If you want to get a bit more technical, at least based on residential solar technology in the U.S....
The inverters are connected to the internet. Not the solar panels. Nor the batteries. Thus, they're the part that'd be hacked into from the internet. The inverters are also the charge controllers. Thus, hacking into them can cause overcharging the batteries.
My inverters continuously read the volts and amps coming from the batteries to determine how charged they are. Thus, my inverters slow down the charging when the batteries near full charge. (Very much like the battery charger I use to charge my lawnmower battery.) Plus, the solar batteries have software on them (BMS = Battery Management System) to help throttle down the charging and discharging if necessary. In order to hack into my solar system to cause a fire, you'd have to hack into the inverters, trick them into charging more than the batteries can handle, and hope the batteries' BMS doesn't kick in to protect the batteries.
Of course, the terrorists may have had cheaper batteries with no BMS to protect them. Or Israel was able to intercept them physically during packaging or transportation like they seemed to do with the pagers.
” Or Israel was able to intercept them physically during packaging or transportation like they seemed to do with the pagers.”
I don’t think that happened in any of the cases and is just a cover story. This was an energy weapon:
“Al Jazeera reported, “Several blasts took place simultaneously, Hashem said, similar to what happened on Tuesday. “But this time, it was mostly walkie-talkies or radios [that exploded],” he said, adding that reports suggested that solar devices >and some batteries in cars< also exploded. Lebanon’s official news agency reported that home solar energy systems exploded in several areas of Beirut.”
Did they sneak in and switch car batteries?
Yeah that’s what I meant :-)