I also found the website difficult to navigate, especially for the ecm1240 related technical, support and beta things. It used to be even worse, so I guess it is moving in the right direction. Frustrating quirklyness perhaps, but after getting personal assistance from Paul at Brultech I'm don't hold it against them.
The ecm1240 cannot resolve down to the individual device level, it is a current transformer based solution designed to be connected at the consumer distribution box. So how well it works depends on your electrical layout. The system easily can be expanded to operate with 3 units = 21 channels. I have just gathered all my 5 lights circuits onto one channel , cooking devices another, computer/it ring another. For me I cannot discrimatate between freezer/fridge/dishwasher, so in a comprise way it gets me mostly there, not perfect, but I am happy enough. If I really want to I can put a killawatt or the home-made zigbee version on the fridge, no real need for me.
I would like to mix and match plugwise and the ecm but the plugwise is still not out for the uk. But to be honest there are limitations with both approaches anyhow. What I mean is that on a plug based system I would like 20 plugs but economically I would probably be financially squeezed to 8 which isn't really enough.
I do not know how accurate the device is, I am currently doing a manual readings over a two week period to check the kWh, looks good enough for me. I did play about with Owl type ct basic units via rfx but they were very inaccurate because they only measure current, no pf adujstment and no accurate watt, a basic rough indicator. Totally mis-leading for my Neff induction hob. The ecm I think is some kinda super pic controller sampling and integrating watt seconds at 2 or 3 khz, individual readings are stored and totalised on the ecm unit.
I was not really too impressed with the various software, but hey everyone seems to want something different, however, I am using the early beta dashboard which I do like and hope it is swiftly developed further. It is quick for a home web based solution and very responsive running on an old notepad celeron at 600mhz. Interestingly, it uses some brultech engine code, some .net chart controls and asp along with cassini webserver and sqlite3 as the file datastore. Nothing hogging memory or cpu in that combo.
Here is a link from another brultech web page http://220.127.116.11:8080/
Deployment methods are like the software diverse, I have the zigbee and the etherbee it works and could also be used with offsite logging, it has a serial port and at some point I will revert back to this, no particular reason. I had thought about deploying the python script someone wrote on by Qnap Nas (8w embedded linux) but I have little linux/open-source I'm happy with xP embedded and the various microsft technologies.
The first 2 main channels have better quality ct that are clip ons, whereas the next 5 channels have basic single core cts, you can buy extras at 4 for $20 to combine channels.
Nice solution for me, anyone else in europe using one ?