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Solar panels in Wollongong

Wollongong sits on a narrow strip between the escarpment and the Pacific, and that geography shapes solar here more than anything else. The northern suburbs from Thirroul down to Corrimal get long, clear mornings but lose the sun early where the escarpment rises behind them, while Dapto, Horsley, Albion Park and Shell Cove sit on the flatter ground of the Illawarra plain and see the sun until it drops behind the range. The numbers on this page come from the Clean Energy Regulator's postcode data for the Illawarra, from Helensburgh in the north to Dapto and Shellharbour in the south.

Clean Energy Regulator small-scale installation data across 16 postcodes in the Illawarra, to October 2026. Averages include some business systems.

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Where the installs are going

The people putting solar on in Wollongong right now are a mix. The big growth is in the new estates around Calderwood, Tullimbar and Shell Cove, where houses go up with three-phase supply and roofs designed for panels. The steadier stream is the older brick and fibro homes of Fairy Meadow, Figtree and Warilla, where an ageing roof and a rising bill tend to arrive together.

Roofs and homes in Wollongong

Salt is the local problem. Anything within a couple of kilometres of the beach, which is most of the city, lives in a corrosive environment, so ask your installer for panels and mounting hardware rated for coastal conditions, and for stainless fasteners rather than zinc plated. Many of the older homes have terracotta tile roofs that need tile-hook mounting done carefully to avoid cracks, and some of the escarpment-side houses have enough afternoon shade that a north-facing array is the only sensible layout. On the plain, north and west arrays both work.

Brick house with solar panels on its roof, on a suburban street

The network: Endeavour Energy

Endeavour Energy runs the poles and wires across the whole Illawarra. Single-phase homes are generally limited to a 5 kW export, and larger systems need a pre-approval that a good installer handles as part of the job. Three-phase homes, common in the newer estates, can go bigger. Wollongong's mild coastal climate means summer air conditioning loads are lower than in western Sydney, so a battery here is more about evening usage and the feed-in rate than about surviving heatwaves.

Suburban street with power poles and overhead lines at sunset

What a system generates in Wollongong

Wollongong averages 4.5 peak sun hours a day and sits in STC Zone 3. A peak sun hour is an hour of sunlight at full strength, so the figure is what a panel collects once the weaker morning and evening light is added up. On that average, this is what the two most common system sizes produce on a north-facing roof with no shade.

Average daily and yearly solar generation in Wollongong
SystemAverage dayYear
6.6 kW25.2 kWh9,214 kWh
10 kW38.3 kWh13,961 kWh

Worked as system size times 4.5 peak sun hours times 85%, the allowance our suburb pages make for inverter, heat and wiring losses, over 365 average days. Summer days produce well above the average and winter days well below it, and an east or west-facing array produces less than a north-facing one.

Across the eight capitals, the same 6.6 kW system makes from about 7,576 kWh a year in Hobart to about 11,262 kWh in Darwin. In Wollongong it makes about the same as it would in Sydney. More sun means more output from the same panels, but it does not change the STC rebate within a zone: that is set by the zone, the system size and the year you install.

Rebates and feed-in tariffs in Wollongong

Federal
Up to $8,000+ in solar and battery rebates in STC Zone 3. See how we calculate this.
New South Wales
VPP incentives under the Peak Demand Reduction Scheme, plus a $15,000 interest-free Home Energy Saver loan. No upfront battery discount.
Feed-in tariff
The best single-rate plan we can find for 2500 pays 12.0c per kWh (Origin Energy). Compare NSW feed-in tariffs.

How much solar panels cost in Wollongong

These are the installed prices our solar panel cost guide works on, with the federal STC rebate for Wollongong taken off. The rebate comes off the quote at the point of sale, so the last column is what you actually pay. In STC Zone 3 it is worth $1,710 on a 6.6 kW system and $2,622 on a 10 kW one.

