Solar PV achieves winter 2024 record generation as South Australia runs on 100% renewable energy

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Rooftop solar PV generated 21.1% of South Australia’s electricity in the last week of winter 2024. Image: Plico Energy via Twitter.

From 26 August to 1 September, Australia’s National Electricity Market (NEM) saw the highest rooftop and utility-scale solar PV contribution across the 2024 winter period.

According to OpenNEM, which grants the public information on the NEM, rooftop solar PV provided 13.2% of the total electricity generation in the last week of the official winter season, whereas utility-scale solar PV delivered 6.2%. This means that 19.4% of the electricity mix on the NEM came from solar PV during the last week.

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Across the NEM, rooftop solar PV generated 522GWh of energy, whereas utility-scale solar PV produced 245GWh. This means rooftop solar PV ranked third in all energy generated, only bettered by coal (black), which generated 1,436GWh, and wind energy, contributing 964GWh.

The average value of the rooftop solar PV per MWh was AUS-$33.34 (US-$22.57), with utility-scale solar achieving an average of AUS-$13.42.

August temperatures soared to record levels this winter, standing at 3C above average. The winter period has also been recognised as the second hottest since records began in 1910, with temperatures 1.48C above average, only trumped by 2023’s winter, which saw temperatures reach 1.54C above average.

The previous record for solar PV this winter was set just a week prior (19 August – 25 August), when rooftop solar PV produced 434GWh of energy, with utility-scale solar complementing this with a further 262GWh.

South Australia runs on 100% renewable energy

South Australia’s energy mix from 26 August – 1 September. Image: OpenNEM.

Elsewhere, South Australia reached a key milestone by running on over 100% renewable energy across the same week, showcasing its solar PV, wind and energy storage prowess.

Indeed, rooftop solar PV generated 21.1% of the 102.2% figure, around 56GWh generated over the week at an average price of AS-$52.02/MWh. On the other hand, utility-scale solar provided 3.9% of the overall mix, around 10.4GWh, at an average price of AUS-$30.96/MWh.

Although solar PV contributed to the overall landmark, wind energy produced most of the renewable energy across the week, with around 204GWh (77.1%).

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