Solar panel installation in Traralgon

A first solar system on a Traralgon house is usually somewhere between 5 and 10 kW, and the right size comes from your power bills and your plans, not from how many panels fit on the roof. Before anything is bolted down, you need a written quote you have accepted, network pre-approval from AusNet Services and, if you want the Solar Victoria rebate, an approved eligibility check. The site passes your enquiry to an independent local solar business, and that business designs, quotes and installs the system under its own licence; the about page explains how the referral works.

How do I work out what size solar system my home needs?

Pull out the last four power bills, or better, a full year of them. The useful number is how much electricity the household uses while the sun is up, because that is the power solar replaces at full value. Power sent back to the grid earns only the feed-in rate your retailer chooses to pay, since Victoria no longer sets a minimum.

Factors that justify a bigger system:

• Someone is home through the day, such as a shift worker, a retiree or a home office.
• You plan to swap a gas heater, gas cooktop or gas hot water service for electric appliances in the next few years.
• An electric car will be charged at home.
• A battery is likely to be added later and will need daytime surplus to charge.

Factors that keep the system smaller:

• The usable roof area is small, split across several faces, or shaded for part of the day.
• Most of your use is in the evening and you have no plan for a battery.
• The export your connection is allowed to send to the grid is low.

There is a network detail that catches people out. AusNet assesses a home connection on the combined rating of the inverters (the solar inverter plus any battery inverter), not on the total wattage of the panels. AusNet’s guide to connections up to 30 kW sets out the rule, and the site’s AusNet export limits guide explains what the limits mean for a typical Traralgon address. If a battery is on the horizon, ask the installer to size the inverter with it in mind now, so you are not up against the network limit later.

What does a first solar system cost?

The bands below are Melbourne averages from the Solar Choice Price Index for 1 October 2026. They cover standard and premium offers, fully installed, after the STC discount from the federal Small-scale Renewable Energy Scheme and including GST. They are a reference point only, not a quote for a Traralgon roof.

System size	Melbourne VIC average, fully installed	Who it usually suits
5 kW	$5,140 to $5,970 per system	Smaller households with modest daytime use
6 kW	$5,810 to $6,730 per system	A common starting size for a family home
7 kW	$6,490 to $7,570 per system	Households with steady daytime use or a battery planned
10 kW	$8,920 to $10,410 per system	Larger homes, or homes moving off gas

Solar Choice says premium offers run about 20 to 30% above standard ones, and it updates the index monthly from figures supplied by more than 200 installers (Solar Choice price index). A Traralgon quote can land above or below these numbers depending on travel, roof type, the switchboard, the brands chosen and how many levels the house has. The full set of bands, and what moves them, sits on the Traralgon solar and battery cost guide.

A Solar Victoria rebate, where you qualify, comes off after the STC discount and is paid to the retailer. Who qualifies and how the optional loan works are covered on the Traralgon rebates page.

What has to happen before the panels go up?

The order matters, because doing a step early can cost you the rebate or leave the system unable to connect.

1. Written quote. It should name the panel and inverter brands and models, the system size, the inverter location, any switchboard work and what is excluded.
2. AusNet pre-approval. The retailer or installer applies through AusNet’s portal. Pre-approval must be in place before installation, and it comes with a generation limit and an export limit for your address.
3. Solar Homes eligibility, if you are claiming. You upload proof of identity, income and ownership, then receive a QR code. The installer scans it before starting work. Solar Victoria is clear that installing before eligibility is approved means no rebate.
4. Installation. Frames, panels, cabling, isolators, the inverter and the connection to the switchboard.
5. Inspection. Solar is prescribed electrical work in Victoria, so a Licensed Electrical Inspector who is independent of the installer checks it.
6. Certificate and meter. You receive your copy of the Certificate of Electrical Safety, and the meter is reconfigured so exports are recorded.

Each of those steps has its own paperwork, and the site’s solar quote checklist runs through what to look for at each one. If you have a roof plan or rough idea of the panel layout already, include it when you send a first solar system enquiry, as it shortens the back and forth.

Who is allowed to design and install solar in Victoria?

The Clean Energy Regulator sets the bar for systems that create STCs. The designer and installer must hold Solar Accreditation Australia accreditation, the installer also needs an unrestricted electrical licence in the state, and the panels and inverter must be on the Clean Energy Council’s approved product lists (CER rooftop solar requirements). SAA accredits individual people, which is why it is worth asking for the name of the person who will be on your roof.

State law adds its own layer: the Electricity Safety Act 1998 governs electrical work here, with the detail set out in the general regulations made under that Act. The array wiring follows AS/NZS 5033, the inverter must meet AS/NZS 4777.2, and the whole installation sits under the wiring rules in AS/NZS 3000. Energy Safe Victoria’s certificate page for consumers explains the certificate you should end up holding.

What should I ask about an older Valley roof?

Plenty of Latrobe Valley houses have roofs that have already done a few decades of service. Panels and frames are expected to stay put for a long time, so the roof underneath them deserves a hard look before the quote is signed. These are fair questions to put to any installer who inspects it:

• Is the roof sound enough to carry frames for the life of the panels, or should repairs or replacement come first?
• On a tiled roof, how many brittle or cracked tiles are likely to break during the job, and who supplies and fits replacements?
• On a metal roof, are the sheets and fixings in good enough condition to take new penetrations, and how will those penetrations be sealed?
• Which roof faces will carry panels, and what output do you expect from an east and west split compared with a north face?
• What shades the roof through the year: trees, a neighbour’s second storey, a chimney, an aerial?
• Can the existing switchboard and meter box take the solar connection, or does it need work first?

An honest installer will tell you if the roof is the wrong place to start. Replacing a roof after the panels are on means paying for removal and refitting, so it is cheaper to sort the roof out first.

What will a careful installer refuse to do?

A business that does the job properly will not skip these, whatever the deadline:

• Start work before AusNet pre-approval is issued.
• Begin a rebated job before the QR code has been scanned on site.
• Fit inverters with a combined rating above what the network has approved for your address.
• Mount panels on a roof it thinks is failing without telling you in writing.
• Switch the system on and leave without the inspection being arranged and your certificate on its way.

If a salesperson pushes for a start date ahead of any of these, treat it as a reason to get another quote.

How does Traralgon change the plan?

Valley households sit on AusNet’s network, so the approval and export rules above apply in Traralgon, Morwell, Moe and the towns around them. Output from any Victorian roof falls away in winter, and a system sized only from a summer bill can look generous in January and short in July, so base the size on twelve months of use where you can. The Traralgon area page covers the local conditions that affect sizing in more detail.

Next step: what to send for a first solar quote

To get a provider looking at your home, request a solar panel installation quote and include:

• A recent power bill, ideally showing twelve months of usage.
• Photos of each roof face taken from the ground or the street, plus any trees close to the house.
• A photo of the meter box and switchboard with the door open.
• Your suburb, and whether the roof is tile or metal.
• Any plans for a battery, an electric car or replacing gas appliances.

Send a job enquiry