet, give us a call. Gogopower can help you find the right unit, get it delivered and get it installed. Before the next weather system makes the decision for you.

Already got a genny? Read the full Gogopower maintenance guide for free

Don’t have a generator yet? Browse our full range of diesel generators

Ready to chat? Call us on 1300 957 078 or email sales@gogopower.com.au

Sources: ACCC Weekly Fuel Price Monitoring (27 March 2026), Australian Institute of Petroleum, Bureau of Meteorology Tropical Climate Update (23 March 2026), Queensland Government Disaster Recovery, Core Logistics Fuel Surcharge Report (24 March 2026).