What is their fire suppression setup like??? Granted I guess they could be doing pumped hydro storage lol

If they're in a rural / industrial area setting it could quite literally be a fire break around the battery area (bare dirt and no overhanging trees).

Fire control in Australia is first and foremost about limiting spread - the bush in Australia goes off if it catches hard.

"Mini" pumped hydro is a thing here (in places): https://www.abc.net.au/news/2024-12-01/australian-first-mini...