Skip to main content
M
Rank 1
maryjay
Rank 1
October 16, 2022
Solved

The solar pv inverter data includes a "Pload" column of non cumulative figures at 5 minute intervals. What are those figures & how can I get the total KWH consumed for the day please?

  • October 16, 2022
  • 23 replies
  • 662 views

Most of the data I download from the on line monitor for my Luxpower Hybrid inverter makes sense. The data includes total figures for the day for solar production, power imported from and exported to the grid etc. but not a total self-consumption figure.

 

When I log onto the monitor there is a headline display of some daily totals. These DO include consumption for the day up to the point in time at which I am looking at the monitor. That’s fine as far as it goes but I don’t wish to stay up until 11.55pm every day to check how much I have used.

 

There is a “PLoad” column in the data. It shows non-cumulative figures at 5 minute intervals eg around 150 to 250 for background use like lights, fridge etc and about 2500 when something like the oven is on, so it looks like watts. However yesterday, for example, the total for that column was 95414. By comparison at 9.19 pm when I looked at the monitor the total consumption was 8.1 KWH. So what is PLoad showing? What units is it in? and how can I get a daily self-consumption figure please?

    Best answer by BPLightlog

    @maryjay you do realise that there’s a history tab for the data so that you can revert to previous days to see power consumed?

     

    I agree that it could be easier to follow but I’ve taken to loading the data into a spreadsheet to look more closely. 
    You just need to make sure that you look at the import total from the grid presuming that you want to look at what you are paying for, otherwise there’s a ‘consumed’ total right in the app showing for each day. From your data shot, pLoad refers to the load power at that point in time - remember that LuxPower only logs the instantaneous info at 5 min intervals  

     

    23 replies

    Show previous replies
    M.isterW
    Rank 6
    M.isterW
    Rank 6
    May 27, 2023

    Yes, that's correct. However, this is measured using a CT clamp and they aren't 100% accurate.  So it's no surprise that the figures don't match your electricity meter.

     

    How far off are they?

    1992 4 bed detached house. Solar PV + battery, Zappi EV charger, Mitsubishi Ecodan ASHP and i-life2 fan assisted radiators.... No gas 😊
      D
      Newcomer
      Dcann
      Newcomer
      May 27, 2023

      Thanks both, that's good news. It is as I assumed but good to get clarification.

      BP I've added 2 further screenshots. So click feed in energy give totals consumption (at the moment) of 33 KW but the green consumption tab shows 35. Is one more accurate than the other. Obviously with the amount we consume, it can make a difference.

      As it is a dumb meter the export doesn't help. I think the wheel turns backwards but not the numbers although without watch constantly on a good day!

       

      my mani query has been answered though so thank you.

      Mister W thanks. I'm not too sure I'll have to calculate them accurately and Take exact readings between a period. I think the biggest thing is to try and reduce usage.

      D
      Newcomer
      Dcann
      Newcomer
      May 27, 2023

      *34.3 compared to 35.3* total consumption 

      M.isterW
      Rank 6
      M.isterW
      Rank 6
      May 27, 2023

      That's pretty close for a CT clamp. Ours can be 10% out.

      1992 4 bed detached house. Solar PV + battery, Zappi EV charger, Mitsubishi Ecodan ASHP and i-life2 fan assisted radiators.... No gas 😊
      BPLightlog
      Super User
      BPLightlogSuper User
      Super User
      May 27, 2023

      Thanks both, that's good news. It is as I assumed but good to get clarification.

      BP I've added 2 further screenshots. So click feed in energy give totals consumption (at the moment) of 33 KW but the green consumption tab shows 35. Is one more accurate than the other. Obviously with the amount we consume, it can make a difference.

       

      So the 33kW is what you are paying for (sounds high) compared to 35kW the property is using. Although the figures aren’t completely accurate, they are indicative. 
      At that point then, your solar has provided around 2kW unless the monitoring is not connected correctly

      Bring me Sunshine ~ E&E {Solar PV, Battery Storage, Hybrid EV, ASHP and Home Assistant automation}
      D
      Newcomer
      Dcann
      Newcomer
      May 27, 2023

      Has the solar not provided 1000KW? Total import 2208 total usage 3250

       

       

      D
      Newcomer
      Dcann
      Newcomer
      May 27, 2023

      Sorry, read that wrong, you meant 2KW today. Thanks 

        D
        Newcomer
        Dcann
        Newcomer
        May 27, 2023

        30 odd KW is high by 9am! Correct.

         

        usage was around 6KW per hour between 1 am and 5.30 am then drops considerably.

        I'll need to check if there's a cannabis farm tapping off us 🤦‍♂️

         

         

        BPLightlog
        Super User
        BPLightlogSuper User
        Super User
        May 27, 2023

        That looks like a heater or something significant at 6kw

        Bring me Sunshine ~ E&E {Solar PV, Battery Storage, Hybrid EV, ASHP and Home Assistant automation}
        D
        Newcomer
        Dcann
        Newcomer
        May 27, 2023

        Yes we have a swim spa/large hot tub which is the reason we got the panels in the first place. Consumption increased about 50% with it. Not too sure why it ramps up at that time though. It was used last night late on so explains some of it, cover off, , keeping the temp up but we get quite a few peaks around that time when it's not been used. Bit weird.

        Show more replies
        Terms & ConditionsAccessibility statement

        OVO Energy Ltd, Floor 5, Crescent, Temple Back, Redcliffe, BS1 6EZ, (Company no. 06890795) registered in England and Wales.

        OVO (S) Gas Limited is registered in England and Wales (Company No. 02716495) at Floor 5, Crescent, Temple Back, Redcliffe, BS1 6EZ.

        OVO (S) Gas Limited is part of OVO Group Ltd