Updated November 2026·Independently researched·11 min read
Commercial solar in Wollongong runs $22,000–$33,000
for a 30 kW system installed, after STCs, GST included - other sizes and site works below
A Wollongong business pays $22,000–$33,000 for a 30 kW commercial solar system installed after STCs, with $27,000 typical. An Unanderra manufacturer sizing up to 100 kW looks at $70,000–$110,000; a Crown Street cafe at 10 kW looks at $8,000–$12,000.
-1.4%Commercial Solar costs in Wollongong are down around 1.4% over the past year, re-verified against 90+ sources in November 2026.Year on year
Typical 30 kW commercial system in Wollongong
$27,000
30 kW installed after STCs, Wollongong 2026, GST included
30 kW commercial system
$22,000-$33,000
50 kW commercial system
$35,000-$55,000
100 kW commercial system
$70,000-$110,000
$22,000$27,000$33,000
Wollongong commercial solar is sold by system size: $8,000–$12,000 for a 10 kW system on a small shop or office, $15,000–$26,000 for 20 kW, $22,000–$33,000 for 30 kW, $35,000–$55,000 for 50 kW and $70,000–$110,000 for 100 kW, installed after STCs. Per watt that is $0.70–$1.20, and the long sheds at Kembla Grange and Albion Park Rail sit at the cheap end.
The site then shapes a Wollongong quote. Tilt frames on a Crown Street or Innovation Campus office roof need a structural engineering report at $800–$2,000, crane or cherry picker hire at $1,000–$3,000 a day and a dock booking; a Colorbond roof on an Unanderra or Fairy Meadow unit takes the same panels with a hoist. Older boards in Port Kembla workshops and the Thirroul and Crown Street shopfronts add a switchboard upgrade at $1,500–$5,000.
Over 30 kW, network upgrade or connection works at $2,000–$10,000 may be added, and commercial panel cleaning once the system is running costs $5–$15 a panel, booked often along the escarpment coast. Prices include GST.
Quick answerCommercial solar in Wollongong runs $22,000–$33,000 for a 30 kW system in 2026, with roof type, switchboard condition and network connection works setting the total. All figures on this page include GST. Get free Wollongong quotes →
Commercial Solar Prices in Wollongong 2026: Cost Table and Price List
Service
Low
Typical
High
10 kW commercial system (small shop / office)
$8,000installed
$10,000
$12,000
20 kW commercial system
$15,000installed
$20,000
$26,000
30 kW commercial system
$22,000installed
$27,000
$33,000
50 kW commercial system
$35,000installed
$44,000
$55,000
100 kW commercial system
$70,000installed
$88,000
$110,000
Installed cost per watt, commercial (after STCs)
$0.70per W
$0.90
$1.20
Structural engineering report
$800report
$1,200
$2,000
Switchboard upgrade for a commercial system
$1,500per job
$3,000
$5,000
Network upgrade / connection works (systems over 30 kW)
$2,000per job
$5,000
$10,000
Crane or cherry picker hire
$1,000per day
$2,000
$3,000
Commercial panel cleaning
$5per panel
$10
$15
Scoping commercial solar work in Wollongong? Get a quote from a local commercial contractor - free, no obligation.
Prices include GST. Wollongong and the Illawarra, November 2026.
What does a 30 kW commercial solar system cost in Wollongong?$22,000–$33,000 installed after STCs, $27,000 typical. The next sizes: $35,000–$55,000 for 50 kW and $70,000–$110,000 for 100 kW.
What site works get added to a Wollongong commercial solar quote?A structural engineering report at $800–$2,000, a switchboard upgrade at $1,500–$5,000 where the board is old, network upgrade or connection works at $2,000–$10,000 on systems over 30 kW, and crane or cherry picker hire at $1,000–$3,000 a day for tower and tilt-frame roofs.
Worked Commercial Solar Cost Scenarios — Wollongong
Three Wollongong examples priced from this page's rows: a Kembla Grange distribution shed, a Wollongong CBD office and a Jamberoo dairy. Each line names the row it draws on; the quote you receive prices your own roof and board.
Kembla Grange distribution shed. A wholesaler at Kembla Grange fits 100 kW to a long north-facing shed at $70,000–$110,000, with $88,000 typical. Over 30 kW, network upgrade or connection works are quoted on their own line at $2,000–$10,000, and a crane at $1,000–$3,000 a day lands the panel pallets.
Wollongong CBD office. The owner of a four-storey office off Crown Street installs 30 kW on tilt frames at $22,000–$33,000. The concrete roof gets a structural engineering report at $800–$2,000 before the frames go on, and the main switchboard is upgraded at $1,500–$5,000 to take the inverter.
