My PGE (Bay area) does the same but I'm pretty sure it's an estimate according to house size, # of people, and a questionnaire I filled out such as "how many times do you run the dishwasher per week". Your house pulls electricity through the breaker box or doesn't.
Then again, it's possible different appliances have a specific electrical signatures like +5KWH x 1.5 hours = dishwasher.
> I'm pretty sure it's an estimate
Yeah, I (cynically) assume this utility-provided breakdown data is worthless. There's no way around circuit-level monitoring.
How does it work? Magic?
Not really. Each appliance uses electricity in a unique manner - think of it like an appliance fingerprint. We detect and extract these "fingerprints" and convert the data into useful insights and recommendations.
Then again, it's possible different appliances have a specific electrical signatures like +5KWH x 1.5 hours = dishwasher.