Switch to Solar: Is It Worth It in 2025?

Key Takeaways

• Switching to solar can greatly reduce electricity bills and your carbon footprint. Pairing solar with efficient reverse cycle air conditioning boosts savings even further.
• Rebate programs, like the Small-scale Technology Certificates program, make solar affordable. This includes the Solar Homes program and Cheaper Home Batteries program (for solar batteries).
• Most solar installations pay for themselves within 4–5 years through energy bill savings.
• Residential solar systems (6.6kW, 10kW, and 13kW) cost between $4,000–$14,000 after rebates, providing long-term savings.
• Larger systems like an 80kW setup for businesses cost around $76,000.
• Adding a solar battery provides nighttime energy and backup power. New federal rebates cover roughly 30% of battery costs, making solar + battery setups even more attractive.
• Reverse-cycle air conditioners work extremely well with solar. Panels capture sunlight to power cooling in summer and heating in winter at minimal cost during the day.
• Solar energy reduces bills, protects against rising electricity prices, and lowers emissions. Upfront cost and nighttime limitations are offset by rebates, batteries, and grid connections.

Why Switch to Solar?

There’s never been a better time to switch to solar. Solar technology is now more advanced and affordable than ever, with rebate programs, such as the Solar Homes Rebate program, offering generous incentives for upgrading to solar. Not just that, but you can also store power from the sun for later with solar battery storages, and the Cheaper Home Batteries program makes batteries – well, a lot more affordable!

In addition, the Small-scale Renewable Energy Scheme offers STCs (Small-scale Technology Certificates) on the upfront installation cost for eligible energy systems, like solar.

But at the same time, electricity prices are climbing.

By installing solar, households can generate clean energy at home for less than they’d pay the grid. It’ll save you over $1,000 a year. It’s a smart way to reduce bills and protect against future price hikes, all while making your home more energy independent.

But the benefits go beyond savings. Solar is also one of the most effective ways to reduce your carbon footprint. Great incentives from the state and federal governments make solar even more attractive. They cover thousands of dollars in upfront costs and interest-free loans.

With payback periods as short as 4–6 years, switching to solar isn’t just environmentally sound. It’s a high-return investment that keeps paying off for decades.

Solar System Sizes & Costs (6.6 kW, 10 kW, 13 kW)

One of the first steps is figuring out what size solar system you need. The good news is that in 2025, larger systems are more affordable than ever, so you can “go big” to cover more of your usage. Still, the optimal size depends on your household’s consumption, roof space, and budget. Popular residential sizes are 6.6 kW, 10 kW, and 13 kW systems. These range from roughly 16 to 32 panels on your roof. The table below gives an overview of these common system sizes, their typical costs, and which home types they suit best:

Costs above are illustrative averages for 2025. Actual quotes may vary based on equipment brands and site specifics. Small-scale Technology Certificates (STCs) rebates are included in “after STC” prices. Meanwhile, the Solar Panel rebate (up to $1,400) is applied in the final column for eligible owner-occupiers.

When Should You Go Bigger? 

If your household or business uses a massive amount of electricity, stepping up to a 10kW or 13kW system might be a smart move.

• 10kW: Up to around $5,300 after rebates
• 13kW: Up to around $7,200 minimum after rebates
• Generates 40–50+ kWh per day

These systems can cut bills to near zero and often generate extra power to feed back to the grid.

But keep in mind: feed-in tariffs (FiTs) are modest, around $0.05–$0.10/kWh. It’s best to use your solar energy directly during the day rather than export too much.

A good rule of thumb is the “20% rule”: your system’s yearly output should be about 120% of your annual usage, no more. Oversizing too much means diminishing returns.

What About Really Large Systems?

Large systems like 80kW setups, can cost around $75,000 after rebates, are mainly for commercial properties or large complexes. That’s about $950 per kW, lower than residential cost due to scale.

For homes, anything above 15–20kW is usually overkill, unless you have massive usage or are going off-grid.

