The number of STCs a solar system is eligible for depends on factors such as the system’s capacity, location, and the amount of electricity it is expected to generate over its lifetime. These STCs can be sold to electricity retailers, who are required by law to purchase a certain number of STCs each year.

STCs are created and issued by the Clean Energy Regulator in Australia, and their value fluctuates based on market demand and supply. The price of STCs can vary, but generally, the more efficient and larger the Solar system is, the more STCs it will be eligible for, thus increasing its value.

The process of selling STCs involves registering the Solar system with the Clean Energy Regulator, providing evidence of installation and performance, and then creating and assigning the STCs to a registered agent or buyer. The buyer will then pay the system owner for the STCs, providing a financial incentive for investing in renewable energy systems.

Overall, the STC scheme aims to promote the adoption of Solar energy in Australia by providing a financial benefit to system owners and encouraging the generation of clean, renewable electricity. By selling STCs, Solar system owners can offset the upfront cost of installation and make Solar energy more accessible and affordable for households and businesses.