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Solar Panels in 2026: Payback Period, Savings, and Whether They're Still Worth It

March 2026 • 6 min read
Solar panels on a residential rooftop with blue sky

There's barely a suburb in Australia without at least a few rooftops bristling with solar panels. About one in three Australian homes now has solar, making us one of the most solar-saturated countries on the planet. But that doesn't mean it's automatically the right call for you in 2026.

The situation has changed quite a bit over the past few years. Upfront system costs are lower than ever, which sounds great. But feed-in tariffs (what your energy retailer pays you for the power you export to the grid) have also fallen off a cliff in most states. The maths looks different depending on where you live, how much power you use during the day, and what you actually pay for electricity.

Let's work through it.

What Does a Typical Solar System Cost in 2026?

System prices vary by size, brand, and installer, but here's a rough guide for a quality installation from a reputable company:

These prices are after the federal government's Small-scale Technology Certificates (STCs) rebate is applied. The rebate is built into the installer's quote, so you don't have to claim it yourself. The STC rebate is set to phase out completely by 2031, so prices will gradually creep up from here.

Adding a battery? That's another $8,000 to $15,000 on top for a 10–13kWh battery system. We'll talk about batteries separately, because the payback period is a very different story.

How Much Can Solar Actually Save You?

There are two ways solar saves you money:

  1. Self-consumption: Power you generate and use yourself, avoiding grid electricity at retail rates (typically 30 to 40 cents per kWh in 2026).
  2. Feed-in tariff (FiT): Power you generate but don't use, exported to the grid. Most retailers are now paying 5 to 10 cents per kWh, down from 20+ cents a few years ago.

This is the key insight: the savings from self-consumption are roughly four times more valuable than the savings from exporting. So the more power you use during sunlight hours, the better your solar investment performs.

Rule of thumb: If you're home during the day, run a small business from home, or can shift your heavy appliances (dishwasher, washing machine, pool pump) to daytime hours, solar works a lot harder for you.

Sun Hours by State: Not All Rooftops Are Equal

Australia is a big country, and how much energy your panels generate depends heavily on how many "peak sun hours" your location gets per day. Here are the approximate daily averages:

A 6.6kW system in Brisbane generates noticeably more electricity over a year than the same system in Melbourne. Tasmanians can still get decent returns, but the payback period is longer and the numbers need to stack up before committing.

Worked Example: A 6.6kW System in Sydney

Let's put some real numbers together. Assumptions:

Annual savings:

Payback period: $6,500 ÷ $1,673 = 3.9 years

After that, you're looking at essentially free electricity for the remainder of the system's lifespan (typically 25 years with a good panel warranty). That's a decent return in anyone's language.

If you could shift more usage to daytime hours, say 60% self-consumption instead of 40%, the annual benefit jumps to around $2,000 and payback shrinks to about 3.3 years.

Want to run the numbers for your own situation? The Solar Savings Calculator lets you plug in your state, system size, electricity rate, and usage patterns to get a personalised payback estimate.

Feed-in Tariffs in 2026: State by State

Feed-in tariffs have been falling for years, and the trend has continued into 2026. Typical rates from major retailers:

These figures change, and retailer offers vary. It's worth comparing plans before signing up, especially if you're generating a lot of excess power. Some retailers offer time-varying feed-in rates, meaning you get paid more for exporting during peak demand periods (usually late afternoon/early evening).

Should You Add a Battery?

Batteries are having a moment. They let you store daytime solar generation and use it at night, which sounds perfect. The catch is the upfront cost and the payback maths.

A 10kWh battery might save an extra $800 to $1,200 per year in electricity costs. At a cost of $10,000 to $13,000, you're looking at an 8 to 15 year payback on the battery alone. Most batteries carry 10-year warranties, which makes the numbers pretty tight.

Batteries make more sense if:

For most households in 2026, solar-only is still the better financial decision. Add the battery later when prices drop further, or if your circumstances change.

Things That Can Hurt Your Returns

Not every roof is created equal. A few factors that can eat into your solar savings:

The Verdict

For most Australian households in 2026, a quality 6.6kW solar system is still a very solid financial decision. Payback periods of 3 to 6 years are common, with free power for the 20-odd years after that. The economics aren't quite as stunning as they were when feed-in tariffs were higher, but they're still compelling.

The more you can shift your electricity usage to daytime hours, the better your return. If you're home during the day, run a pool pump, or can set your dishwasher and washing machine to run while the sun's up, solar works harder.

If you're a shift worker who's never home during the day, it's still worth it, just not spectacularly so.

Before you sign anything: Get at least three quotes, check that installers are CEC-accredited, and verify the products are on the Clean Energy Council's approved list. The cheapest quote is not always the best value when you're putting something on your roof for 25 years.

Run the numbers for your home with the Solar Savings Calculator, and if you want to compare how the savings stack up against paying down your mortgage, the Offset Mortgage Calculator can help you think through the trade-off.