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Is Solar Worth It in 2025? Here’s the Real Cost vs Savings Breakdown
Solar Panel Costs in 2025
The initial expense of solar panel installation has reached a stabilising point in 2025 following years of consistent decreases. In the case of an average 6.6 kW system, which is the sweet spot in most families, installed costs (with rebates) will be in the range of $4,500 to $6,000, depending on the quality of the panels and what is being offered by installers. Smaller systems (3-4kW) begin at approximately 3-4000 dollars, and larger systems such as 10kW can cost $8,000 to $12,000.
- Panel efficiency and warranty (premium panels cost more up front)
- Roof complexity, pitch, and access
- Whether a battery is included (see below for battery costs)
- Regional variations in rebates and installer labour rates
Ballarat Solar Rebates and Incentives Explained
Rebates & Incentives in Ballarat and Victoria
Realistic Energy Bill Savings
- With a standard 6.6 kW solar system, households can cut grid electricity use by 40–60%, saving $1,000–$1,500 per year on average, even more for those with high daytime consumption or efficient energy management.
- With a 4-kW system, average annual savings are around $890 for Ballarat homes.
- With a battery, add an extra $400–$500 per year to your savings by using stored power at night.
Payback Period & Return on Investment
- Payback periods for solar panels (no battery) are now as low as 3–5 years, depending on household usage and self-consumption rates.
- After payback, all future savings are “profit” over the 20- to 25-year life of the system.
- Solar’s projected ROI for 2025 ranges from 6% to 20% annually, far exceeding most bank deposits or low-risk investments, with the added benefit of rising energy costs over time.
The Solar Math a Worked Example
For a Ballarat household with a 6.6 kW system:
- Installed cost (post-rebate): ~$5,500
- Annual savings: ~$1,200–$1,500
- Payback: ~4 years
- Total profit over 20 years (factoring in performance drop and minor maintenance): $18,000–$22,000
Key Drawbacks and Limitations in 2025
- Upfront cost remains the primary barrier, even with finance or lease deals.
- Lower feed-in tariffs mean solar is the most rewarding for that home during the day.
- Battery economics is improving, but payback is slower than panels alone.
- Home energy usage habits need to be adapted for maximum benefit.
Environmental Benefits
Choosing the Best Solar Installer in Ballarat
Conclusion
Follow-Up Support
You might save money in the long term on replacement, in case of broken panels, water damage, or an old inverter that breaks repeatedly. Newer equipment can also improve efficiency. The team at Sun 2 Solar can test your system and let you know whether repair or replacement is the smarter choice.