  • 5 kW

    Installed price
    $4,500 to $6,500
    STC rebate, Zone 3
    $1,292
    You pay after the STC
    $3,208 to $5,208

  • 6.6 kW

    Installed price
    $5,500 to $8,000
    STC rebate, Zone 3
    $1,710
    You pay after the STC
    $3,790 to $6,290

  • 10 kW

    Installed price
    $8,000 to $12,000
    STC rebate, Zone 3
    $2,622
    You pay after the STC
    $5,378 to $9,378

  • 13 kW

    Installed price
    $10,000 to $15,000
    STC rebate, Zone 3
    $3,382
    You pay after the STC
    $6,618 to $11,618

Prices are the national ranges from our solar panel cost guide. Installed prices are before any rebate. The STC rebate is the certificates each system creates in Zone 3 over the 2026 deeming period of 5 years, at $38 a certificate. The deeming period shortens by a year every 1 January, so the same system earns less rebate each year you wait.

The average system installed across Wollongong in the 12 months to October 2026 was 9.5 kW, between the 6.6 kW and 10 kW rows, although that average includes some business systems. Size yours on your own bills and roof, but it is a fair check on what your neighbours are putting up.

What moves a quote up or down: the panel and inverter brands, a second storey or a steep or tiled roof, and switchboard or meter work. The full breakdown is in our solar panel cost guide.

Payback in Wollongong

Payback is the after-rebate price divided by what the system saves each year. The saving comes from two places: the power you use yourself, which you no longer buy at around 32.0c per kWh, and the power you export, which earns the feed-in tariff.

  • 6.6 kW

    Yearly generation
    9,214 kWh
    Yearly saving
    $1,659
    You pay after the STC
    $3,790 to $6,290
    Simple payback
    2.3 to 3.8 years

  • 10 kW

    Yearly generation
    13,961 kWh
    Yearly saving
    $2,513
    You pay after the STC
    $5,378 to $9,378
    Simple payback
    2.1 to 3.7 years

Assumes 30% of the solar is used in the home at 32.0c per kWh, the average residential usage rate we hold for New South Wales, and the other 70% is exported at 12.0c per kWh, the best single-rate feed-in tariff we can find for postcode 2500 (Origin Energy). That 30% is the share our suburb pages and calculators assume for a household out at work during the day. No battery, no price rises and no panel ageing are counted.

Using more of it yourself improves the numbers quickly, because a kWh used at home is worth 32.0c and an exported one 12.0c. At 50% self-consumption, which a household home through the day or one that runs the pool pump, dishwasher and hot water on a timer can reach, the 6.6 kW system saves about $2,027 a year in Wollongong and pays back in 1.9 to 3.1 years.

Your rebate in Wollongong

Up to $8,000+ in solar and battery rebates. One Why Solar Approved installer, one free written quote, and fifteen minutes with a solar expert before you sign.

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Batteries in Wollongong

The federal Cheaper Home Batteries rebate applies in Wollongong as it does everywhere. It is paid on usable capacity, at $258/kWh for the first 14 kWh and at lower rates above that, and like the STC rebate it comes off the price at the point of sale. It steps down on 1 January 2027, when the full rate falls to $217/kWh.

Battery rebates in Wollongong
Battery (usable)Federal rebate
10 kWh$2,584
14 kWh$3,610

The table is the federal rebate only: there is no NSW battery rebate that a typical household can count on.

New South Wales: VPP incentives under the Peak Demand Reduction Scheme, plus a $15,000 interest-free Home Energy Saver loan. No upfront battery discount.

Whether a battery pays in Wollongong comes down to the gap between what you pay for power and what you are paid for exporting it. Each kWh a battery moves from export into your evening is worth about 20.0c (32.0c less 12.0c). A 10 kWh battery that filled and emptied every day would be worth up to $730 a year on that gap alone; most do less in winter, when there is less surplus to store.

Battery prices by size, before and after the federal rebate, are in our battery cost guide, and the NSW battery rebate page has the state detail.

