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==== Power plant connection ====

The power plants can be connected to the grid in two ways:
 
|< 700px >|
^  serial with grid power sensor  |^  parallel with grid power sensor  |
|  {{ :hiq_energy:hems:hardware:connected_power_plant_in.png?direct400 |}}  ||  {{ :hiq_energy:hems:hardware:connected_power_plant_ex.png?direct400 |}} |

When configuring the power plant, select
   ***in**: serial (**in**ternal) with grid power sensor
   ***ex**: parallel (**ex**ternal) with grid power sensor
The power plants are configured as internal by default.

==== PV inverter ====

Obtaining relevant data from photovoltaic is possible by two ways:\\
1. adding power-sensor to measure produced electricity by PV (no connection to interver). How to add power sensor please see [[en:robotina_charger:commissioning:power_sensor|Power Sensor]]\\
2. connecting PV inverter by Modbus TCP to EVSE (only for SolarEdge inverters)

=== SolarEdge inverter over Modbus TCP ===

|< 700px >|
^ EVSE and PV inverter connection |
|  {{ :hiq_energy:robotina_charger:rc_pv_inverter_connection_router.png?direct&800|}}  |




  *   **Connect** communication bus (to only one power-sensor)
  *   In HEMS Configurator power-sensor should appear as a "new device"
  *   Press and hold the push-button on the power-sensor until it appears **-SEt-** on display
  *   In HEMS Configurator click on the **" add"** button next to the source or consumer that the sensor is measuring
  *   Connect communication bus to the next power-sensor and repeat procedure