October 7, 2021: Proceedings were issued in Australia on September 22 against the Hornsdale Power Reserve, the 150MW/194MWh Tesla battery installed by French firm Neoen, for failing to provide back-up power for four months in 2019.
The Australian Energy Regulator instigated the proceedings after the market operator AEMO reported the facility ‘did not provide the frequency control services it was paid for’.
“AEMO first brought the alleged conduct to the AER’s attention following a power system disruption at Kogan Creek Power Station in Queensland in October 2019,” the AER said.
“Hornsdale Power Reserve’s failure to be capable of providing the frequency control ancillary services in accordance with its offers and AEMO’s dispatch instructions, over the four months, undermined AEMO’s ability to maintain frequency within the Frequency Operating Standard limits, creating a risk to power system security and stability.”
Each breach of national electricity market rules in Australia can attract a penalty of up to A$100,000 ($73,000), but it is not clear how many breaches the AER is claiming.
Reuters news agency said Neoen was ‘disappointed’ with the AER’s lawsuit, although it did not comment on the allegations.
Fire broke out in the battery in July, with fire fighters taking four days to extinguish the flames.
Safety regulators have now cleared scientists to resume testing the battery, which is being doubled in size to an ultimate 300MW/450MWh.