Australia’s clean energy sector achieved a significant milestone in 2025, with renewables supplying a record 42.7% of the nation’s electricity, according to the Clean Energy Council’s (CEC) Clean Energy Australia 2026 report, released on May 26, 2026. This marks a substantial increase from 38.9% in 2024, demonstrating the accelerating transition away from fossil fuels. However, the report also highlights a concerning slowdown in investment for new large-scale solar and wind projects, threatening the pace of future decarbonisation.
Record Generation Driven by Solar and Batteries
The CEC report underscores the dominant role of solar power in this renewable energy surge. Rooftop solar installations contributed 13.9% of Australia’s electricity in 2025, while utility-scale solar farms increased their share to 7.7%, up from 6.8% the previous year. This combined effort saw solar accounting for over 21% of total electricity generation.
Crucially, the report reveals an unprecedented boom in battery storage, both at grid-scale and within homes. Australia’s home battery market experienced a staggering 260% increase in sales in 2025, with 268,675 units purchased by homeowners. Large-scale battery capacity also saw a remarkable 233% rise, with 12 projects totalling 2 GW commissioned across the National Electricity Market (NEM) and the South West Interconnected System (SWIS) during the year. This surge has propelled Australia to become the third-largest utility-scale battery market globally, behind only China and the United States.
“2025 was a record-breaking year for renewable energy. Renewable energy generated 43% of Australia’s electricity, up from 39% in 2024.”
This rapid expansion of battery storage is critical for firming intermittent renewable generation, allowing more solar energy generated during the day to be dispatched during evening peak demand periods, thereby stabilising the grid and moderating prices. The growing adoption of home batteries also opens up further opportunities for consumers to participate in initiatives like Virtual Power Plants (VPPs). For homeowners considering these systems, understanding the incentives available is key. More information can be found in our guide to Home Battery Rebates Available in Australia 2026.
Investment in New Projects Stalls
Despite the impressive generation figures, the CEC report flags a significant hurdle: a slowdown in financial commitments for new large-scale solar and wind projects. Only 2.3 GW of new renewable energy generation projects reached financial close in 2025, marking one of the lowest levels in a decade. This represents a 46% fall in investment compared to the previous year.
This decline is particularly concerning given the ambitious targets Australia has set for its energy transition. The CEC emphasises that while capital and capability are not the constraints – with a record 64 GW of generation and storage capacity currently waiting for grid connection – the pace of new investment is lagging. Addressing this requires overcoming challenges such as grid connection bottlenecks, planning approvals, and social licence issues.
The Path Ahead for Solar in Australia
The disparity between record renewable generation and stalling new investment presents a critical juncture for Australia’s energy future. While the existing pipeline of projects and the rapid deployment of batteries are delivering immediate benefits, sustained investment is essential to maintain momentum towards the nation’s decarbonisation goals. The report serves as a timely reminder that policy certainty, streamlined regulatory processes, and continued grid modernisation are paramount to unlocking the full potential of Australia’s abundant solar resources.
For consumers, the evolving landscape means a greater emphasis on maximising self-consumption of rooftop solar and leveraging battery storage. The increasing integration of smart inverters and grid-responsive systems, as seen with recent changes in Western Australia, further highlights the need for homeowners to choose compliant and future-proof technologies. Understanding the economics of these systems is vital, and our article on What is the Real Payback Period for a Solar and Home Battery System in Australia 2026? provides detailed insights.
Solar Panel Costs and Outlook for 2026
The cost of solar panels in Australia in 2026 generally ranges from AUD$3,000 to AUD$10,000 after government rebates, with a typical 6.6 kW system costing between AUD$5,000 and AUD$6,000. Prices per watt average around AUD$0.88 to AUD$0.95, fully installed. While the federal Small-scale Technology Certificate (STC) rebate continues to reduce upfront costs, its value is subject to annual reductions until the scheme ends in 2030.
| System Size (kW) | Estimated Cost (After STC Rebate) | Per-Panel Cost Range (AUD) |
|---|---|---|
| 6.6 | AUD$5,000 - AUD$6,000 | AUD$80 - AUD$150 (Budget) |
| 10 | AUD$8,000 - AUD$10,500 | AUD$250 - AUD$300+ (Premium) |
Note: Prices are approximate as of May 2026 and vary by state, brand, and installation complexity.
As Australia navigates its energy transition, the CEC report reinforces that while significant progress has been made, strategic interventions are required to ensure investment keeps pace with the ambition of a clean energy future.
Key Takeaways for Australian Households:
- Rooftop Solar Dominance: Residential solar remains a cornerstone of Australia’s renewable energy mix.
- Battery Boom: Home battery installations are surging, providing greater energy independence and grid support. Explore options for participating in Australia’s Best VPP Programs & $5,000+ Rebates for Home Batteries in 2026.
- Investment Gap: While renewables are performing, new large-scale project investment needs to accelerate to meet future demand.
- Evolving Regulations: Stay informed about changes to grid connection rules and rebate structures, which can impact system design and costs.