Australia’s National Electricity Market (NEM) saw record-breaking solar generation in August 2026, alongside a significant reduction in large-scale solar curtailment. New data published today by Rystad Energy and PV Tech confirms a robust month for renewable energy, underscoring improved grid integration and management across the eastern states.
According to Rystad Energy, utility-scale photovoltaic (PV) generation reached unprecedented highs in New South Wales, Queensland, and Victoria last month. NSW led with 684 GWh, followed by Queensland at 665 GWh, and Victoria contributing 213 GWh. This surge in large-scale output coincided with a dramatic drop in curtailment, the practice of intentionally reducing renewable energy generation to maintain grid stability. Large-scale solar curtailment across the NEM fell to 168 GWh, representing approximately 9% of available generation in August 2026. This marks a substantial improvement from 284 GWh, or 18% of renewable generation, recorded in August 2025.
“Utility PV generation reached record highs in New South Wales (NSW), Queensland, and Victoria in August 2026, delivering 684 GWh, 665 GWh and 213 GWh of clean energy respectively.”
Combined utility-scale solar and wind assets generated 4.99 TWh of clean energy in August, a 3% increase from the 4.86 TWh produced in the same month last year. This performance demonstrates the grid’s enhanced capability to absorb and manage high volumes of intermittent renewable energy, a critical development for Australia’s energy transition.
NEM Solar Output Hits New Heights
Further analysis from PV Tech indicates that the NEM recorded a combined 3,893 GWh of solar generation in August 2026. This total comprises 1,628 GWh from utility-scale assets and 2,265 GWh from rooftop solar systems. The overall combined figure represents a 17.3% increase from July 2026’s 3,320 GWh total and a 16.6% rise year-on-year from August 2025’s 3,338 GWh.
Rooftop solar, a cornerstone of Australia’s energy mix, also showed strong performance, with its 2,265 GWh output being the highest recorded since April 2026. This segment saw a 21.0% increase from July’s 1,872 GWh and was 10.9% higher than August 2025’s 2,042 GWh. The sustained growth in rooftop solar installations continues to empower Australian households to take control of their energy consumption and contribute to the national renewable energy targets. For those considering joining the millions of Australians already benefiting, understanding Solar System Installation Costs in Australia 2026: A Complete Guide is a crucial first step.
Curtailment Reduction Signals Grid Maturity
The halving of large-scale solar curtailment as a percentage of available generation, from 18% in August 2025 to 9% in August 2026, is a significant indicator of the NEM’s evolving capacity to integrate renewables more effectively. Curtailment occurs when renewable generators are instructed to reduce output, often due to network constraints or oversupply. Its reduction suggests improvements in transmission infrastructure, better forecasting tools, and more sophisticated grid management strategies by entities like the Australian Energy Market Operator (AEMO).
This positive trend contrasts with past challenges, such as instances where thousands of solar owners faced curtailment due to grid instability. The ability to significantly reduce wasted renewable energy means more clean power is reaching consumers, which can contribute to lower wholesale electricity prices and enhanced energy security.
State-Level Performance and Project Milestones
Queensland’s utility PV assets demonstrated strong performance in August 2026, with the top three projects, including the 100 MW first stage of Pacific Blue Australia’s Haughton Solar Farm and the 204 MW Edenvale Solar Park, recording an average AC capacity factor of 28% for the month.
Beyond generation data, significant project milestones are also contributing to Australia’s solar capacity. Just yesterday, the 119 MW SEC Renewable Energy Park – Horsham solar farm in Victoria connected to the electricity grid for the first time, moving into its commissioning and energisation phase. Similarly, Central Queensland Power (CQP) recently secured crucial planning approval for a section of the transmission line connecting its proposed AUD 1.9 billion, 450 MWdc Wooderson solar park, which will be coupled with an eight-hour, 3,600 MWh battery energy storage system.
The Role of Technology and Policy
The ongoing improvements in grid integration are partly attributable to advancements in solar inverter technology and evolving regulatory frameworks. New rules are continuously being implemented to ensure solar and battery systems interact optimally with the grid, helping to manage export limits and enhance overall stability. Readers interested in how these changes might affect their systems can refer to Australia’s New Solar Inverter Rules 2026: Slash Export Limits by Up To 85% Without a Smart Inverter.
The Clean Energy Regulator’s (CER) Quarterly Carbon Market Report for Q2 2026 (April to June) also noted record rooftop solar installations exceeding 1 GW and small-scale battery installations reaching over 111,000 systems. This sustained uptake of both solar panels and home batteries, alongside the federal government’s expansion of the Small-scale Renewable Energy Scheme (SRES) to include commercial solar systems up to 1 MW from October 1, 2026, signals a continued strong trajectory for solar energy in Australia. For homeowners researching optimal setups, guides such as Best Solar Panels for Australian Homes 2026: Efficiency, Warranty & Performance Compared remain highly relevant.
These collective efforts in generation, grid management, and policy support are crucial as Australia progresses towards its ambitious renewable energy targets, delivering a more resilient and sustainable energy future for all consumers.