Do you want to test only 120 appliances or 240/206 as well?
I have the most basic Kill-A-Watt. It mostly works. The down fall of it is, it can only do 120 plugs and it doesn't have memory so when you unplug it the information goes away. Usually that is fine but in places where you can't easily see the screen it is a problem. And I can't use it to measure the capacity of my battery backup because the inverter automatically shuts off the power once the battery voltage gets too low.
A clip on power meter could be better if you want to measure higher voltage power consumption.
Killawattt gets good reviews. +1 for just looking at starting and running watts. 75 - 80% is a good load with everything you want running. Some things take a lot to start like deep well pumps. Factor in that generators loose power as the age and loads tend to use more as they age
Yes but he wanted to read it in real time. The one I linked is a good idea and it can help people like me who have very high KW cost look for ways to lower my bill. I am on a Pay the same amount every month and it just jumped $40 a month. I don't see anything at my house that has changed.
Not quite $300 a month is lot.
I wanted to add Solar but I have several Trees that would have to come down an at about $1500 to 2000 a tree that,s not happening.
Just search Amazon for 'electricity usage monitor' - there are a lot of options available, including ones that connect to WiFi and allow you to track in real time. Here's one that handles up to 15A and send the data to your smart phone: