Bring back the online account line bar comparison of usage for previous month/year/day

Your change of ISP would be unrelated - ISPs just send you stuff raw pretty much exactly how it arrives from the origin server... Unless it’s a dodo one that tries to modify everything because that’s happened before...

We have in the past seen a similar issue with the Power Move links not displaying.

In that case it was changes to browser security during a browser update that was causing it, it you dropped your browser security setting down a level then it displayed again.

I’d also try making the page an exception in any Adblocker(s) that you are running, sometimes they will see some things as being ads to block when they aren’t.

Completely agree with this. The text summaries below the graphs just don't give you that immediate, intuitive sense of whether your consumption is spiking compared to the same period last year. Having a direct visual line or bar overlay makes spotting anomalies so much faster.

Right now, when I want to see if the half-hourly data exports match up smoothly between months without guessing at the scale of the charts, I literally have to copy the raw text readouts out of the portal. I've been dropping them into comparetext.app just to quickly highlight the exact numerical shifts line-by-line. It works as a temporary workaround, but having OVO bring back the native comparison lines natively on the graph would be a massive quality-of-life fix for anyone tracking their energy efficiency.

I rather thought this problem had gone away a couple of years ago. Are you saying you don’t see the comparison bars on your usage charts?

June, for me today:
  

  
I have an idea somewhere else, I think, suggesting that these’monthly’ charts should in fact cover six full Monday-Sunday weeks, so that the comparison matches day to day, making it easier to spot changes from one weekend to another, say. Sundays are often big usage days, for example, with everybody at home using electricity all day and often enjoying a roast. I’ll see if I can find it.

Another useful comparison is on the Bill Breakdown - OVO Energy page. Here I normally see no great movement from one week to the next, except recently, when Fridges & Freezers have suddenly taken the lead and show big variations from one week to the next. This is directly proportional to the temperature in the kitchen, which is significantly higher on hot days. This might suggest that the freezer needs defrosting; it made a big difference last time I did it.