Keep hearing adverts about companies providing them for "free". They are not being provided for free, offgem has given them permission to put up bills to cover the costs of these. They are not that useful, I have an owl device that took seconds to install and gives much of the same information for 20 pounds. Smarts cost hundreds to install (I heard 200 on radio 4) and would allow people to cut off the supply remotely or limit it. Plus g4 have been given the contract to mine all the data people with smarts will supply to them.