The Three Phase WiFi energy meter WEM3080T supports Net Metering Mode in new version.
Welcome to discuss about the NEM (Net metering function) here https://imeter.club/topic/281
Here is an example to explain about NEM(Net Metering Mode).
If you install a WEM3080T in a three phase electricity system, assuming that the power in each phase remains constant within one hour as below, and it is importing power from grid on phase A and B and meanwhile exporting power to grid on phase C,
P1 = 2KW (power of phase A, importing power from grid) P2 = 1KW (power of phase B,importing power from grid) P3 = -3KW (power of phase C, exporting power to grid)
and also assuming the power tariffs are as below,
Imported power tariff =0.3 USD/kWh
Exported power tariff =0.1 USD/kWh
we can compare the billing within one hour in normal mode with that in net metering mode.
| Grid Consumption(kWh) | Grid Electricity Bill | Exported Energy(kWh) | Income of exported electricity | Balance | |
|---|---|---|---|---|---|
| Net Metering Mode | 0 | 0 | 0 | 0 | 0 |
| Normal Mode | 3 | 0.9 | 3 | 0.3 | -0.6 |
It needs two steps if you want to use the NEM function in IAMMETER.
Normally, the 3 phase energy meter would output a JSON format data, the datas field includes three arrays that represent 3 phase energy data. After the NEM (net energy metering) function is enabled, there will be a fourth array that represents the NEM measurement result, like the below pics.
After below steps, the NEM mode is switched on.
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