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Red Flag #7 of 7

STC Miscalculations

Some offers underestimate or misrepresent your rebate value. Understanding how STCs (Small-scale Technology Certificates) work helps you verify you're getting your full entitlement.

What It Looks Like

“The rebate is already included in your quote price.”

Red Flag: Without showing the STC calculation, you can't verify you're getting the full rebate amount.

“STCs are trading at $38 each right now.”

Red Flag: Ask how they've priced the STCs. Prices move, and the figure should be close to the current market price.

“We'll handle the rebate paperwork for you after installation.”

Red Flag: You should know your expected STC value upfront so you can verify you received it.

The Real Risk

STCs are valuable certificates created when renewable energy systems are installed. The number of STCs you're entitled to depends on your system size, location, and when it's installed. If an offer miscalculates or doesn't pass on the full value, you could be losing hundreds to thousands of dollars.

Cost Impact

$500 - $2,500 in undervalued STCs

Time Impact

One-time loss at installation

  • STC values change regularly - outdated quotes may undervalue your entitlement
  • Some companies use below-market STC prices and keep the difference
  • Incorrect zone classifications can reduce your STC count

How to Protect Yourself

Request an itemized STC breakdown

Ask for the quote to show: number of STCs, price per STC, and total rebate value separately.

Verify STC calculations

Use the Clean Energy Regulator's calculator to independently verify the number of STCs you're entitled to.

Check current STC spot prices

Look up current STC trading prices online and compare them to the price in your offer.

Understand your solar zone

Australia is divided into zones that affect STC calculations. Check the offer uses the correct zone.

Get the rebate value in writing

Ensure your contract specifies the exact STC value being applied to your installation.

How We Handle This

Every system through RebateSpy comes from an accredited retail partner we've vetted, with blackout protection and the likely installation extras priced in upfront.

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