How Much Does Solar Cost in Melbourne in 2026? Full Price Breakdown

Solar pricing in Melbourne in 2026 sits in a tighter band than it did three years ago. Component costs have settled, the Solar Victoria rebate is stable at $1,400, and federal STCs are on a known reduction schedule. We quote 30-40 systems a month across inner-east suburbs like Toorak, Hawthorn and Balwyn and the prices below are what real installs are landing at, not industry averages or door-knocker quotes.

System sizing chart - what each size costs installed

Sizing is driven by your roof space, your daytime usage pattern, and whether you're adding a battery or EV later. Bigger is almost always better value per kilowatt because the labour, scaffolding, and electrical work are largely fixed costs. Here's what each common size is costing in Melbourne in 2026 with quality components (Tier-1 panels, Fronius or Sungrow inverter, full install with monitoring).

6.6kW - the entry point

Around 16-18 panels. Pre-rebate retail $8,500-$10,500 installed. After the $1,400 Solar Victoria rebate and roughly $2,500 in federal STCs, you're at $4,600-$6,600 out of pocket. Suits a single-storey home with one or two adults, a typical $300-$400 quarterly bill, no EV and no battery plans. This is also the size where cheap-end installers undercut everyone with $3,000-$3,500 prices - that's always low-tier panels, a budget inverter, and a 5-year workmanship warranty that vanishes when the company folds. Real cost floor for a quality 6.6kW in 2026 is $4,500 net.

10kW - the sweet spot

Around 24-26 panels. Pre-rebate retail $13,500-$16,500 installed. After the rebate and STCs (roughly $3,200 at this size), net cost is $9,000-$12,500. This is the size we put on most family homes in Hawthorn and Glen Iris. It generates 35-40kWh a day in Melbourne on average, covering daytime usage with comfortable export for FIT credits, and leaving headroom for a future battery.

13.2kW - going bigger

Around 32 panels. Pre-rebate $17,000-$21,000 installed. Net after rebate + STCs (around $3,800): $12,000-$15,800. Worth it if you have the roof for it, run ducted heating/cooling, have an EV, or plan to add a 13.5kWh battery. The cost-per-kilowatt is genuinely better than 10kW.

15kW+ - export-limited territory

Around 36-40 panels. Pre-rebate $20,000-$26,000 installed. Net after rebate + STCs: $14,000-$20,500. In most Melbourne suburbs you're now export-limited by your distributor (Citipower, Powercor, Jemena, United Energy or Ausnet - usually capped at 5kW or 10kW export on single-phase). A 15kW system makes sense if you're on three-phase, you have an EV plus a battery, or you genuinely use power during the day. Otherwise you're paying for panels whose output gets curtailed at the inverter.

What actually drives the price

The single biggest cost driver isn't panel brand, it's inverter brand. A Tier-1 panel from Trina, Jinko, REC or Longi sits in a $10-$25/panel range. The inverter spread is much wider:

• →Fronius (Austrian, premium) - $2,200-$3,200 for a 10kW unit. 10-year warranty. Our default for homes that want longevity.
• →SolarEdge (panel-level optimisation) - $2,500-$3,500 for a 10kW system including optimisers. Worth it on shaded or multi-orientation roofs.
• →Sungrow (Chinese, strong value) - $1,400-$2,000 for a 10kW unit. 10-year warranty. Our default for budget-conscious installs.
• →Budget brands (Solis, Goodwe entry tiers, no-name) - $700-$1,200. We don't install these. The failure rate inside 5 years is too high.

Beyond hardware, the cost stack on a 10kW Melbourne install in 2026 looks roughly like: panels $3,000, inverter $1,800, mounting and rails $900, isolators and DC/AC cabling $600, labour for a two-person crew across a one-day install $2,200, scaffold (if pitched roof over single-storey) $400-$800, monitoring setup and commissioning $300, and electrical work at the switchboard $400-$1,200. If your switchboard is pre-1980 or has ceramic fuses, that last line item can balloon - see our switchboard upgrade melbourne cost guide for that conversation.

