{"id":66666,"date":"2022-10-19T06:56:19","date_gmt":"2022-10-18T20:26:19","guid":{"rendered":"https:\/\/www.solarquotes.com.au\/blog\/?p=66666"},"modified":"2022-10-19T15:25:37","modified_gmt":"2022-10-19T04:55:37","slug":"sa-solar-disconnect-mb2681","status":"publish","type":"post","link":"https:\/\/www.solarquotes.com.au\/blog\/sa-solar-disconnect-mb2681\/","title":{"rendered":"Plug To Be Pulled On Some Rooftop Solar In SA Today?"},"content":{"rendered":"

\"Solar<\/p>\n

A bunch of rooftop solar power systems in South Australia could be knocked offline for a bit today. But don’t panic – the curtailment event (if it occurs) will be a feature, not a bug.<\/p>\n

Uptake of commercial and home solar in South Australia<\/a> has been phenomenal, with more than 355,000 PV systems installed across the state to date. The impact of all this solar energy goodness was very apparent on the weekend, when on Sunday afternoon at 1PM, rooftop solar alone met 92% of South Australia’s electricity needs.<\/p>\n

Events such as this will become increasingly common, particularly during spring when mild temperatures and clear skies combine with reduced home and building heating and air-conditioning demand.<\/p>\n

But sometimes you can have too much of a good thing. Excessive generation or too low grid demand can cause electricity system instability – and that is a Very Bad Thing. This is why there has been a requirement since September 28, 2020 that all new solar installations in South Australia can be remotely disconnected (and reconnected) if the need arises, meaning most of these households will be sourcing their electricity from the mains grid during such an event.<\/p>\n

The introduction of remote solar disconnection – to be used as a last-resort measure – created some angst and misinformation, which\u00a0 SolarQuotes Founder Finn addressed in his explanation of remote solar shutdowns here<\/a>.<\/p>\n

“Elevated Risk” Of Solar System Disconnection Today<\/h2>\n

As far as I’m aware, the capability has been barely used since it was introduced. But that brings us to today when it may be called into play.<\/p>\n

The situation was flagged last night by WattClarity’s Paul McArdle<\/a> after the Australian Energy Market Operator (AEMO) published a notice at around 8.30PM warning of the potential.<\/p>\n

Market notice 102367<\/a> states there is an elevated risk of the ” contingent disconnection of Distributed PV (DPV)” from 10.30 this morning until 2 this afternoon. The notice states:<\/p>\n

“Maximum DPV generation forecast by the Australian Solar Energy Forecasting System 2 (ASEFS2) is 1307 MW at 1230 hrs and the secure ASEFS2 generation limit for the forecast operating conditions is 1181 MW.”<\/p><\/blockquote>\n

.. and this could mean among the actions:<\/p>\n

“… an instruction to maintain DPV generation below a secure DPV generation threshold.”<\/p><\/blockquote>\n

This would mean remotely disconnecting a bunch of rooftop solar systems from the grid, which will be remotely reconnected once the situation has passed.<\/p>\n

This actually happening isn’t a done deal – the latest weather report indicates “mostly sunny” conditions; so there may be a bit of cloud around or other factors avoiding the need to do so. And if remote disconnection does happen, it shouldn’t be for long – not necessarily the full 10.30AM – 2PM timeframe.<\/p>\n

As mentioned, the remote disconnect potential only applies to new systems installed since September 28, 2020. Even in the event of a solar shutdown instruction being issued, perhaps not all systems will be remotely disconnected.<\/p>\n

As far as I’m aware, solar owners who have installed systems since this requirement was introduced to be least affected would be those with home batteries<\/a> featuring “level 3” backup capabilities<\/a>. Their solar power systems should disconnect from the grid but continue to supply the home and charge the battery.<\/p>\n

As an owner of one of the potentially affected systems (and not having a battery), I’ll be keeping a close eye on my solar system monitoring today during the 10.30AM to 2PM timeframe. I’ll update this post if I spot anything unusual, or with any AEMO updates on the situation.<\/p>\n

UPDATE 8.10AM:<\/strong> AEMO’s latest notice<\/a> still indicates potential for remote disconnection today.<\/p>\n

UPDATE 10.45AM:<\/strong> At this point, all appears to be well – but I noticed on OpenNEM<\/a> that wind generation in SA has dropped off dramatically in the last couple of hours. Whether wind power is being curtailed, or it’s just dropped off due to conditions isn’t clear.<\/p>\n

UPDATE 11.18AM:<\/strong> AEMO has cancelled<\/a> the Distributed PV Contingency 2 (DPVC2) [and Distributed PV Contingency 1 (DPVC1)] in SA. All over, red rover.<\/p>\n","protected":false},"excerpt":{"rendered":"

