Australia’s rooftop solar sector continues its robust expansion, with new data from the Clean Energy Regulator (CER) revealing a significant increase in installed capacity for April 2026. The nation added 467 megawatts (MW) of small-scale solar capacity during April, more than doubling the 207 MW installed in the same month last year. This strong performance follows a record-setting first quarter and underscores the sustained momentum in household solar adoption across the country.
The latest figures, reported by the CER on June 12, 2026, indicate that the pace of installations has remained vigorous into the second quarter of the year. This comes after a record-breaking Q1 2026, which saw 791 MW of small-scale solar capacity installed across approximately 77,000 systems—a 21% increase from Q1 2025.
Drivers Behind the Surge
The consistent uptake of rooftop solar is largely attributed to a combination of escalating electricity costs, the long-term financial benefits for homeowners, and ongoing government incentives. Australians are increasingly recognising the substantial savings achievable by generating their own power, especially as energy prices remain volatile. The average system size has also grown, reflecting a trend towards larger installations to maximise self-consumption and offset higher bills.
Federal support, primarily through the Small-scale Renewable Energy Scheme (SRES) and its Small-scale Technology Certificates (STCs), continues to provide an upfront discount on solar system purchases. This financial incentive remains a cornerstone for making solar accessible to a broad range of households and small businesses. For instance, a typical 6.6 kW solar system in 2026 could see an upfront discount of approximately AUD $1,600 through STCs.
“As more Australians install solar and batteries, they are changing how they generate, store and use electricity.” — CER Chair David Parker, June 2026
STC Market and Battery Integration
The STC market plays a crucial role in the financial viability of solar installations. The value of STCs, which are traded by market participants, directly influences the upfront cost of a system. Recent changes, effective from May 1, 2026, also impact how STCs are generated for home battery systems under the Cheaper Home Batteries Program. These amendments introduced tiered STC factors based on usable battery capacity, with different rates applying from 0 kWh up to 50 kWh.
This week, on June 24, 2026, the Department of Climate Change, Energy, the Environment and Water (DCCEEW) provided an update on STC purchasing for batteries, announcing a pause in purchases between June 29 and July 3, 2026, due to end-of-financial-year processes. Purchasing will resume in the week beginning July 6, 2026. This temporary pause affects STCs created specifically for eligible battery installations and highlights the dynamic nature of the STC market.
STC Factor Changes for Batteries (Effective May 1, 2026)
| Usable Capacity Range (kWh) | STC Factor Applied |
|---|---|
| 0 - 14 (inclusive) | 100% |
| >14 - 28 (inclusive) | 60% |
| >28 - 50 (inclusive) | 15% |
It is important for homeowners considering battery installations to be aware of these changes, as the number of STCs generated directly impacts the upfront discount received. The Cheaper Home Batteries Program, which commenced on July 1, 2025, has already driven a surge in storage installations, with over 82,000 validated batteries or 2.5 GWh of storage capacity installed in Q1 2026 alone.
What This Means for Your Energy Bill
For Australian households, the continued growth in rooftop solar capacity translates directly into greater potential for energy bill savings. By installing solar, homeowners can significantly reduce their reliance on grid electricity, particularly during peak daytime hours when solar generation is highest. The increasing adoption of home battery systems further enhances these savings by allowing stored solar energy to be used during the evening peak, when grid electricity is most expensive. For insights into optimising your system, consider What Solar System Size Do You Really Need in Australia 2026? Future-Proofing for EVs & Electrification.
The CER forecasts a rebound in rooftop solar to between 3 GW and 3.7 GW in 2026, supported by ongoing demand and the Cheaper Home Batteries Program. This suggests a continued positive outlook for homeowners looking to invest in solar to manage their energy costs.
For those exploring options to reduce upfront costs, understanding various financing models is key. More information can be found in our guide on Best Solar Panel & Home Battery Financing Options in Australia 2026: Loans, PPAs & Green Mortgages Explained.
Grid Implications and Future Outlook
The rapid growth of small-scale solar and batteries is fundamentally reshaping Australia’s energy grid dynamics. Distributed energy resources are increasingly contributing to shifting renewable electricity from daytime generation to evening consumption, which benefits all consumers by reducing demand on the grid during peak periods. This shift is crucial for grid stability and for integrating a higher proportion of renewable energy into the national electricity market. As the market evolves, the role of Home Battery Backup for Blackouts in 2026: Systems & Costs from $7,000 becomes increasingly important for both individual resilience and grid support.
The strong installation rates in Q1 and April 2026 demonstrate Australia’s commitment to its renewable energy targets and its position as a global leader in household solar adoption. While challenges remain, particularly around grid integration and compliance, the overall trajectory indicates a sustained expansion of the small-scale solar sector well into the future.