1. What is a Solar Hot Water STC Calculator?

Definition: This calculator estimates the number of Small-scale Technology Certificates (STCs) for solar hot water systems based on annual energy savings.

Purpose: It helps homeowners and installers determine the renewable energy certificates that can be claimed for installing eligible solar hot water systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( STC \) — Small-scale Technology Certificates
• \( \text{Annual Energy Savings} \) — Energy saved by the solar hot water system (MWh per year)

Explanation: Each STC represents 1 MWh of renewable energy generated or displaced over 10 years.

3. Importance of STC Calculation

Details: STCs provide financial incentives for installing renewable energy systems and can significantly reduce the upfront cost of solar hot water systems.

4. Using the Calculator

Tips: Enter the annual energy savings in megawatt-hours (MWh). The value must be greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: What are STCs?
A: STCs are tradable certificates created under the Renewable Energy Target for eligible small-scale renewable energy systems.

Q2: How do I find my annual energy savings?
A: This is typically provided by your solar hot water system installer or can be estimated using system specifications.

Q3: What's the value of an STC?
A: The value fluctuates with market conditions but is typically between $30-$40 per certificate.

Q4: Can I claim STCs for any solar hot water system?
A: Only systems that meet specific eligibility criteria under the Renewable Energy Target can generate STCs.

Q5: How are STCs calculated for different system sizes?
A: The calculation is based on the actual energy savings, so larger systems with greater savings will generate more STCs.