The 2026 Solar Victoria rebate

The Solar Victoria PV rebate is $1,400 off an eligible install. To qualify you need to: own and occupy the property as your principal place of residence, have a combined household taxable income under $210,000 in the most recent tax year, have a property valuation under $3 million, and not have previously claimed the rebate at the address (this includes previous owners). We run the eligibility check before quote sign-off and handle every piece of paperwork end-to-end. The rebate is applied as a point-of-sale discount on your invoice - you don't pay in full and claim back. Full breakdown of how the rebate process actually runs is in our solar victoria rebate 2026 piece.

Federal STCs - the bigger of the two rebates

STCs (Small-scale Technology Certificates) are the federal rebate and are usually larger than the Victorian one. Melbourne sits in Zone 4 of the STC zoning map, which uses a multiplier of 1.382. The certificates are issued based on your system's expected generation over the deeming period (currently 6 years, reducing each year to 2030). For a 6.6kW system in 2026 that works out to roughly 73 certificates. At a market price of around $33/certificate, that's about $2,400 in STC value. A 10kW system generates roughly 110 certificates, around $3,650.

We monetise the STCs through our accredited trader and apply the value as an up-front discount on your quote - same as the Victorian rebate. You never see the certificates yourself, you just see the discount line.

Payback period - real example

Take an inner-east family home in Balwyn. Two adults, two kids, ducted heating and cooling, $650 a quarter electricity bill ($2,600/year). We spec a 10kW system, north-facing roof, no shading. Net installed cost after rebates: $10,500. Average daily generation in Melbourne for a north-facing 10kW system: around 38kWh. Self-consumption (used in-home) typically lands at 35-40% on a household with no battery, so about 14kWh used directly per day. That offsets roughly $1,250/year of grid imports at current 30c/kWh peak rates. Export back to the grid at a 5c feed-in tariff on the remaining 24kWh per day adds about $440/year. Total annual benefit: around $1,690.

Payback: $10,500 / $1,690 = roughly 6.2 years. Add a 13.5kWh battery and the maths shifts hard - self-consumption jumps to 75-85%, the export-credit number drops but the avoided peak-tariff number rises. With a Tesla Powerwall 3 or Sungrow battery added in for the additional $13,000-$15,000 net cost, the combined system pays back in around 8-9 years and you ride through the 4-9pm peak-tariff window almost untouched. The tesla powerwall 3 vs sungrow vs solaredge piece breaks down the battery side.

Red flags - the quotes you walk away from

• →Door-knocker quotes. Reputable installers don't door-knock in Melbourne. Door-knockers are commission-paid salespeople fronting for a wholesale installer who'll sub the job out to whoever's cheapest on the day. Workmanship warranty is functionally worthless.
• →$0-down loans bundled into the quote. The interest gets baked into the system price - we routinely see $0-down quotes 30-40% above cash-price market rate. If you need financing, get a personal green loan from your bank and pay the installer cash.
• →'Free solar' or 'government solar program' marketing. There is no free solar program. The rebate covers a chunk, not the whole job.
• →Pre-applied rebates on the contract before eligibility is checked. If you sign and your eligibility application fails, you're on the hook for the rebate amount.
• →No-name inverter brands or panel brands not in the Clean Energy Council approved list. The rebate won't fund unlisted equipment.
• →Quotes under $4,000 for 6.6kW or under $6,000 for 10kW (after rebates). The maths doesn't work for quality components at those prices.
• →Sales pressure to sign same-day. A real quote is valid for 30 days. We hold ours for 60.

What we include in our quotes

Every Melbourne Power Group solar quote is fixed-price after a site visit. Included: panels, inverter, mounting, all DC/AC cabling and isolators, install labour, scaffold if required, switchboard upgrade if required (priced separately so you can see it), Solar Victoria rebate application and STC processing, distributor pre-approval, post-install electrical certificate, monitoring app setup, and a 25-year panel performance warranty plus 10-year inverter warranty plus 10-year workmanship warranty from us directly.

Booking a quote

Send us your last quarterly bill and a photo of your switchboard via contact us and we'll come back with an indicative quote inside 24 hours. If the numbers work for you, we'll book a site visit to confirm roof condition and switchboard headroom and convert to a fixed-price quote. We handle the rebate paperwork start to finish. For the install itself see solar, and if you're thinking about adding a battery at the same time see battery storage.