What to expect during solar panel installation

Getting solar panels installed involves a lot less on-site work than most people expect, and a lot more waiting on other people.

The actual installation - mounting the racking, fitting the panels, wiring up the inverter - is typically done in 1-3 days for a standard home system.

What takes weeks isn't the physical work, it's everything around it.

This includes things like getting your local network operator to approve the connection, waiting on equipment, and getting a licensed inspection signed off before you're allowed to export power back to the grid.

From the day you sign a quote to the day your system is switched on and exporting, most Australian households are looking at somewhere between 2 and 8 weeks.

However, the exact timeline can vary by state, network area, and how complex your roof or system is.

This guide walks you through each stage in order, what actually happens at each step, where delays tend to creep in and what you can do to keep things moving.

The full timeline at a glance

The process can look a little different depending on where you live.

Your state, local distribution network service provider (DNSP) and retailer can all affect what happens after installation, including whether you need an inspection, when your meter gets updated and when you can start exporting power to the grid.

So, treat the timeframes in the following table as a general guide rather than a guarantee.

What happens on solar panel installation day?

On the day itself, your installation team will usually arrive in the morning and get to work. A standard home system can often be installed in a day, although larger or more complex jobs can take longer.

Broadly, it breaks down into four parts.

• Mounting system: Installers fix racking to your roof, using mounting hardware suited to your roof type and the requirements of the installation.
• Panel placement and alignment: Panels are lifted onto the racking and secured, with careful attention to orientation and spacing so they perform as designed and don't shade each other.
• Inverter installation and wiring: The inverter (which converts the DC electricity your panels produce into the AC electricity your home uses) is mounted, usually on a shaded outside wall or in a garage near your switchboard, and wired to the panels. If you're adding a solar battery, it's usually fitted at this stage too.
• Connection to the switchboard: The system is connected to your home's switchboard, with a circuit breaker and any other required electrical work added as needed. How it's wired depends on whether you've gone with an on-grid or off-grid setup.

By the end of the day, your system is typically physically complete, but it isn't switched on and exporting yet. That only happens once the DNSP has completed the connection and inspection process covered in the next section.

Why does network approval take the longest?

Network approval can take the longest, and a lot of it is out of your installer's hands.

Your DNSP, the company that owns and maintains the poles and wires in your area, not your electricity retailer, has to check that your system can safely connect to the local grid before approving the connection.

Approval timeframes vary a lot by DNSP and system size. Some straightforward small residential systems can be approved pretty quickly, while others can take several weeks, particularly if the application needs extra technical checks or there are constraints on the local grid.

The Australian Government says the connection agreement can take up to 30 business days in some areas.

A few things can cause delays at this stage: incomplete or incorrect information in the application, systems that need extra technical assessment and local grid constraints.

Some of this is outside your installer's control, but they can help make sure everything is correct before the application goes in.

Because approval times depend on your network area, it pays to compare installers who work in your city. You can get solar quotes in Sydney, Melbourne, Brisbane, Adelaide, Canberra and Darwin.

What do I need to prepare before installation day?

There's a handful of practical things worth sorting out before installation day so it goes smoothly.

• Clear roof access. Installers need safe, unobstructed access to your roof, so trim back overhanging branches and clear anything stored near the access point.
• Sort parking and pets. Installation vehicles need somewhere to park, and pets are generally safer kept away from the work area for the day.
• Have your recent electricity bills ready. Installers and your DNSP use these to confirm your connection details and current usage, and having them ready upfront avoids a back-and-forth that can slow the approval stage. If you're not sure which details matter, here's how to read your energy bill.
• Check for council or strata approval. Most standard rooftop solar installs on freestanding homes don't need council approval or a building permit, but heritage-listed properties, some apartment buildings and certain strata schemes may require sign-off before work starts. Check this early, since it can add real time if it's missed.
• Confirm which rebates apply. Check with your installer which solar rebates and incentives your system qualifies for, since the paperwork is usually signed on installation day.

What happens after your solar panels are installed?

Your panels being physically installed isn't necessarily the same as your system being ready to export power to the grid.

You may still need to complete a few steps before you can switch it on, and what happens next varies depending on where you live.

• In some states, an independent inspector must check the installation against electrical safety requirements. For example, Victoria requires an independent inspection, while other states and territories have different post-installation processes.
• Your installer will also need to complete the required electrical safety and commissioning paperwork.
• You may also need your smart meter installed or configured so it can record electricity flowing back to the grid.
• Your DNSP, retailer or installer will coordinate the relevant connection steps, depending on where you live.

Until you get confirmation that your system is ready to be switched on, don't assume you're earning feed-in tariff credits from any excess solar you generate.

Those credits are worked out through net metering, and the rate you get depends on the solar energy plan you're on. Once you start exporting, it's worth checking how electricity tariffs work and whether a time of use or single rate plan suits your household, then comparing cheap energy plans to make sure you're still on a competitive deal.

This also matters for your Small-scale Technology Certificates (STCs), the financial benefit that usually gets passed on to you as an upfront discount on your solar system.

To be eligible, your system needs to meet the relevant requirements and be installed by an accredited solar installer.

So keeping your compliance and installation paperwork is important.

What should you look for when comparing solar installers?

Price is usually the first thing people compare between solar quotes, but how reliable an installer is with timelines matters too.

An installer who's slow with paperwork, takes a while to submit your DNSP application or is juggling lots of jobs at once can add weeks to the process, regardless of how good their panels are.

When you're comparing quotes, ask installers how long their current jobs are taking from signed quote to switch-on, rather than just how long the physical installation takes.

Those two timeframes can be very different.

It's also worth deciding upfront whether you're happy to get quotes online or would rather speak to an installer about your specific roof and timeline.

Before you commit, run the numbers for your own roof with our solar power payback calculator so you know what a realistic payback period looks like.

Frequently asked questions

• Why is my solar installation taking so long?

  The most common cause is the network approval stage, where your distribution network service provider (DNSP) has to check that your local grid can handle your system's export before approving the connection.

  This step is largely outside your installer's control.

  Missing electricity bill information, a complex roof design, or local grid capacity constraints in your area can all add extra time here.

• Do I need council approval to install solar panels?

  Most standard rooftop solar installations on regular freestanding homes don't need council approval.

  However, heritage-listed properties, some apartment buildings, and certain strata-titled properties may need sign-off or a building permit before work starts, so it's worth checking with your council or strata body early if any of these apply to you.

• Can I use my solar panels before the inspection is done?

  You may be able to use solar power generated for your own home's consumption before formal sign-off, but you shouldn't assume you're earning feed-in tariff credits for anything exported to the grid until a licensed inspector has signed off and your meter has been updated with permission to export.

  Check with your installer about what applies to your specific system. It's also worth knowing whether your solar panels work in a power outage, since most grid-connected systems shut down automatically when the grid goes down.

• What should I have ready before installation day?

  Clear, safe access to your roof, sorted parking for the installation team, pets kept away from the work area, and copies of your recent electricity bills on hand are the main practical things worth organising.

  If your property is heritage-listed or on a strata title, confirm any required approvals are already sorted before the day arrives.

Written by

Mariam Gabaji

Senior Utilities Editor & Tech Expert

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Mariam Gabaji is a journalist with 13 years of experience, specialising in consumer topics like mobile services and energy costs. Her work appears in the ABC, Yahoo Finance, 9News, The Guardian, SBS, 7News, A Current Affair and Money Magazine. Mariam holds a Bachelor of Arts in Journalism and was a finalist for the 2024 and 2025 IT Journalism Award for Best Telecommunications Journalist. See full bio

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