WOLLONGONG → Albion Park, Albion Park Rail, Audley, Austinmer, Balgownie, Barrack Heights, Bellambi, Berkeley, Blackbutt, Bombo, Bulli, Bundeena, Calderwood, Clifton, Coalcliff, Coledale, Coniston, Cordeaux Heights, Corrimal, Cringila, Dapto, Darkes Forest, Dombarton, Dunmore, East Corrimal, Fairy Meadow, Farmborough Heights, Fernhill, Figtree, Flinders, Gwynneville, Haywards Bay, Helensburgh, Horsley, Huntley, Jamberoo, Kanahooka, Keiraville, Kembla Grange, Kembla Heights, Kiama, Koonawarra, Lake Heights, Lake Illawarra, Lilyvale, Macquarie Pass, Maddens Plains, Maianbar, Mangerton, Marshall Mount, Minnamurra, Mount Keira, Mount Kembla, Mount Ousley, Mount Pleaseant, Mount Saint Thomas, Mount Warrigal, North Macquarie, North Wollongong, Oak Flats, Otford, Port Kembla, Primbee, Russel Vale, Scarborough, Shell Cove, Shellharbour, Spring Hill, Stanwell Park, Stanwell Tops, Tarrawanna, Thirroul, Towradgi, Tullimbar, Unanderra, Warilla, Warrawong, Waterfall, West Wollongong, Windang, Wollongong, Wombarra, Wongawilli, Woonona, Yallah and Yellow Rock.

SUTHERLAND SHIRE → Alfords Point, Barden Ridge, Bonnet Bay, Burraneer, Caringbah, Caringbah South, Como, Cronulla, Dolans Bay, Engadine, Grays Point, Greenhills Beach, Greenwell Point, Gymea, Gymea Bay, Heathcote, Illawong, Jannali, Kangaroo Point, Kareela, Kirrawee, Lilli Pilli, Loftus, Lucas Heights, Menai, Miranda, Oyster Bay, Port Hacking, Sandy Point, Sutherland, Sylvania, Sylvania Waters, Taren Point, Woolooware, Woronora, Woronora Heights, Yarrawarrah, and Yowie Bay.

SOUTH COAST→ Bamarang, Batemans Bay, Bawley Point, Berry, Broulee, Burrill Lake, Callala Bay, Central Tilba, Culburra, Currarong, Durras, Huskisson, Gerringong, Gerroa, Jaspers Brush, Jervis Bay, Kangeroo Valley, Kioloa, Kings Point, Lake Conjola, Milton, Mogo, Mollymook, Moruya, Narooma, Nelligen, Nowra, Sussex Inlet, Tabourie Lake, Termeil, Tomakin, Tuross Heads, and Ulladulla

Wollongong receives an average of 7.0 peak sun hours per day, making it one of the best locations in NSW for solar energy.

A well-designed solar system is one of the smartest investments a Wollongong homeowner can make, typically paying for itself within 3 to 5 years and delivering significant savings for decades.

Greenswell Electrical is SAA accredited installers, meaning every installation we complete qualifies for the current government incentives. We apply rebates directly as an upfront discount on your quote so there is no paperwork and no waiting.

Our residential solar installations are tailored to each property. We assess your roof, your energy usage, and your goals to recommend the right system size and equipment, from a compact 8 kW solar system for an average home through to 15 kW or larger systems for high-energy households. All installations are carried out by our own team of certified solar installers. 

Every system is custom-designed for your property, installed by our own certified team, and backed by quality warranties and ongoing support. We also offer battery storage to complement your solar system, letting you store excess energy for use at night or during power outages.

For households looking to reduce hot water costs, our heat pump installations deliver significant savings compared to electric and gas alternatives.

Solar Panel Warranty is a guarantee from the manufacturer or installer that your solar panels, inverter, or battery will perform as expected for a certain period, covering defects, performance drops, or failures, giving you peace of mind that your system is protected.

•  Product Warranty: Covers manufacturing or material defects in panels, inverters, or batteries, ensuring the components are free from faults for a specified period.

• Performance Warranty: Guarantees your solar panels maintain a certain energy output over time, typically ensuring at least 80–90% of original efficiency after 30 years.

