Well, a typical household....
TV = 100-500W
HIFI = 50W-800W
PC = 250W-400W
Washing Machine = 800W-1200W (per wash)
Microwave = 600W-1000W

You get the idea, the electrical company cannot see the appliances, they can only see the power consumption, with my growroom, im using 250W a hour on the light, thats running 18hrs a day, my extractor fan takes about 25w a hour, thats on for 6hours.

You got nothing to worry about unless you got about 20 600W hps lights running, then they will know something is going on.
Hope this helps,
Dude0