This is the photo I wanted to post right at the very beginning, but I could never get the exposure right, either the meter or the display would be under/over-exposed and unreadable.
Anyway, this morning (6.05.2020), at 7.50am, I got it right.
In the picture, you’ll see the meter displays the correct rate - rate 1 (overnight - 8.20p/kWh) which is correct for the time of year - applies 12am-8.00am
The “in house display” however is displaying the wrong rate price for the time of day (it changed from overnight (rate 1) to off-peak (rate 3) at 7am). It is showing the off-peak price (Rate 3) of 12.18p per kWh.
For 4 hours of any 24 hour period my IHD displays incorrect pricing information:
11pm rate 1 should be rate 3
7am rate 3 should be rate 1
4pm rate 2 should be rate 3
7pm rate 3 should be rate 2
Since we are told that the whole idea of the IHD is to help us save money, this is a cause of concern because if I had not realised right at the start, I could have run the risk of using high rate electricity thinking I was on a lower rate.
I reported this to support on the 30 March 2020, but the issue remains unresolved.