A bunch of rooftop solar power systems in South Australia could be knocked offline for a bit today. But don’t panic – the curtailment event (if it occurs) will be a feature, not a bug.<\/p>\n","protected":false},"author":17,"featured_media":66667,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[678],"tags":[],"class_list":["post-66666","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-solar-battery-news","entry"],"acf":[],"yoast_head":"\nPlug To Be Pulled On Some Rooftop Solar In SA Today?<\/title>\n<meta name=\"description\" content=\"A bunch of rooftop solar power systems in South Australia could be knocked offline for a bit today. 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A new report authored by the Institute for Sustainable Futures (ISF), the School of Photovoltaic and Renewable Energy Engineering (SPREE) at UNSW and\u2026","rel":"","context":"In "General Solar & Storage News"","block_context":{"text":"General Solar & Storage News","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-battery-news\/"},"img":{"alt_text":"Rooftop solar power in Australia","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2019\/06\/australia-rooftop-solar.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2019\/06\/australia-rooftop-solar.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2019\/06\/australia-rooftop-solar.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2019\/06\/australia-rooftop-solar.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2019\/06\/australia-rooftop-solar.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":88561,"url":"https:\/\/www.solarquotes.com.au\/blog\/solar-xmas-australia-mb3081\/","url_meta":{"origin":66666,"position":1},"title":"A Very Solar Xmas Day In Australia","author":"Michael Bloch","date":"December 26, 2024","format":false,"excerpt":"Rooftop solar panels across Australia did their bit to support festivities yesterday with clean energy, and made a significant contribution to meeting overall mains grid electricity demand. Solar power systems were not only producing electricity and considerable bill savings for their owners, but also exporting energy for use by others\u2026","rel":"","context":"In "General Solar & Storage News"","block_context":{"text":"General Solar & Storage News","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-battery-news\/"},"img":{"alt_text":"Rooftop solar in Australia - Xmas day","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/12\/solar-xmas-australia.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/12\/solar-xmas-australia.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/12\/solar-xmas-australia.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/12\/solar-xmas-australia.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/12\/solar-xmas-australia.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":20886,"url":"https:\/\/www.solarquotes.com.au\/blog\/solar-statistics-australia-mb0550\/","url_meta":{"origin":66666,"position":2},"title":"March Australian Rooftop Solar Installations Break Record","author":"Michael Bloch","date":"April 19, 2018","format":false,"excerpt":"March rooftop solar power system installs in Australia represented the highest monthly capacity total ever - 127 megawatts - enough to power the equivalent of 36,710 homes says Green Energy Markets. Their latest Renewable Energy Index also indicates installations for the first three months of this year are 50% higher\u2026","rel":"","context":"In "General Solar & Storage News"","block_context":{"text":"General Solar & Storage News","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-battery-news\/"},"img":{"alt_text":"Solar installations in Australia during March","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2018\/04\/australia-solar-installations.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2018\/04\/australia-solar-installations.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2018\/04\/australia-solar-installations.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2018\/04\/australia-solar-installations.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":88641,"url":"https:\/\/www.solarquotes.com.au\/blog\/australia-solar-2024-mb3086\/","url_meta":{"origin":66666,"position":3},"title":"Australian Rooftop Solar’s Contribution In 2024 Hits New Record","author":"Michael Bloch","date":"January 2, 2025","format":false,"excerpt":"How much did rooftop solar power exports contribute towards mains grid consumption in Australia's National Electricity Market (NEM) in 2024? Take a guess and then see the answer. Now the calendar has flipped over to 2025 and following on from our report on Xmas day 2024 solar performance, I thought\u2026","rel":"","context":"In "General Solar & Storage News"","block_context":{"text":"General Solar & Storage News","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-battery-news\/"},"img":{"alt_text":"Australian rooftop solar in 2024","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2025\/01\/rooftop-solar-2024.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2025\/01\/rooftop-solar-2024.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2025\/01\/rooftop-solar-2024.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2025\/01\/rooftop-solar-2024.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2025\/01\/rooftop-solar-2024.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":67756,"url":"https:\/\/www.solarquotes.com.au\/blog\/sa-solar-shutdowns-mb2719\/","url_meta":{"origin":66666,"position":4},"title":"SA Rooftop Solar Shutdowns – What’s Happening Today?","author":"Michael Bloch","date":"November 17, 2022","format":false,"excerpt":"Some South Australian solar owners may see their systems remotely shut down at times again today as work continues on electricity infrastructure repairs after Saturday's storms. Just to briefly recap, storms that rolled through South Australia on Saturday resulted in widespread blackouts; particularly in the Adelaide and Yorke Peninsula regions.\u2026","rel":"","context":"In "General Solar & Storage News"","block_context":{"text":"General Solar & Storage News","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-battery-news\/"},"img":{"alt_text":"Solar system shutdowns in South Australia","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2022\/11\/solar-shutdowns-sa.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2022\/11\/solar-shutdowns-sa.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2022\/11\/solar-shutdowns-sa.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2022\/11\/solar-shutdowns-sa.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2022\/11\/solar-shutdowns-sa.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":97168,"url":"https:\/\/www.solarquotes.com.au\/blog\/rooftop-solar-performance-mb3355\/","url_meta":{"origin":66666,"position":5},"title":"Rooftop Solar Taming Australia’s Summer Sizzle","author":"Michael Bloch","date":"January 12, 2026","format":false,"excerpt":"Air-conditioners were working hard during the recent heatwave that affected large parts of Australia \u2014 and rooftop solar power systems did their bit to alleviate strain on the mains grid while making air-con use greener and cheaper. 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From about 4.30AM last\u2026","rel":"","context":"In "Solar Panels"","block_context":{"text":"Solar Panels","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-panels-2\/"},"img":{"alt_text":"Rooftop solar performance during heatwave","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/01\/rooftop-solar-performance.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/01\/rooftop-solar-performance.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/01\/rooftop-solar-performance.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/01\/rooftop-solar-performance.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/01\/rooftop-solar-performance.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/posts\/66666","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/comments?post=66666"}],"version-history":[{"count":7,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/posts\/66666\/revisions"}],"predecessor-version":[{"id":66701,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/posts\/66666\/revisions\/66701"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/media\/66667"}],"wp:attachment":[{"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/media?parent=66666"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/categories?post=66666"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/tags?post=66666"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}