The UK Smart Meter rollout promises much on the surface but delivers much less than you might expect, especially if you are interested in data analysis. The 'In Home Display' (IHD) shows pretty charts in real time & some crude historical reports but offers no way to get the raw data out. If you're lucky your energy supplier might give you the data via an API or you can get it via a trusted third party but the data granularity (30 mins) is way lower than the meter can actually report (15 secs).
The solution to this problem is to get hold of a 'Consumer Access Device' which connects to the meter and provides the raw data in some manner (WiFi w/ cloud). There are very few CADs actually available to buy and they are somewhat expensive considering what they do. Rather wish the IHD and CAD would have been the same device, as adding a WiFi feed from the IHD would have cost little extra. Admittedly the vendors would then be in the software upgrade game for 10s of millions of devices.
@penguin42 in theory the geo IHD that I have has a hidden expansion port taking a WiFi module, but I'm practice the vendor has been sold out of the WiFi add-on for at least 18 months so I assume it's discontinued. Someone sufficiently skilled and motivated could probably hack it I guess
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