If you’re living in Wollongong or the surrounding regions of the Illawarra, there’s never been a better time to consider investing in solar power. With the price of electricity on the rise and federal incentives still available, more households and businesses are making the smart switch to solar.
In this detailed guide, we’ll cover everything you need to know about solar panel costs in Wollongong in 2025, including average system prices, financial incentives, return on investment, and why partnering with a local installer like Stuart Johnston Electrical makes all the difference.
Why Are Solar Panels So Popular in Wollongong?
Wollongong enjoys over 250 sunny days per year, making it an ideal location for solar power generation. With energy bills rising and NSW households increasingly looking for sustainable alternatives, solar power is no longer just an eco-conscious decision—it’s a financially smart one too.
On top of that, property owners in Wollongong benefit from:
- Generous solar feed-in tariffs
- Government rebates and incentive schemes
- Lower costs for system installation compared to previous years
- Proven return on investment within a few short years
Average Solar Panel Costs in Wollongong (2025)
The cost of installing a solar power system in 2025 depends on a few key factors: system size, quality of panels and inverter, complexity of installation, and eligibility for rebates.
Here’s an updated table of average solar system prices in Wollongong, based on current market research:
| System Size | Avg. Cost After STC Rebate (incl. GST) | Daily Output (est.) |
|---|---|---|
| 3kW | $4,134 | 12 kWh/day |
| 5kW | $5,439 | 20 kWh/day |
| 6.6kW | $6,541 | 25 kWh/day |
| 8kW | $7,928 | 32 kWh/day |
| 10kW | $9,910 | 38 kWh/day |
| 13kW | $12,883 | 50 kWh/day |
Note: These prices include full installation, quality panels and inverter, STC rebate, racking, cabling, and GST. Actual costs may vary slightly based on your roof structure, preferred equipment, and installation complexity.
Source: Solar Choice
How Much Does a 6.6kW Solar System Cost in Wollongong?
A 6.6kW solar system is the most popular residential size in Australia. In Wollongong, the average price for a quality system in 2025 is approximately $4,950 after applying the Small-scale Technology Certificate (STC) rebate. This system typically powers the energy needs of a medium-sized household and provides a solid return on investment within just a few years.
What Affects the Cost of Solar Panel Installation?
When quoting for a solar panel system in Wollongong, several key factors come into play:
- System Size
Larger systems cost more upfront but generally provide a lower cost-per-watt installed. More panels = more energy = more savings. - Type and Brand of Equipment
Premium solar panels (e.g. trina) and inverters (e.g. Fronius, SMA, sungrow) come with higher price tags but offer better warranties and efficiency. - Installation Complexity
If your home has a steep or multi-storey roof, limited space, or shading issues from trees or neighbouring buildings, installation may be more labour-intensive (and slightly more expensive).
Government Rebates and Incentives in NSW (2025)
The upfront cost of solar in Wollongong can be significantly reduced thanks to available rebates and programs:
Small-scale Renewable Energy Scheme (SRES)
This is a federal rebate applied at the point of sale through STCs (Small-scale Technology Certificates). In 2025, a typical 6.6kW system receives over $2,000 in STC discounts.
NSW Battery Incentives
Households that install a solar battery may be eligible for $1,600 to $2,400 in rebates through the Peak Demand Reduction Scheme. This makes energy storage more accessible for homeowners.
Virtual Power Plant (VPP) Bonus
If you sign up with a participating energy provider and join a VPP, you may receive a $250–$400 bonus upfront. This program lets your home battery help stabilise the energy grid during peak times.
More info: NSW Government – Energy Saver Program
Return on Investment
Investing in solar panels not only reduces your carbon footprint but also offers substantial financial benefits. For instance, a 6.6kW system in Sydney can generate around 25 kWh per day, leading to annual savings of over $2,500 if you consume approximately 70% of the solar power as it’s generated.
With the current pricing and incentives, the payback period for a solar system can be as short as 3 to 5 years, after which you can enjoy free electricity for the lifespan of the system.
Solar Panel Installation in Wollongong – Local Insights
Wollongong homes typically have ideal roof space and orientation for solar panel installation. Our local climate, with long sunny days and moderate temperatures, ensures that solar systems perform efficiently year-round.
Popular suburbs for solar in 2025 include:
If you’re in or around these areas, Stuart Johnston Electrical can provide fast, local service and tailored energy solutions.
Why Choose Stuart Johnston Electrical?
Stuart Johnston Electrical is a trusted name for solar panel design and installation in the Wollongong region. We understand the local landscape, council requirements, and how to get the most out of your roof.
- Local Expertise: We’re based in the Illawarra and have installed hundreds of solar systems for homes and businesses throughout the region.
- Quality Components: We only install Tier 1 solar panels and leading inverter brands backed by solid warranties.
- Personalised Design: Each system is custom-designed to suit your roof, energy usage patterns, and long-term goals.
- Support from Start to Finish: From quoting and rebates to monitoring and servicing, we’re with you every step of the way.
Get a Free Quote Today
Looking to reduce your power bills and take control of your energy future?
Contact Stuart Johnston Electrical today for an obligation-free solar consultation. We’ll assess your roof, energy needs, and provide a clear quote with no hidden fees.
Call us now or request a free measure and quote!