STCs to Reduce in 2024: How to Maximise Your Savings

stc rebate

The Australian solar energy landscape is set for a significant change in 2024 as the number of Small-scale Technology Certificates (STCs) allocated to small-scale systems is set to decrease. This development is crucial for homeowners and businesses looking to invest in solar power systems or expand their existing installations. In this article, we will explore the upcoming changes in the allocation and value of STCs and discuss strategies to maximise your savings on solar energy investments in Australia.

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Are solar rebates reducing in 2024?

While STCs are not considered rebates, the current discount on small-scale solar, wind and hydro systems is set to reduce in 2024. We will refer to the discount as a rebate in this blog. The Australian government’s Small-scale Renewable Energy Scheme (SRES) is a market-based scheme that incentivises households and businesses to install small-scale renewable energy systems, such as solar PV systems. It is important to note the two different aspects of STCs:

  • Allocation: This is the number of STCs allocated to a system. For example, a 10kW solar system may be allocated 130 STCs.
  • Value: This is the value of each individual STC. Usually, your solar installer will provide you with a discount on the upfront cost of your system based on the total value of the STCs. This means they ‘purchase’ the STCs from you and on-sell them. You do not have to ‘sell’ your STCs to the installer, though you will receive no upfront discount and be tasked with selling them yourself.

STCs are allocated to a renewable energy system using the following formula:

Postcode Zone Rating x Deeming Period Years x System Size in kW = Number of STCs created

The deeming period is the amount of years left before the SRES ends in 2030. This means that the amount of STCs a system is allocated reduces every year on January 1st.

The value of Small-scale Technology Certificates (STCs), which are the financial incentives created under the SRES, is determined by market forces. The price of STCs has been declining recently, which is expected to continue in 2024.

However, it is important to note that the SRES will end in 2030. This means that the value of STCs will continue to decline over time, but the scheme will still provide a financial incentive for households and businesses to install solar PV systems until it ends.

Why the decrease in STC rebate rates?

The decrease in STCs is primarily a result of the Federal Government’s plan to gradually phase out this subsidy, in line with their commitment to encouraging solar energy adoption while ensuring fiscal responsibility. As solar energy technology becomes more affordable and widely adopted, the government seeks to reduce the financial burden on taxpayers.

The reduction in STC rebate rates is part of a staged approach to rebalancing incentives for renewable energy. It is a signal that solar energy is becoming more competitive and financially sustainable without heavy subsidies.

The benefits of installing the first 99 kW

In Australia, the STC program incentivises installing small-scale solar power systems, making solar energy more affordable for consumers. The program offers certificates to those who install solar panels, and these certificates can be traded on the open market. The number of certificates you receive depends on the size and location of your solar installation.

Once a project exceeds 100kW, it is no longer eligible for STCs. Instead, Large-scale Generation Certificates (LGC) come into play. LGCs are generated by the system, not allocated to it. This means that there is no discount on the upfront cost of your system and the project becomes a ‘power plant’. For every megawatt of electricity generated, an LGC is created, which can be on-sold.

For this reason, many large projects choose to keep the system size under 100kW – adding to it later to increase its size and generation. By keeping it under 100kW, you can benefit from the immediate reduction of the upfront cost of the system.

STC price forecast

The price of STCs can vary over time due to factors such as market demand, policy changes, and the number of certificates available. 

The exact amount of the rebate will vary depending on the size and efficiency of the solar system, as well as the property’s location.

While it’s challenging to predict the exact future price of STCs, experts in the solar industry often make forecasts based on current trends and government policies. To stay informed about the STC price forecast, following industry reports and consulting with solar professionals is recommended.

STC rebate for 2024

As with the STC price forecast, the rebate for STCs in 2024 is subject to change based on government policies and market dynamics. The rebate for 2024 will depend on the number of certificates your solar installation qualifies for and the current market value of those certificates. It’s crucial to consult with your solar installation provider or the Clean Energy Regulator to obtain accurate and up-to-date information on the STC rebate for 2024.

stc rebate

Source: STC modelling report by Green Energy Markets

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The value of 1 STC

The value of one STC is not fixed and can fluctuate based on market conditions. As of the last update in January 2022, the price of one STC was around $35 to $40. However, this value may change over time, and it’s essential to check the current market price when planning your solar installation or looking to trade your STCs.

Maximising your solar savings

While the reduction in STC rebate rates may appear concerning, there are several strategies that homeowners and businesses can employ to continue enjoying the benefits of solar energy without compromising their savings.


Choose high-quality components

Invest in high-quality solar panels, inverters, and other system components to maximise energy production and efficiency. This will ensure that your solar system continues to deliver significant savings over its lifetime.

Consult with experts

Consult solar energy experts and installers to evaluate the most cost-effective options for your specific needs. They can provide valuable insights into the best technologies and strategies to maximise savings.

Act sooner rather than later

To secure higher STC rebate rates, consider investing in solar energy systems before the expected decrease in 2024. You can take advantage of the existing subsidies and maximise your savings by acting promptly.

Energy storage solutions

Combining your solar system with energy storage solutions, such as batteries, can help you make the most of the energy you generate. This will allow you to use solar power during peak periods and reduce your dependence on grid electricity.

Government incentives

Keep an eye on other government incentives or programs that may become available to offset the decrease in STC rebate rates. The government may introduce alternative support mechanisms to promote solar energy adoption.

Energy efficiency measures

Implement energy-saving measures in your home or business to reduce energy consumption. This can help you get more value from your solar system, even with lower STC rebate rates.

Take advantage of net metering

Net metering is a billing arrangement that allows you to sell the excess electricity that your solar panel system generates back to the grid at a retail rate. This can help to offset the cost of your electricity bills.

Install your solar panel system during the off-season

Solar panel installers typically offer lower prices during the off-season, typically from November to February.

Consider financing your solar panel system

There are several different solar panel financing options available, which can make it easier to afford the upfront cost of installing solar panels.

Taking action before the rates drop

The impending decrease in STC rebate rates in Australia in 2024 underscores the need for proactive planning when it comes to solar energy investments. By taking action before the rates drop, investing in high-quality components, and adopting energy-efficient practices, homeowners and businesses can continue to reap the benefits of solar power and achieve long-term savings. The Australian solar energy landscape is evolving, and staying informed and making wise choices can ensure a sustainable and financially viable future for renewable energy adoption in the country.

Still can’t afford to switch to solar power?

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