The Victorian Country Fire Authority (CFA) said on Monday morning that the fire has subsided significantly, however it is still not yet under control.
The Neoen battery storage plant, which incorporates Tesla megapack products, suffered a fire outbreak in one of its Tesla Megapack units at the end of last week, which then proceeded to burn across the weekend.
The unit began to first generate power on Thursday at 6:15pm AEST according to analysts with Global Roam.
Over 35 response vehicles and a team of over 100 specialists responded to the site over the weekend, where the fire was left to burn following logistical water access difficulties under guidance of chief fire officers onsite.
Toxic smoke warnings were published by the Victorian environmental health and emergency response teams on Friday and Saturday, and extended across Sunday, as a number of materials used in the battery products produce harmful fumes when combusted.
The cause of the fire is undetermined and will be investigated once it is safe to do so, according to the CFA.
AEMO spokespersons told reporters there were no implications for Victorian electricity supply caused by the fire, confirming that the battery was isolated and disconnected from the National Electricity Market.
"We can confirm the incident has not impacted electricity supply," the regulator said.
"We continue to work with the asset owner, Victorian electricity network businesses and relevant authorities in response to the incident."
Neoen Australia Managing DIrector Louis de Sambucy told reporters on the weekend the company was working alongside its partner Tesla to manage the situation, and were providing full access and cooperation to emergency services workers.
The fire broke out on site only two days after the project was officially registered with AEMO, which happened on Wednesday 28 July, some 200 days after construction first began.
The project was announced by Neoen late last year, after signing a System Integrity Protection Scheme with the Australian Energy Market Operator, and received funding from the Clean Energy Finance Corporation (CEFC) in February this year.