Installers in Wollongong

We have not published an installer guide for Wollongong yet. Our national installer directory lists SAA-accredited installers with customer reviews.

When you check your rebate with us, you are matched with one Why Solar Approved installer in Wollongong. An installer has passed all six of our checks: credentials, staying power, proof of work, who actually turns up to do the job, what goes in, and how they handle trouble. They earn it before they see a single homeowner, and they lose it if they let one down. The installer never cold-calls you; the one call is from a solar expert, fifteen minutes before you sign.

Installer in hi-vis and a safety harness fitting solar panels to a tin roof

What's actually happening on roofs near you

Wollongong is 16 postcodes. Check yours, or any other.

What Wollongong homeowners ask us

The question we hear most from Wollongong is whether the escarpment shade makes solar pointless. It does not, but it changes the design: a system in Mount Keira or Mount Pleasant should be sized on the morning sun it actually gets, not on a calculator that assumes a flat horizon. The second question is about the steelworks and industrial air, which is far less of an issue for panels than salt. Ask for a shade analysis, ask what the export limit on your street is, and check the installer has done coastal work before. Every installer in our network has been checked for exactly those things.

Questions people ask

How many homes in Wollongong installed solar in the last 12 months?
2,870 small-scale solar systems were installed across Wollongong's 16 postcodes in the 12 months to October 2026, averaging 9.5 kW. The figures are the Clean Energy Regulator's postcode data, not estimates.
What solar rebates apply in Wollongong?
Up to $8,000+ in solar and battery rebates apply in Wollongong, calculated from STC Zone 3 and the federal battery rebate. New South Wales: VPP incentives under the Peak Demand Reduction Scheme, plus a $15,000 interest-free Home Energy Saver loan. No upfront battery discount.
What is the best feed-in tariff in Wollongong?
The best single-rate feed-in tariff we can find for 2500 is 12.0c per kWh with Origin Energy. Rates change often; compare plans once your system is in.
How much does it cost to install solar panels in Wollongong?
A 6.6 kW system in Wollongong costs about $5,500 to $8,000 installed. The federal STC rebate in Zone 3 takes $1,710 off, so you pay about $3,790 to $6,290. A 10 kW system is $8,000 to $12,000 before the rebate and $5,378 to $9,378 after it. Prices move with the panels, the inverter, the roof and any switchboard work.
Is it worth getting solar in Wollongong?
For most owner-occupiers with a roof that gets sun, yes. A 6.6 kW system in Wollongong makes about 9,214 kWh a year from 4.5 peak sun hours a day. Using 30% of that at home and exporting the rest saves about $1,659 a year at today's rates, which pays back the after-rebate price in 2.3 to 3.8 years. It pays back faster if you use more of the power during the day, and more slowly on a shaded roof or a small bill.
Who is the best solar installer in Wollongong?
There is no single best installer for every home. Look for SAA accreditation, a written workmanship warranty and a company that has traded under the same ABN for years; our national installer directory lists accredited installers with reviews. If you check your rebate with us, you are matched with one Why Solar Approved installer in Wollongong who has passed all six of our checks.
What is the 20% rule for solar?
It is the rule of thumb that the panels should be rated 20 to 33 per cent above the inverter, such as 6.6 kW of panels on a 5 kW inverter. Panels rarely produce their full rating, so a slightly larger array keeps the inverter working near its capacity for more of the day. The Clean Energy Council's design guidelines, which the STC rules follow, allow panels up to a third larger than the inverter. That is why 6.6 kW is the standard size on a 5 kW inverter, and why 13.3 kW is the largest array on a 10 kW single-phase inverter.

Suburbs in the Wollongong figures

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Your rebate, one Why Solar Approved installer in Wollongong, and a solar expert on the phone before you sign.

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Up to $8,000+ in solar and battery rebates · Federal rebates step down in 80 daysSee how we calculate this