We have installed a hybrid system on the 9th of February on the first night we still used 3.8kw hrs according to data logged by system. 

After that we did not use any eskom units according to data logged by inverter, we have a prepaid meter and on the prepaid meter we are however using between 1kwh and 0.5kwh a day. 

Now I know this is nothing but I am in data analytics and discrepancies makes me wonder about all the data.  

I'm not the biggest fan on the Luxpower app 🤔 but it is what it is now.  I keep thinking how I would design the app 🤣.

9 hours ago, Josephine said:

We have installed a hybrid system on the 9th of February on the first night we still used 3.8kw hrs according to data logged by system. 

After that we did not use any eskom units according to data logged by inverter, we have a prepaid meter and on the prepaid meter we are however using between 1kwh and 0.5kwh a day. 

Now I know this is nothing but I am in data analytics and discrepancies makes me wonder about all the data.  

I'm not the biggest fan on the Luxpower app 🤔 but it is what it is now.  I keep thinking how I would design the app 🤣.

The APP might round every day and not accumulate the less than 1.

APPs are for free so we accept it as easy. For paid service one could perhaps ask more. 

Imagine if each user asked for the APP to look like they want it. 

From what I have seen I think it is a great APP compared to some other free APPs. 

10 hours ago, Josephine said:

We have installed a hybrid system on the 9th of February on the first night we still used 3.8kw hrs according to data logged by system. 

After that we did not use any eskom units according to data logged by inverter, we have a prepaid meter and on the prepaid meter we are however using between 1kwh and 0.5kwh a day. 

Now I know this is nothing but I am in data analytics and discrepancies makes me wonder about all the data.  

 

Am I right that the discrepancy is between what the app tells you and what the meter shows?

I have had prepaid electricity for years, before I had PV actually. Sigh... life was simple back then.

So once I moved to prepaid solar I started picking up discrepancies on the meter between
1) The movement of the total power that passed through the meter (this is the usual running total that any meter would show)
2) The reduction of the credit amount.

What seems to have happened is that despite my system being set for zero export, it does actually send a little power back to the grid each day. Somewhere inside the meter two parts of it's firmware, the one that handles the credit balance and the one that records how much has passed through the meter, handled this small export differently. The credit would run down faster than the total would go up. Usually the discrepancy was in the order of 1/2 a kWh a week, so I lived with it. It's a few rands in the month, and any solution I could think of was likely to cost more.

Recently that meter failed completely and was replaced. The new meter is a different brand and the discrepancy I describe above is much smaller with this meter - about 0.1 kWh a week (or I have just been lucky).

So check to see if your system is exporting electricity. Some meters see that power but they don't have a way of sensing which direction the power is flowing, and so they show it as power drawn from the grid.

Edited February 18, 20242 yr by Bobster.