[simoncion]

> [My family of four] were at 1500kwh for the whole year...

Weird. Looking at my past several bills, my monthly usage is fairly constant; ~450kWh per month. So, (if my math is correct) that puts my annual usage at ~5400kWh.

> I can't see it, even with heating, as it's California.

I've no idea where OP is, but there are inland parts of the state that get dangerously hot in the summer. Cooling could be a big concern. Plus, rental housing in the state is often poorly maintained, so all that lovely conditioned air could very well be leaking out all over the damn place.

[rsynnott]

> Weird. Looking at my past several bills, my monthly usage is fairly constant; ~450kWh per month. So, (if my math is correct) that puts my annual usage at ~5400kWh.

That’s really quite a lot if you don’t have electric heating and cooling. It’d be worth trying to figure out where it’s going.

[simoncion]

This is probably a long shot, but do you have any recommendations for power draw monitors that plug into a US outlet and report power draw either over plain old serial port, or USB?

Every couple of years I look around a bit for something suitable, but have been unable to find anything that fits the bill, looks like it's not totally garbage, and isn't priced in the neighborhood of lab-grade measurement equipment.