Jamberoo dairy upkeep. A dairy at Jamberoo runs a 20 kW array installed at $15,000–$26,000 over the milking shed and books commercial panel cleaning at $5–$15 a panel twice a year, because sea mist off the escarpment and dust from the yards both settle on the glass.
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Prices include GST. Wollongong and the Illawarra, November 2026.
Commercial Solar Costs by Sector in Wollongong
Wollongong commercial solar runs from the industrial estates at Unanderra, Kembla Grange and Albion Park Rail, through the Port Kembla and Shellharbour precincts, to CBD offices on Crown Street and the Innovation Campus at North Wollongong, retail in Thirroul, Fairy Meadow and Kiama, and the dairies and farms of Jamberoo, Berry and the Macquarie Pass foothills.
Unanderra, Kembla Grange and Albion Park Rail sheds - Manufacturing and distribution roofs take 100 kW arrays at $70,000–$110,000, the size at which the installed cost per watt sits nearest the $0.70 floor of $0.70–$1.20.
Port Kembla and Shellharbour units - Workshops and trade units buy 30 kW to 50 kW at $22,000–$33,000 to $35,000–$55,000; over 30 kW they carry network upgrade or connection works at $2,000–$10,000.
Crown Street and Innovation Campus offices - Tilt frames over concrete need a structural engineering report at $800–$2,000 and crane or cherry picker hire at $1,000–$3,000 a day, on top of a 20 kW or 30 kW system at $15,000–$26,000 or $22,000–$33,000.
Thirroul, Fairy Meadow and Kiama retail - A cafe, bar or surf shop fits a 10 kW system at $8,000–$12,000; the older Crown Street and Thirroul shopfronts are where a switchboard upgrade at $1,500–$5,000 joins the quote, and the coast calls for marine-grade clamps.
Jamberoo and Berry farms - Dairies, packing sheds and coolrooms run 30 kW to 50 kW at $22,000–$33,000 to $35,000–$55,000, with commercial panel cleaning at $5–$15 a panel booked against sea mist and yard dust.
What a Compliant Commercial Solar Quote Includes — Cost in Wollongong
Before comparing Wollongong quotes, check each one prices the same kilowatts and the same panel and inverter brands, states how the installer gets panels and people onto the roof, and shows site works, certificates and GST on their own lines.
System size in kW, panel count, panel and inverter make and model, and whether the inverter is single or three phase
The STC assignment shown as a separate line, so the installed price after STCs and the price before it are both visible
A structural engineering report, priced at $800–$2,000, listed as included or excluded
Switchboard upgrade work, at $1,500–$5,000 where needed, shown as its own line
For systems over 30 kW, network upgrade or connection works at $2,000–$10,000 and who lodges the network application
Crane or cherry picker hire at $1,000–$3,000 a day, and any lift, dock or after-hours access charges for towers
Commercial panel cleaning at $5–$15 a panel if a maintenance visit is bundled, priced per visit
Install, site works and any monitoring or maintenance each on its own line, on a single GST basis
The installer's accreditation number and proof of insurance
Commercial solar cost in Wollongong: Unanderra sheds, Crown Street offices and Illawarra farms
For a Wollongong small business the entry point is $8,000–$12,000 for a 10 kW system installed after STCs (typically $10,000), then $15,000–$26,000 for 20 kW and $22,000–$33,000 for 30 kW. Manufacturers and distributors buy 50 kW at $35,000–$55,000 and 100 kW at $70,000–$110,000, and those arrays take the installed cost per watt to the floor of $0.70–$1.20.
The roof writes the rest of a Wollongong quote. New sheds at Kembla Grange and Albion Park Rail have clean metal decks and modern three-phase boards, so the quote stays close to the system price. Crown Street and Innovation Campus offices put panels on tilt frames over concrete, bringing a structural engineering report at $800–$2,000, crane or cherry picker hire at $1,000–$3,000 a day and a dock booking. Port Kembla's old workshops and the heritage shopfronts of Thirroul and lower Crown Street are where a switchboard upgrade at $1,500–$5,000 is most often needed.
The Clean Energy Regulator says eligibility for solar PV systems under the Small-scale Renewable Energy Scheme has been expanded from 100 kW to 1 MW for eligible systems installed from 1 October 2026, with a fixed 5-year deeming period for 100 kW to 1 MW systems, and that STC applications for those mid-scale systems will not open until mid to late November 2026. Existing arrangements for systems smaller than 100 kW are not affected. On a Wollongong quote check that the STC line stands on its own, the installer names who lodges the network application on a system over 30 kW, where $2,000–$10,000 of connection works can apply, and commercial panel cleaning at $5–$15 a panel is priced per visit.
