Protect yourself and prepare for power outages in coming bushfire season

As the current summer season approaches in Australia, we are receiving more warnings of a possibly severe bushfire season. With memories of the disasters of 2019 – 2020 many people still remember being without power for days and weeks due to power lines being brought down and the dangers of reconnecting the power grid.

This threat of bushfire is becoming an increasing and more serious and long-lasting reality every year, both in Australia and overseas.

Power supply companies are turning off power earlier, particularly in areas with above ground powerlines, when there is a threat of bushfires, to prevent their infrastructure causing more fires.

Particularly in rural areas, loss of power also affects access to water, as electric water pumps no longer work. This can be devasting to livestock as well as humans and often means there is no longer access to water to fight fires.

With the interconnectedness of our current power supply this also means that a problem in one area can affect power supply in multiple other areas that may have not been affected by the original bushfire.

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Electric bus battery explosion fires

As the world moves towards electrifying the transport system with the utilisation of electric cars, scooters, busses, trains etc. we need to make sure we take into account the inherent dangers of lithium-ion batteries.

It is not uncommon for lithium-ion batteries to catch fire while charging whether they are in phones, computers, work tools, house batteries or electric vehicles. There are many instances of houses and businesses being burnt due to these fires.

One of the issues with lithium-ion battery fires is the temperatures the fire will quickly get to (excess of 1000oC) and the speed with which the fire will spread to anything adjoining it. The biggest issue is that fire brigades are unable to easily extinguish a lithium-ion battery fire. All they can really do is protect surrounding assets to prevent the fire spreading.

6 buses destroyed in UK 230522 – 2 were electric – https://www.dailymail.co.uk/news/article-10842785/Bus-explodes-Potters-Bar-bus-garage-engulfed-flames-six-vehicles-damaged-fire.html. 2 electric and 4 non-electric busses were destroyed. Believed to have started in one lithium-ion battery exploding while being charged. Fire quickly destroyed that bus and spread to adjoining busses and busses were alight within minutes when firemen arrived. Plumes of toxic smoke could be seen 18 kilometres away. Onlookers likened the ‘unbelievable noise’ to that of an explosion. There were no reported injuries.

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Tesla Victorian big battery fire

The Tesla Victorian big battery fire at Moorabool near Geelong in Victoria is another example of why smaller community-based neighbourhood batteries are a preferable way forward for making the energy supply more renewable. With smaller installations that are more spread out and serve the community in which they are based there is less likelihood of larger electricity supply interruptions when a large power supplier has issues and has to be taken off line for safety reasons.

The 300MW/450MWH capacity big battery comprised of Tesla batteries in multiple shipping containers was registered with AEMO on 28th July 2021. During testing on 30th July 2021 one cell failed and caught fire and quickly engulfed the container in which the batteries were housed. This then spread to another container which was also destroyed. Luckily fire fighters were able to keep other containers cool enough so that they didn’t also catch fire. The blaze was finally extinguished 4 days later. 150 firefighters and 30 fire trucks and support vehicles attended the fire along with many other multi-agency specialists.

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