Solar vs Gas in Australia: Which Is Cheaper to Run in 2026?

📋 In this guide:

• Solar vs gas in Australia: all-electric homes win on cost
• Gas supply charges add up even with low use
• Electric hot water and induction beat gas on running cost
• Disconnecting gas removes a daily fixed charge
• Tesseract ZERO powers an all-electric home at a fixed rate

For decades, gas was the default in Australian homes for hot water, heating and cooking, and electricity was the expensive bit you tried to minimise. In 2026, that’s flipped. When you actually run the solar vs gas Australia numbers, the home powered by your own solar usually comes out cheaper, and the gap is widening every year as gas prices climb and electric appliances get more efficient.

There’s a quiet cost most people overlook, too. Even if you barely use gas, you’re still paying a daily supply charge just to keep the connection. Two utilities, two standing charges, two sets of price rises. For a lot of households, dropping one of them is the easiest saving on the whole bill.

This guide compares the running costs honestly, covers what it takes to disconnect gas, and looks at what an all-electric home powered by solar really looks like.

Why Australians Are Rethinking Gas

A few things have shifted at once. Wholesale gas prices have risen sharply, dragging up household rates. Electric appliances, especially heat-pump hot water and reverse-cycle aircon, have become dramatically more efficient, doing more heating per unit of energy than gas ever could. And solar means a chunk of that electricity can come from your own roof at a fraction of grid cost.

Put those together and the old logic, “gas is the cheap way to make heat,” no longer holds for most homes.

Solar vs Gas: Running Costs Compared (Hot Water, Heating, Cooking)

Hot water. A heat-pump hot water system uses roughly a third of the energy of a conventional electric element, and when it runs on daytime solar it’s close to free. Gas hot water has both a usage cost and a standing charge behind it. For most homes, electric heat-pump hot water on solar is the cheapest option to run.

Heating. Reverse-cycle air conditioning is the most efficient way to heat a room in Australia, delivering several units of heat per unit of electricity. Gas ducted heating can’t match that efficiency, and it runs on a fuel that’s getting pricier.

Cooking. Induction cooktops are faster and more efficient than gas, and running them on solar costs little. The difference here is smaller than hot water or heating, but it still points the same way.

Across all three, electricity powered by solar tends to win on running cost. Treat specific figures as a guide and check your own usage, but the direction is consistent.

The Cost of Disconnecting Gas

Here’s the lever people forget. The gas supply charge is a fixed daily cost you pay regardless of how much gas you burn. If you’ve already switched most appliances to electric and you’re only keeping gas for, say, the cooktop, you might be paying a standing charge all year to run one appliance.

Disconnecting gas entirely removes that daily charge from your life. There can be a one-off cost to disconnect and to replace any remaining gas appliances, so it’s worth doing the sums, but once it’s done, that whole second bill simply disappears.

Going All-Electric With Solar and Battery

The full picture isn’t really “solar vs gas.” It’s “an all-electric home running on solar vs a split home running on grid power and gas.” Once every appliance runs on electricity, your solar can power them, your battery can shift that solar into the evening, and you’re down to a single energy bill, ideally a small one.

Picture a Tuesday night: it’s 9pm, the heat-pump hot water topped up from this afternoon’s sun, the reverse-cycle aircon is keeping the lounge warm, dinner was cooked on induction, and the battery, not the grid, is running all of it. No gas bill arriving next month. That’s what all-electric on solar looks like day to day.

Could your home run that way? For most, the appliances are the only thing standing between you and a single, lower bill.

A Real-Life Scenario: Two Bills Become One

Picture an Adelaide family paying two energy bills, electricity and gas, with the gas covering ducted heating, hot water and the cooktop. The gas standing charge alone cost them money every day before they’d cooked a thing. Winter heating bills were the worst part.

They went all-electric over a couple of years: heat-pump hot water, reverse-cycle heating, an induction cooktop, then disconnected gas. Paired with solar and a battery, their winter heating now runs largely on stored daytime sun, and that second bill is gone entirely. One utility, one set of price rises to worry about, and a much smaller total.

Where Tesseract ZERO Fits In

Tesseract ZERO suits the all-electric shift because it’s built to cover real evening load, not just daytime generation. The standard package pairs 6.6kWp of solar with a 20kWh battery and a hybrid inverter, so the power for your heat-pump hot water, reverse-cycle heating and induction cooking can come from stored solar rather than the grid. With $0 upfront, $0 maintenance and a fixed $0.28/kWh for 10 years through the Tesseract retail partner, the electricity running your now-gas-free home stays at a predictable rate while gas prices keep moving.

The Bottom Line

Solar vs gas in Australia in 2026 lands clearly on the electric side for most homes. Heat-pump hot water, reverse-cycle heating and induction cooking are more efficient than their gas equivalents, and running them on solar makes them cheaper still. Add the daily gas supply charge you can remove by disconnecting, and going all-electric often means one smaller bill instead of two rising ones. The main hurdle is replacing appliances, which is worth planning over time.

Thinking about going all-electric? Book a free assessment and we’ll look at whether solar and storage can cover your home’s full load.

For the underlying numbers, see solar energy cost in Australia 2026, and for how this compares to retailer plans read Tesseract ZERO vs electricity retailers. Next in this series we explain the solar PPA in Australia.

Frequently Asked Questions

Is it cheaper to run a home on electricity or gas in 2026?

For most Australian homes, electricity wins, especially when powered by solar. Heat-pump hot water and reverse-cycle heating are far more efficient than gas appliances, and solar cuts the cost of the electricity they use. Removing the gas supply charge by disconnecting adds further savings.

Should I disconnect gas completely?

If you’ve moved most appliances to electric, often yes, because the daily gas supply charge keeps costing you whether you use much gas or not. Factor in any one-off disconnection cost and the price of replacing remaining gas appliances, then weigh that against years of removed standing charges.

Can solar power an all-electric home?

Yes, particularly with a battery. An all-electric home concentrates more load onto electricity, so storage matters: daytime solar charges the battery, and the battery runs the evening heating, hot water and cooking. A well-sized solar-and-battery system can cover a large share of an all-electric home’s needs.