• Defects Coverage: Protects against failures or malfunctions caused by workmanship or material defects, giving you peace of mind that faulty components will be repaired or replaced.

A home solar battery warranty is a manufacturer’s guarantee that the battery will perform reliably for a set period. It typically includes a product warranty covering defects and a performance warranty ensuring the battery retains a certain capacity over time or number of cycles. Together, these warranties protect consumers against premature failure and performance loss.

• Product and Performance Warranty: The product warranty covers manufacturing defects or material faults, typically lasting 5–10 years. The performance warranty guarantees that the battery will retain a certain percentage of its storage capacity (e.g. 70–80%) after a set period, often 10 years or a specific number of cycles.

• Cycle Counts: A cycle refers to one full charge and discharge of the battery. Manufacturers rate batteries for a certain number of cycles (e.g. 6,000 cycles), indicating how many times the battery can be used before its capacity drops below the performance warranty threshold.

• Defects: Defects include issues such as faulty cells, poor connections, or software/electronic failures that affect battery function. These are generally covered under the product warranty, provided the battery has been installed and used according to the manufacturer’s specifications.

Choosing the right system is about matching your energy needs with the right technology.

Our team at Greenswell Electrical will assess your electricity usage, roof layout, and future plans to recommend a system that maximises savings and long-term performance, ensuring you get the best value for your investment.

Solar can make a real difference to your energy bills. Most of our customers save between $1,000 and $3,000 per year, depending on their electricity usage and system size.

Homes with high daytime consumption can often save even more, and pairing your system with a battery can help maximise these savings.

Savings depend on your household’s energy use and solar system size. Batteries increase self-consumption of your solar energy and reduce reliance on the grid during peak electricity periods, often saving hundreds to over a thousand dollars per year.

The cost of a solar system in Wollongong typically ranges from $8,000 to $20,000 installed, depending on solar system, brand of equipment, height or roof, and installation requirements.

Most households choose a system between 8–15 kW solar system, which covers evening daytime loads and provides extra for battery storage to cover night time loads. 

Government rebates still significantly reduce that upfront cost of solar system installations until 2030.

The cost of a solar battery in Wollongong typically ranges from $10,000 to $20,000 installed, depending on battery capacity, brand, and installation requirements.

Most households choose a system between 15–30 kWh, which covers evening energy use and provides overnight backup. 

Government rebates significantly reduce that upfront cost. Wollongong homeowners currently have access to two stackable incentives:

• Federal Cheaper Home Batteries Program – a discount of approximately 30% on eligible batteries, applied upfront at the point of sale. Available until 2030.

• NSW VPP Incentive – up to $1,500 for connecting your battery to a Virtual Power Plant (VPP) through an approved provider. Eligibility is for batteries under 28kWh.

While north-facing roofs are ideal, Greenswell Electrical can design systems for east- or west-facing roofs that still capture plenty of energy. Our team will tailor the system layout and panel tilt to get the best performance for your home.

You can still save a lot with solar alone, but adding a battery gives you greater control over your energy. Batteries allow you to use more of your own solar power instead of exporting it to the grid, help protect against rising electricity costs, and can provide backup power when you need it most.

Absolutely! We can retrofit a battery to your current solar setup. Our team will assess your system, electricity usage, and future needs to recommend the right battery for your home.

Solar batteries are low-maintenance. At Greenswell Electrical, we provide guidance on system monitoring and ensure your battery is installed in the ideal location to avoid extreme conditions. Minimal upkeep is needed beyond regular performance checks.

Absolutely! Solar panels still generate electricity on cloudy days, although output will be lower than on sunny days. Modern panels are efficient enough to deliver consistent energy year-round, so you can enjoy savings no matter the weather.

A battery backup system gives you reliable power and reduces your reliance on the grid. Whether it’s a blackout or just peak rates, you’re always covered. Plus, it pairs perfectly with solar to maximise your savings and efficiency.

Generally there are 2 options for battery blackout protection;

• Limited Circuit Blackout Protection → Includes 2 Light Circuits and 2 Power Circuits (Essentials Only)

• Whole-Home Blackout Protection → Can cost a few thousand more! (Run everything in a blackout)