The big problem with Octopus's smart meter - and maybe all smart meters
- is that the IHD doesn't give a detailed graph or usage figures, *with a scale*, to show how your usage varies throughout the day. There is a bar chart of usage for each day of the last week, but they only show a numerical value for the highest bar, and you have to interpolate all the other days' usages. A table as well as a bar chart would be so much better.
And the daily (midnight to midnight) figures take forever to be reported on the Octopus app and website - well into the following day, and sometimes into the day afterwards.
I found an app called geoHome which can talk to my IHD and give me current usage, graph of usage throughout the day and midnight-to-midnight usage shortly after midnight (when on GMT) or after
0100 (when on BST). However... this app has a very serious flaw which geoHome never managed to get to the bottom of: after I reported all the evidence they asked for, they went quiet and didn't respond when I asked for a progress report. The bug was this: during GMT periods, it reports the day before yesterday's gas figure as being yesterday's (and yesterday's figure is not reported), and so on for all preceding days. Electricity usage is fine. Both are correctly reported during BST periods.
So during the winter, geoHome doesn't show me gas usage any earlier than the very delayed figures from Octopus themselves. I tend to read the cumulative reading at about 1000 each day and subtract those to give an estimate of daily usage, and then correct that figure in my spreadsheet once the Octopus figures finally get reported.
I'm not sure what Octopus do with the data between midnight which is the cutoff for the previous day's usage and maybe 1200-1800 when they finally report that day's usage.