Load disambiguation is an interesting topic, that a number of capable teams have worked on for about 30 years. A few products have been around for a while, and they do provide some workable functionality. The snag has always been that there is a big gulf between what people are lead to expect, and what is achievable. It started with people noticing that its easy to see when various appliances switch on and off, by looking at a simple plot of household power consumption versus time. The snag is that getting from that observation to a solid product that reliably disambiguates more than a handful of the house's biggest consuming appliances is really tough - in fact, its probably impossible - and its getting tougher all the time, as appliances get more "electronic" in their load characteristics.