CEC Accredited · Victorian Businesses · Tier-1 Equipment

Cut your commercial power bill by up to 80%

A 30kW Tier-1 commercial solar system, fully supplied and installed, with two government rebates already stacked into the price. Trina Solar panels, Fronius inverter, engineered and installed by an accredited commercial team.

FROM $51,876*
30kW solar system installed on a factory roof

30kW commercial system

59 panels + Fronius inverter

80%

Bill reduction*

4–5yr

Payback period

409%

20-year ROI

$10,208

Rebates already applied

Why this system

Not just another solar company

We’re Engineers Australia members with a strong commercial solar focus — not a pop-up operation riding a subsidy wave.

$212k+

Net present value over 20 years

Based on verified commercial case studies: ~$11,073/year in savings, a 4–5 year payback period, and 409% total ROI over the system’s lifetime.

Tier-1

Best-in-class equipment

Trina Solar — a top-3 global panel manufacturer — and Fronius, Austrian-engineered at 98.6% efficiency.

CEC

Accredited team

Solar Accreditation Australia, Master Electricians, NECA, New Energy Tech Approved Seller.

2

Stacked rebates

Federal STCs and Victorian VEECs, both already deducted from your price.

30yr

Warranty-backed

25-year product + 30-year linear performance on panels, 10 years on the inverter.

The rebates, explained

Federal STCs & Victorian VEECs, stacked

This offer stacks federal Small-scale Technology Certificates with Victorian Energy Efficiency Certificates under VEU Activity 47 — both already deducted from the advertised price. iPromise handles all STC assignment and VEEC paperwork on your behalf, at no extra charge.

STC values reduce each calendar year as the federal scheme winds down to 2030. Current pricing will not improve — the next reduction lands 1 January 2027.
Federal STCs (180 × $36) $6,480
Victorian VEECs (40 × $77) $3,080
Total rebate savings $9,560
System specifications

Tier-1 equipment, properly engineered

No entry-level products. Every component is sized and certified for genuine commercial use.

Panels

System size
30.385kW DC / 25kW AC
Panel brand & model
Trina Solar Vertex S+ TSM-515NEG18R.28
Number of panels
59 × 515W monocrystalline
Panel degradation
99% Yr 1, −0.4%/yr to Yr 30
Panel warranty
25yr product + 30yr performance

Inverter & System

Inverter brand & model
Fronius Verto 25.0 400, 3-phase
Inverter efficiency
98.6% maximum
Annual generation
~40,754 kWh / year
System efficiency
87%
Workmanship warranty
5 years, contractual
Full-service, supply & install

Everything needed for a complete installation

One price covers the whole job — equipment, labour, compliance and paperwork.

How it works

From enquiry to switch-on

No guesswork and no surprises — site-specific extras are identified before any deposit is taken.
1

Enquiry & free assessment

Submit your details — our team visits site, usually within a week.

2

Proposal & deposit

Confirmed pricing issued; 50% deposit locks in your design and permits.

3

Installation

Typically 4–6 weeks after deposit; installed in 3–5 days on site.

4

Handover & rebates

Monitoring activated, meter upgraded, STCs & VEECs processed for you.

What to look for

Not every solar upgrade is the same

End-to-end commercial solar solutions tailored to the needs of Victorian businesses. 

Consideration
Typical Installer
IPROMISE AUSTRALIA
Accreditation
Basic CEC licence only
CEC + Engineers Australia + Master Electricians + NECA
Equipment tier
Often Tier 2/3 budget brands
Tier-1 Trina Solar + Fronius
Commercial experience
Mostly residential
Dedicated commercial focus
Rebate handling
Customer manages paperwork
STCs & VEECs fully handled
Results evidence
Marketing claims
Verified before/after bill case studies
Is this right for your business?

A quick self-check before you enquire

This pricing is a starting-from offer — a free site assessment confirms exactly where you land.

Most sites see full payback in 4–5 years — then it's 15-plus years of dramatically lower power bills.

Based on verified commercial case studies

Starting-from offer

Simple, all-inclusive pricing

Every project gets a free site assessment before final pricing is locked in — most small/medium commercial sites land at or very close to these numbers.

30kW Commercial Tier-1 System

Regular retail: $62,084 inc. GST

Save $10,208

$51,876*

inc. GST, after federal STCs & Victorian VEECs — subject to site assessment

Deposit (50%)

$25,938

On completion (50%)

$25,938

  • Full supply & installation, Tier-1 equipment
  • Federal STCs & Victorian VEECs already deducted
  • Grid connection application lodged for you
  • 5-year workmanship + up to 30-year product warranty
  • Finance available via Green Loan Broker — ask our team
Get my free site assessment
*Starting-from price. Final pricing and rebate eligibility are confirmed after a free site assessment. STC values reduce annually as the federal scheme winds down to 2030 — next reduction 1 January 2027.
Common questions

Frequently asked questions

It’s a starting-from price for a typical small/medium commercial site. Every project gets a free site assessment before final pricing is locked in — the vast majority of sites land at or very close to this figure, and any site-specific extras (like a switchboard upgrade) are identified upfront, before any deposit is taken.
This offer stacks federal Small-scale Technology Certificates (STCs) worth $7,128 with Victorian Energy Efficiency Certificates (VEECs) worth $3,080 under VEU Activity 47 — a total of $10,208, already deducted from the advertised price. VEECs are available to Victorian businesses only, one claim per NMI. We handle all the paperwork for both.
Site-dependent items such as switchboard upgrades, meter panel reconfiguration, additional cabling beyond the standard allowance, roof structural repairs, trenching, or crane hire (rare). Our assessment team identifies any of these upfront, before you commit to a deposit.
50% deposit ($25,938) secures your design, grid connection application and permits; the remaining 50% ($25,938) is due on installation completion. Finance options are available through our Green Loan Broker partner — in most cases, repayments are fully covered by the savings the system generates.
Installation typically begins 4–6 weeks after your deposit, once the design is finalised and grid connection approved. On-site installation for a 30kW system is usually completed in 3–5 days.
You’ll likely qualify if you’re a Victorian business or commercial property owner (or tenant with landlord consent), hold an ABN, have a suitable roof, spend roughly $1,200+/month on electricity, and have no export limit on your connection. There’s no industry restriction — warehouses, offices, retail, hospitality, gyms, factories, schools and farms are all suitable.
We’re Engineers Australia members with a genuine commercial solar focus, not a pop-up operator riding the subsidy wave. We carry real accreditations — Solar Accreditation Australia, Master Electricians, NECA, New Energy Tech Approved Seller — and back our work with verified before/after case studies, Tier-1 equipment, and rebate paperwork fully handled for you.
Free site assessment

Get your free commercial solar assessment

Our team will visit your site, usually within a week, and confirm your exact pricing and rebate eligibility — no obligation.