1. What are STC Credits?

STC (Small-scale Technology Certificate) credits are part of Australia's Renewable Energy Target scheme. For heat pumps, STCs represent the renewable energy produced by displacing conventional electric water heating.

2. How STC Calculation Works

The calculation considers:

Where:

• System Capacity — The rated capacity of your heat pump system in kW
• Deeming Period — Either 10 years (standard) or 5 years (for some commercial systems)
• Regional Zone Factor — Based on climate zone (1-4) affecting system efficiency
• Postcode Multiplier — Location-specific factor from the Clean Energy Regulator

3. Importance of STC Calculation

Details: Accurate STC calculation is essential for determining the financial rebate you can receive when installing an eligible heat pump system in Australia.

4. Using the Calculator

Tips: Enter your system's rated capacity, select your climate zone, enter your postcode, and choose the appropriate deeming period. The calculator provides an estimate of STC credits you may be eligible for.

5. Frequently Asked Questions (FAQ)

Q1: What is the current STC price?
A: STC prices fluctuate based on market conditions. Check with the Clean Energy Regulator for current values.

Q2: Are all heat pumps eligible for STCs?
A: Only heat pumps that meet specific efficiency standards and are installed by accredited professionals qualify.

Q3: How do I claim STCs?
A: Your installer typically handles the STC creation and assignment process through the REC Registry.

Q4: Can I use this calculator for commercial systems?
A: Commercial systems may have different calculation methods. Consult the Clean Energy Regulator for commercial installations.

Q5: How accurate is this calculator?
A: This provides an estimate. Final STC quantity is determined by the Clean Energy Regulator based on your specific installation details.