Allow more than one source for grid interface

[kzajac83]

Hi

How to Power Sankey Chart add all 3 grid phases?
By default is only one allow, when try add two more like below appear error:

type: custom:hui-power-flow-card
power_from_grid_entity:
  - sensor.shelly_em3_channel_a_power
  - sensor.shelly_em3_channel_b_power
  - sensor.shelly_em3_channel_c_power

[davet2001]

Hi @kzajac83, thanks for raising this issue. Correct - currently only one source is supported for the grid interface. I will update this ticket title to indicate a feature request.