Been a few weeks into our big solar project and beginning to get it all sorted . The story can be told by the contact energy smart meter graphs that give me an hourly breakdown of electricity consumption . I do not have an import export meter and when it is fitted I will be able to get paid for the power we return to the grid. For the moment I have been happy to get the data from the old new smart meter.
This was after we had the solar panels installed . It means that during a normal sunny type day the power use is very small. Unfortunately power consumption peaks in the early evening and early morning so power is still being purchased from the grid. This however reduces consumption from the 40 + days to about 13 KWH on this graph.
This is what it looks like now — we only will be paying for about 2 kWh per day . I estimate that we will be exporting about 10 – 25 KWH back to the grid and even with the miserly rate offered by contact energy we will more than offset the meager bill for purchased electricity.
Our battery storage system runs the upstairs part of the house — fridge freezer , Hot water and coffee machine😉 , Entertainment system and power points.
So what — you ask — is the little peak about midday?
The batteries run the house from 6 pm in the evening till midday the following day ( 16 hours) The inverter then stops drawing down on the battery and switches to mains supply which is connected to the solar too. It begins a charge cycle which pushes 50 amps back into the storage. A little spike occurs if the day is still a bit cloudy at this switchover time.