Why is the net meter export readings less than the inverter energy generation?
Readings taken between Nov 20th and Dec 1st = 11 days
T1 - 83 kwh
T1 - 19 kwhT2 - 44 kwhT3 - 42 kwh
Inverter Energy reading - 108 kWh
Net Meter export reading - 84 kWh
Where did the remaining 24 units go?
A Net Meter is a bi-directional energy meter that records both Import from the Grid and Export of Energy to the Grid.
The inverter energy meter records the energy generated by the Solar Power Plant.
A solar power plants generates energy during the day. It follows that any export of energy to the grid can happen only during the day. Consumption during the day is also therefore met partially or totally by the generation.
Export during the day = Generation - consumption during the day
From the above equation it is clear that Export will always be less than or equal to generation.
In our case, we can assume 24 units was consumed during the day for the 11 days i.e = 108 (Generation) - 84 (Export during the day)
How can this be validated?
1. Either keep track of day energy consumption
2. Or make assumptions based on historical consumption
- 132 units consumed in 11 days
- IP T1 = Average consumption - ( IP T2 + T3)
= 132 - ( 44 + 42)
= 46 - Delta between the estimated consumption during day (46 units) and actual reading IP T1 (19 units) is 27 units.
T1 - 6 am - 6 pmT2 - 6 pm - 10 pmT2 - 10 pm - 6 am
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