When you’ve installed solar panels into your home, you might want be wondering why a change of meter is required?
Your old meter cannot perform the necessary actions which is keeping track of import and export of electricity.
Import
When the meter is running forward and you’re using energy from the grid, the bars will go from left to right.
This is also known as 'delivered power' coming from the utility. The delivered power is commonly represented with a display identifier of "DEL".
Export
The bars go from right to left when the meter is running backwards and your system is putting energy back onto the utility grid.
This is known as 'received power' by the utility. The received power is represented by a common display identifier of "REC."
Energy by PV system
Your meter will not show the total amount of energy being produced by your PV system, but will show how much electricity has flowed back onto the grid. You can determine this by reading the differential received power values at two different times
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