Commercial solar cost by system size in Wollongong
Quick answerWollongong pricing steps by kilowatts: a Crown Street cafe or Thirroul shop sits in the $8,000–$12,000 10 kW bracket, a Fairy Meadow workshop or Jamberoo dairy at 20 kW to 30 kW pays $15,000–$26,000 to $22,000–$33,000, and an Unanderra or Kembla Grange shed at 50 kW to 100 kW pays $35,000–$55,000 to $70,000–$110,000.
More panels on a Wollongong roof mean a lower per-watt price, $0.70–$1.20 across the range with the 100 kW Kembla Grange sheds at the bottom. Fixed items stay put: a structural engineering report at $800–$2,000 costs about the same at 20 kW or 50 kW, and a switchboard upgrade at $1,500–$5,000 turns on the board's age, not the array's size.
Access and salt are the other variables on a Wollongong job of any size. CBD offices need crane or cherry picker hire at $1,000–$3,000 a day plus dock and lift slots; every coastal site from Thirroul to Kiama needs fixings rated for salt air and the southerly. Over 30 kW the network upgrade or connection works line at $2,000–$10,000 appears, and commercial panel cleaning at $5–$15 a panel is the running cost at every size.
Frequently Asked Questions — Commercial Solar Cost in Wollongong
What is the price of commercial solar in Wollongong?
From our Wollongong table: $8,000–$12,000 for a 10 kW commercial system (typically $10,000); $22,000–$33,000 for a 30 kW system (typically $27,000); $70,000–$110,000 for a 100 kW system (typically $88,000), all installed after STCs.
How much does a 30 kW commercial solar system cost in Wollongong?
A 30 kW commercial solar system in Wollongong costs $22,000–$33,000 installed after STCs, with $27,000 typical. A Crown Street tenancy on an office roof adds a structural engineering report at $800–$2,000 and crane or cherry picker hire at $1,000–$3,000 a day; a Berry packing shed on a metal roof usually needs neither.
What does a 100 kW commercial solar system cost in Wollongong?
Going by our Wollongong table, expect $70,000–$110,000 for a 100 kW commercial system installed after STCs; the typical price is $88,000. Unanderra, Kembla Grange and Albion Park Rail sheds are the usual Wollongong buyers, and network upgrade or connection works at $2,000–$10,000 are priced on top because the system is over 30 kW.
What is the installed cost per watt for commercial solar in Wollongong?
$0.70–$1.20 per watt installed after STCs on our Wollongong table, with $0.90 typical. The larger the array the lower the figure: a 100 kW system at $70,000–$110,000 sits near the floor, a 10 kW system at $8,000–$12,000 near the top.
Does a Wollongong business need a switchboard or network upgrade for solar?
Often one or both. A switchboard upgrade for a commercial system costs $1,500–$5,000 and is common in Port Kembla's old workshops and the heritage shopfronts of Thirroul and lower Crown Street. Network upgrade or connection works at $2,000–$10,000 apply to systems over 30 kW, so ask the installer to show the line and name who lodges the network application.
What changed for commercial solar systems over 100 kW?
The Clean Energy Regulator says the Renewable Energy (Electricity) Regulations 2001 have been amended to expand eligibility for solar PV systems under the Small-scale Renewable Energy Scheme from 100 kW to 1 MW, applying to eligible mid-scale systems installed from 1 October 2026, with a fixed 5-year deeming period; STC applications for mid-scale systems will not open until mid to late November 2026. Existing arrangements for systems smaller than 100 kW are not affected.
Does a commercial solar install in Wollongong need a structural engineering report?
A structural engineering report costs $800–$2,000 on our Wollongong table, typically $1,200. Owners of Crown Street and Innovation Campus office buildings usually ask for one before tilt frames go onto a concrete roof; a single-storey metal unit at Unanderra rarely needs it.
What does commercial solar panel cleaning cost in Wollongong?
Commercial panel cleaning in Wollongong costs $5–$15 a panel, with $10 a panel typical. Coastal sites from Thirroul to Kiama, and Jamberoo dairies, book it more often because of sea mist and yard dust; have the quote price it per visit.
Do Wollongong commercial solar installers need accreditation?
For mid-scale systems of 100 kW to 1 MW, the Clean Energy Regulator says the system must have its panels, batteries or inverters listed on the Clean Energy Council list of approved components and meet Solar Accreditation Australia install guidelines. Ask for the accreditation number on your Wollongong quote and check the panel and inverter models against the listed products.