So, Is Switching to Solar Worth It?

Yes and now is the ideal time. Solar panel prices are low, and rebates are still high. But federal rebates reduce each year and end by 2030, so early adopters save more.

Victoria is also pushing for home electrification, making solar more useful than ever. More homes are ditching gas for solar + electric heating, and tools like solar savings calculators and smart apps make going solar easy.

With expert help from your accredited providers, switching is simple. AND you’ll see the benefits for decades.

Solar panels work only during the day, but that’s when air conditioner use is highest. With solar, you can cool your home using free sunlight—a perfect match on hot days.

In winter, solar can power your reverse cycle air conditioner to heat your home. These systems are super-efficient, so they produce 3–5 times the heating per unit of electricity.

If you also have a heat pump water heater, set it to run in the afternoon to use solar power for hot water—essentially heating for free. 

Now, adding a battery lets you store solar energy for night use or blackouts. A 10kWh battery costs around $8,000–$12,000 before rebates. This can stretch the payback period to 8–12+ years.

However, new incentives help:

• Victoria’s Solar Homes battery rebate: Up to ~$2,950
• Federal Cheaper Home Batteries Program (from July 2025): ~30% rebate on battery cost

With these, a battery becomes more affordable and attractive. Especially for energy independence or blackout protection.

Pro tip: if you can’t afford a battery now, start with panels, then add a battery later. Just make sure your inverter is battery-ready or can be upgraded.

Do the Pros Outweigh the Cons?

Yes. The main downsides—upfront cost and nighttime limits—are now solved by rebates, cheaper prices, and batteries.

• Solar cuts bills by 50–90%
• Can eliminate bills completely in some cases
• Rebates reduce upfront costs by thousands
• Minimal maintenance and 25+ year panel lifespan
• Panels can be recycled when retired

Final Thoughts

Don’t wait for the next rate hike or a hotter summer – make the switch to solar now and enjoy immediate benefits. Ready to take the next step? Switch to solar with Gridless and start saving with the sun today! Give us at Gridless a holler for a free consultation and personalised quote. Our experts will help you compare system options and advise on how solar can best support your heating and cooling needs, and enjoy year-round comfort with lower bills.

Go solar — the right way.

Frequently Asked Questions (FAQs)

Q: Is it worth it to switch to solar in Victoria?

A: Yes, Victoria’s sunny climate and incentives make solar worth it. Solar panels typically save homeowners about $1,000 or more per year on electricity bills. With government rebates lowering upfront costs, most systems pay for themselves within 4–6 years. While this goes on, you’re already reducing your carbon footprints, and helping our Earth!

Q: Do solar panels work at night or on cloudy days?

A: Solar panels need sunlight, so they don’t produce electricity at night. During nighttime or cloudy days, your home uses energy from the grid or a battery system. On cloudy days, solar panels still generate electricity, but output drops to 10–30%. Pairing solar panels with a battery ensures stored solar energy can power your home during dark or cloudy periods.

Q: How long do solar panels last and what happens after 25 years?

A: Solar panels last 25–30 years or longer. Manufacturers providing 25-year warranties guarantee about 80–85% of original performance. After this period, panels gradually produce less energy but still work.

Q: What is the “120% rule” (a.k.a the 20% rule) in solar installations?

A: The 120% rule is a safety guideline for solar installations. It limits how large a solar inverter you can connect based on your electrical panel’s rating, to prevent overload. Typically, your solar backfeed current plus your main breaker current can’t exceed 120% of your panel’s rated capacity. Professional installers ensure your system complies with this rule, so homeowners rarely need to worry about it.

Q: Will solar panels damage my roof or cause any other issues?

A: Solar panels won’t damage your roof if professionally installed. Quality installers use secure mounting systems to prevent leaks and damage. Panels actually protect the roof beneath by shielding it from weather. Efficiency might slightly drop on extremely hot days, but longer daylight hours usually balance this out. Overall, solar panels are safe, durable, and low-maintenance.