LEDs are the best way to grow for the "everyday Rasta". LEDs offer lower wattage individual lamps that can be easily installed on a dedicated 15A/120v circuit.
when ever possible i like to isolate my grow spaces on a dedicated circuit. my flower room runs that way.
the veg room is a disaster so i had to take measures at the room itself for safety precautions and use a fused dropbox. i'd recommend them to anyone running a tent or small space on a shared circuit.
Professionals and commercial growers get certain benefit from HID/HPS, still, even in these days of high utility costs (higher yields and potency - supposedly).
legal indoor commercial grows are all 100% led now. there are a few nearby i've been to and have friends in the industry. now that they are allowed greenhouse grows there has been movement in that direction as well.
Nothing is foolproof. I like that people are using wi-fi and internet connections with cameras to monitor their grows. That simple measure at least allows one some "peace-o-mind" when not inside the grow room.
doesn't prevent the issue but it can help.
i know someone who watched a shed go up in flames and a garden greenhouse get damaged in real time before anyone showed up to stop it. it simply happened too fast. they were lucky the shed was isolated and no other buildings caught.
it was smoldering rubble when the fire dept got there.
i had friends die in a house fire in a rural area just outside of the city. no one knew for two days until someone went to find out why their phones didn't work when called. there was nothing left.