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"Big batteries at home could catch fire! They are a risk!"
No: "the findings indicate that the probability of an home storage systems (HSS) fire is very low (0.0049 %) and is 50 times lower than for a general house fire."
"But solar panels catch fire quite often!"
No: "Compared to the generally low fire probability of an HSS, the probability of PV systems catching fire is a further three times lower"
Preprint, RWTH Aachen, https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4995517
@jwildeboer@social.wildeboer.net(cue the naysayers that will point at what they think are methodical flaws in the preprint. I salute you! Please contact the authors with your criticisms as the preprint needs peer review from experts like you! You did read the whole preprint, though? It is quite accessible and goes to great lengths to explain the limits of their methodology)
@jwildeboer Do you know how these numbers have changed over time? Battery densities have increased, which would naively lead to an increase in fire risk, but the safety designs (especially safely venting pressurised hydrogen that can build up when the cells deteriorate) have also improved. I wonder if there was a period when they were very unsafe, or if it was always just a marketing-driven perception.
@david_chisnall @jwildeboer
The huge variability in quality of lithium batteries for smaller emobility devices may contribute. Scooters and ebikes are burning down houses frequently enough for fire departments to be warning of the risk.
BYD hybrids are notorious for catching fire, as are some of the EVs LGChem supplied batteries for.
These are hopefully just teething problems of an industry rapid developing.
For stationary storage, LFP chemistries are extremely safe.