Clean Energy Regulator

The Clean Energy Regulator is an independent statutory authority established in 2012 under the Clean Energy Regulator Act 2011. It sits within the Australian Government's Environment and Energy portfolio and is responsible for administering several pieces of legislation, most notably the Renewable Energy (Electricity) Act 2000, which underpins the Renewable Energy Target (RET).

For the solar industry, the CER's most visible role is managing the Small-scale Renewable Energy Scheme (SRES). This is the mechanism through which homeowners and businesses receive a financial incentive for installing solar panels, solar hot water systems, and small wind turbines. The CER oversees the creation, validation, and trading of Small-scale Technology Certificates (STCs), which form the basis of what most Australians call the "solar rebate".

Beyond the SRES, the CER also administers the Large-scale Renewable Energy Target (LRET), the National Greenhouse and Energy Reporting Scheme (NGERS), the Emissions Reduction Fund, and the Australian Carbon Credit Unit (ACCU) scheme. It is the single government body with the broadest oversight of Australia's clean energy regulatory landscape.

Small-scale Technology Certificates are the financial mechanism that makes solar affordable for most Australian households. When a solar system is installed, a number of STCs are generated based on the system's capacity, its geographic location (which affects expected output), and the number of years remaining until 2030, when the scheme is scheduled to end. The deeming period reduces by one year annually, meaning the rebate value gradually decreases over time.

In practice, most homeowners never handle STCs directly. Instead, the installer offers a point-of-sale discount in exchange for the right to create and sell the certificates. The installer (or an STC aggregator acting on their behalf) then registers the certificates in the REC Registry and sells them on the open market or through the STC Clearing House at a fixed price of $40 per certificate. The market price fluctuates based on supply and demand, but has historically traded close to the clearing house price.

For a typical 6.6 kW system installed in Sydney, this translates to roughly 80-90 STCs, worth approximately $2,800 to $3,200 as an upfront discount. You can estimate your rebate using our STC calculator.

The Renewable Energy Certificate Registry is the CER's online platform where all renewable energy certificates are created, transferred, and surrendered. Every STC and LGC in Australia passes through this system, making it the most comprehensive data source for tracking solar installations nationwide. When an installer creates STCs for a completed installation, the details are recorded in the registry, including system size, panel and inverter models, installation date, and postcode.

This data is invaluable for understanding solar uptake trends. The CER publishes aggregated REC Registry data as open datasets, which researchers, policymakers, and industry analysts use to track installation volumes, average system sizes, and regional adoption patterns. Our own industry statistics are built primarily from REC Registry data, giving you a clear picture of where the market stands in each state and territory.

The registry also plays a compliance role. If the CER identifies fraudulent or non-compliant STC claims, it can suspend or cancel certificates, and the registry records these actions publicly. This transparency helps maintain the integrity of the SRES and ensures that the certificates traded in the market represent genuine solar installations.

The CER operates a compliance and enforcement program that includes random inspections of completed solar installations, audits of STC creation claims, and investigations into suspected fraud. The inspections program selects a sample of installations each year for independent review by qualified assessors. These inspectors visit the site, verify that the system matches the paperwork, and check that the installation meets Australian Standards (AS/NZS 5033 for solar arrays and AS/NZS 4777.2 for inverter connections).

When the CER finds non-compliance, it has several enforcement tools at its disposal. The most common are enforceable undertakings, where the installer agrees to rectify issues and improve their processes. For more serious breaches, the CER can issue ineligibility declarations, which prevent an installer from creating STCs entirely. In extreme cases, the CER can pursue civil penalties through the Federal Court. All enforcement actions are published on the CER's website, and we track them in our Accountability Index.

The inspection failure rate has been a point of ongoing concern. In recent years, roughly 15-20% of inspected installations have been found to have at least one issue, ranging from minor paperwork discrepancies to serious safety defects. The CER uses this data to identify patterns, target repeat offenders, and adjust its compliance strategy accordingly.

If you are a solar installer, the CER is the body you interact with most frequently for STC creation and compliance. To create STCs, you need an account in the REC Registry and must be registered as an agent or have an arrangement with a registered agent (often an STC aggregator). Each STC claim requires you to submit installation details including the system owner's information, system specifications, and evidence of compliance with relevant standards.

The CER cross-references your STC claims against its data holdings, and inconsistencies can trigger an audit. Common issues that attract scrutiny include creating STCs for systems that exceed the inverter's rated capacity, claiming certificates for installations at addresses where STCs have already been created recently, and submitting claims with component serial numbers that do not match the Approved Products List. Keeping accurate records and ensuring your paperwork matches the physical installation is the single most effective way to reduce your audit risk.

Installers who receive an ineligibility declaration from the CER face serious business consequences. You cannot create STCs during the period of ineligibility, which means you cannot offer customers the point-of-sale discount that makes your quotes competitive. Declarations are published publicly on the CER website and appear in our Accountability Index, which can affect your reputation with prospective customers. If you receive notice of a CER investigation, seek legal advice early and cooperate fully with the process.