Solar PV on the roof rises by 28% month compared to the month
Distributed roof systems achieved the impressive performance in September and generated 2,614 GH in the course of the month – an increase of 28% compared to 2,042 GHWH in August.
This growth becomes clearer if it is considered against the baseline of the previous year, with the generation on the roof production increasing by 13.55% over the 2,302 GWh from September 2024.
The distributed solar power reflects the continued expansion of technology in Australian households and companies. The installations on the roof now contribute 14.9% to the total NEM stream generation. Solar in the supply scale held a steady dynamic and ended in September with 1,319 GWH compared to 1,296 GHWH in August.
As described in the table above, open current (formerly Opennem). Both solar energy types recorded steady growth because the seasonal conditions improved and the daylight lessons extended.
While the monthly increase of 23 GWH appears modest, it corresponds to solid growth of 16.01% compared to the previous year from September 2024 of 1,137 GWh.
The analysis shows that roof systems in September in September an average of 86.4 GWh are exaggerated every day, compared to 44.3 GWh for projects on the supply scale. This performance differential shows the increasing dominance of the distributor generation in the Australian solar landscape.
You can examine the performance of the solar generation in August in our previous NEM data -spotlight, whereby all entries are available PV Tech Premium Subscribers.
Record extensive energy operation
September provided several milestones for renewable energies, with September 22nd reaching the highest immediate proportion of renewable energies of 78.6% of the NEM and exceeding the record of 77.9% of the past day.
Solar installations on the roof dominated these historical moments and contributed over 43% to the total grid question during the period of renewable energies, while Solar increased by 12.1% and 19.8% wind generation.
In the record day, Solardofiftop delivered 94GWH for the NEM, although this was not the monthly performance of the month. On September 18, roof systems reached the highest daily performance of 104 GH, which demonstrated the capacity of the technology under optimal spring conditions.
Conversely, September 10 marked the weakest solar performance of the month, whereby the roof systems generated only 57GWH, while installations in the utility only contributed 10 GWh.
Despite this low point, the minimum production of Dooftop Solar exceeded the median performance of 44GWh from useless number, which indicates a robust basic performance with regard to distributed installations.
The pricing of volatility contains market challenges
The achievements of the production in September in September came together with a serious price volatility, which revealed structural challenges in the Australian market.
Both scales of the solar use had extreme fluctuations in value and reached the tips near 85 US dollars/MWh (56.22 USD/MWh) before plunging into a deeply negative area.
The roof systems were exposed to negative prices on 56.7% of the September days, compared to 46.7% for installations in the utility. Perhaps rather threatening that solar on the roof a low point of -au $ 34.23/MWhfast Double Utility -scale -Mindest beginnings $ 18.22/MWh.
These price challenges led to significant economic differences. In September in September, Solar was $ 4.93 AU $ 4.93/MWh compared to the au $ 1.41/MWh from roof in roof, which, despite a similar top price potential, achieved three and a half times more monthly.
The extreme volatility with variation coefficients of over 400% for both technologies signals market stress with increasing penetration of renewable energies.
The solardachdooks looked particularly strong with a standard deviation of $ 25.32/MWh compared to $ 21.85 au-US $/MWh.
Renewable energies offer 7.5TWH for the NEM
September 2025 was a turning point for Australia, whereby renewable energy sources delivered over 7.5 TWh of the generation and placed the proportion of Clean Energy beyond the 50% neck threshold.
Solar technologies dominated the landscape for renewable energies, with its combined 3,933GWH 22.4% of the total NEM generation, which was solar as the second largest source of the generation of black coal.
Wind energy remained the largest contribution to the individual renewable energies and made 3,388GWH (19.3% of total production) and at the same time provided a decisive capacity for renewable energies for renewable energies that complement the Solar daily profile.
Despite the increase in renewable energies, coal production maintained its general dominance, with black coal contributing 6,290 gile (35.8%) and brown coal 1.977GWH (11.3%).
Combined coal technologies made up 47.1% of the total generation, which corresponds to a continued decline in historical levels, but highlighted the gradual transition.
Battery storage systems were released in September 151GWH, which demonstrated, like a growing memory for storage in the NEM. The fast expansion of the technology corresponds to only 0.9% of the total generation, and indicates an increasing importance for the management of renewable energy integration problems.