Nonsensical target for Power Move Plus

I’m not sure you’re right there. I just compared a few figures from yesterday morning:
  

More ups than downs in that sample. If you can tell me why 0.025 becomes 0.03 while 0.015 becomes 0.1, I’ll be very happy 😊

Perhaps there’s a fourth digit somewhere 

Just to clarify, as I have earlier stated, my complaint to OVO has.been fully justified.  Today  they recognised “errors” had been made and have credited £50 to my account.

Full marks to the Customer Service guys at OVO They acted very swiftly to answer my emails and obviously carried out a full investigation of the  facts. You have to respect that, and I will be staying with. OVO.

 They

Wow, I've not seen that suggested before.

It's always an interesting mathematical question whether 0 5 should be rounded up or down. Pick your mathematical system and take your choice?

TBH though if we are into the realms of 4 decimal places vs 4 significant figures - the difference is not going to impact in any significant way on the Power Move percentages

0.5 should always be rounded up I was taught ✏️

@Firedog 

@BPLightlog 

@Nukecad 

I sometimes see discrepancies between the following figures, and not just rounding up/down:

1. Total daily figure on app to the total in the half hourly breakdown

2. The daily figures can also be different again on the monthly part of the app.

3. Different daily figures when logging into the website too.

When you are a low user and close to the target these discrepancies can make a difference to the final % figure and your £15.

Now that I'm using a light in a room I'm finding I'm closer to the target with little to no change in what i was doing in Sep.

It would be nice to see exactly the same figures in all locations, or at least one location for the consciously detailed minded, that Ovo work too.

Is that possible?

That’s what the tax man says. There’s also the so-called ‘bankers’ rounding’, which relieves part of the bias that always rounding 0.5 up introduces (this system rounds 0.5 to the nearest even number, so 0.5 > 0, 1.5 > 2, 2.5 >2, 3.5 > 4 etc.). Neither of these explains why 0.025 becomes 0.03 while 0.015 becomes 0.1. I suspect it’s a result of the way decimal numbers are stored in binary systems.

Possibly not. 
Details on the app - and possibly the web - are estimations and not used for billing or other significant purposes (including Power Move I would suggest).

This is probably why it takes quite a while to validate figures. 
I agree that it would be useful to see for yourself so that the figures can be self validated but I’m not sure that is possible in this situation .. 

Just for context 

The daily figure on the monthly tab on the usage page is calculated from the registers on your smart meter. These are the figures on the meter reading page on the website

https://account.ovoenergy.com/meter-readings/history/electricity

The 30 min consumption data is different. This is stored on your smart meter as consumption amounts every 30min

The 30min data isn't added up to make the daily amount on the meter or by ovo.

There can be a difference for a variety of reasons for example a data transmission issue with one of the 30min data slots.

We aren't  currently billed using the 30min data, or in fact anything on the usage page, only what is on the meter reading page.

I think you’ll find that the daily total figures are derived from the meter readings - today’s less yesterday’s gives yesterday’s usage. The total of a day’s half-hour usage quantities should be very close to that figure, assuming that both are calculated to the meter’s degree of reporting accuracy - nowadays the nearest whole Wh.

I have been keeping track of my half-hourly usage figures since my new meter was installed in September. If I add up every one of those 2618 numbers (running to midnight last night), I get 160.582 kWh. The meter readings reported on the website (there are two each day, for peak and offpeak usage) are 138.831 and 21.754, totalling 160.585. I can live with a 3 Wh discrepancy (0.002%).