Updated November 2026·Independently researched·11 min read
Commercial solar in Central Coast runs $22,000–$33,000
for a 30 kW system installed, after STCs, GST included - other sizes and site works below
On the Central Coast a 30 kW commercial solar system costs $22,000–$33,000 installed after STCs, $27,000 typical. A Somersby manufacturer weighing 100 kW compares that with $70,000–$110,000; a Terrigal cafe at 10 kW compares it with $8,000–$12,000.
-1.4%Commercial Solar costs in Central Coast 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 Central Coast
$27,000
30 kW installed after STCs, Central Coast 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
A Central Coast commercial solar quote begins with kilowatts: $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, all installed after STCs. Per watt the range is $0.70–$1.20, with the wide Somersby and Tuggerah sheds at the low end.
The building then moves the Central Coast number. Tilt frames on a Gosford CBD or Erina 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 a West Gosford or Berkeley Vale unit takes the same panels with a hoist. Older boards in the Mann Street shops in Gosford and the Wyong workshops add a switchboard upgrade at $1,500–$5,000.
Anything over 30 kW may carry network upgrade or connection works at $2,000–$10,000, and commercial panel cleaning once the array is running costs $5–$15 a panel, booked often along the beaches. All prices include GST.
Quick answerCommercial solar in Central Coast 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 Central Coast quotes →
Commercial Solar Prices in Central Coast 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 Central Coast? Get a quote from a local commercial contractor - free, no obligation.
What does a 30 kW commercial solar system cost in Central Coast?$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 Central Coast 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 — Central Coast
Three Central Coast jobs priced from the rows above: a Somersby manufacturer, an Erina office building and a Mangrove Mountain orchard. Each line names its row; the quote you get prices your own roof, board and connection.
Somersby manufacturer. A food manufacturer at Somersby fits 100 kW to a long factory roof 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.
Erina office building. The owner of a three-storey Erina office 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 are fixed, and the base-building switchboard is upgraded at $1,500–$5,000 to accept the inverter.
Mangrove Mountain orchard upkeep. A citrus grower at Mangrove Mountain runs a 20 kW array installed at $15,000–$26,000 over the packing shed and books commercial panel cleaning at $5–$15 a panel after harvest, when orchard dust and pollen have settled on the glass.
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Central Coast commercial solar reaches from the industrial estates at Somersby, West Gosford and Tuggerah, through Berkeley Vale, Warnervale and Charmhaven, to Gosford CBD and Erina offices, retail in Terrigal, The Entrance and Avoca, the Erina Fair precinct, and the orchards, nurseries and turf farms of Mangrove Mountain, Kulnura and the Yarramalong Valley.
Somersby and Tuggerah 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.
West Gosford, Berkeley Vale and Warnervale 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.
Gosford CBD and Erina 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.
Terrigal, The Entrance and Avoca retail - A cafe, bar or surf shop fits a 10 kW system at $8,000–$12,000; the older Mann Street and Wyong shopfronts are where a switchboard upgrade at $1,500–$5,000 joins the quote, and the beaches call for marine-grade clamps.
Mangrove Mountain and Yarramalong growers - Packing sheds, nurseries 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 after harvest.
What a Compliant Commercial Solar Quote Includes — Cost in Central Coast
Before comparing Central Coast 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 on the Central Coast: Somersby sheds, Erina offices and plateau farms
A Central Coast small business starts at $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 are what take the installed cost per watt to the floor of $0.70–$1.20.
The roof then writes the rest of a Central Coast quote. New sheds at Somersby and Tuggerah have clean metal decks and modern three-phase boards, so the quote stays close to the system price. Gosford CBD and Erina 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. The older Mann Street shopfronts and the Wyong and Woy Woy workshops are where a switchboard upgrade at $1,500–$5,000 most often appears.
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 Central Coast quote look for the STC line on its own, the name of whoever 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 priced per visit.
Commercial solar cost by system size in Central Coast
Quick answerCentral Coast pricing steps by kilowatts: a Terrigal cafe or The Entrance shop sits in the $8,000–$12,000 10 kW bracket, a Berkeley Vale workshop or Kulnura packing shed at 20 kW to 30 kW pays $15,000–$26,000 to $22,000–$33,000, and a Somersby or Tuggerah shed at 50 kW to 100 kW pays $35,000–$55,000 to $70,000–$110,000.
A larger Central Coast array lowers the per-watt figure, $0.70–$1.20 across the range with the 100 kW Somersby sheds at the bottom. Fixed items do not scale: a structural engineering report at $800–$2,000 costs much the same at 20 kW or 50 kW, and a switchboard upgrade at $1,500–$5,000 depends on the board's age rather than the array.
Access and salt are the other levers on a Central Coast job of any size. Gosford and Erina offices need crane or cherry picker hire at $1,000–$3,000 a day plus dock and lift slots; every beachside site from Umina to The Entrance needs fixings rated for salt air. 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 Central Coast
What is the price of commercial solar in Central Coast?
From our Central Coast 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 Central Coast?
A 30 kW commercial solar system in Central Coast costs $22,000–$33,000 installed after STCs, with $27,000 typical. An Erina 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 Mangrove Mountain packing shed on a metal roof usually needs neither.
What does a 100 kW commercial solar system cost in Central Coast?
Going by our Central Coast table, expect $70,000–$110,000 for a 100 kW commercial system installed after STCs; the typical price is $88,000. Somersby, West Gosford and Tuggerah sheds are the usual Central Coast 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 Central Coast?
$0.70–$1.20 per watt installed after STCs on our Central Coast 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 Central Coast 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 the older Mann Street shopfronts of Gosford and the Wyong and Woy Woy workshops. 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 Central Coast need a structural engineering report?
A structural engineering report costs $800–$2,000 on our Central Coast table, typically $1,200. Owners of Gosford CBD and Erina office buildings usually ask for one before tilt frames go onto a concrete roof; a single-storey metal unit at Berkeley Vale rarely needs it.
What does commercial solar panel cleaning cost in Central Coast?
Commercial panel cleaning in Central Coast costs $5–$15 a panel, with $10 a panel typical. Beachside sites from Umina to The Entrance, and Mangrove Mountain growers after harvest, book it more often; have the quote price it per visit.
Do Central Coast 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 Central Coast quote and check the panel and inverter models against the listed products.
Related Commercial Solar Cost Guides — Central Coast