Power Distribution card

Sorry for the delay in replying @Plouf34

First, I installed the Card-Mod: 🔹 Card-mod - Add css styles to any lovelace card

Then I edited the dashboard I wanted to change:

Then I selected the Edit in the bottom left corner:

Then I edited the code from this:

type: custom:power-flow-card
kw_decimals: null
w_decimals: 0
watt_threshold: 999
min_flow_rate: 3
max_flow_rate: 10
entities:
  battery_charge: sensor.lux_battery
  battery:
    consumption: sensor.lux_battery_discharge_live
    production: sensor.lux_battery_charge_live
  grid:
    consumption: sensor.lux_power_from_grid_live
    production: sensor.lux_power_to_grid_live
  solar: sensor.lux_solar_output_live

To this (note the extra card_mod section at the bottom):

type: custom:power-flow-card
kw_decimals: null
w_decimals: 0
watt_threshold: 999
min_flow_rate: 3
max_flow_rate: 10
entities:
  battery_charge: sensor.lux_battery
  battery:
    consumption: sensor.lux_battery_discharge_live
    production: sensor.lux_battery_charge_live
  grid:
    consumption: sensor.lux_power_from_grid_live
    production: sensor.lux_power_to_grid_live
  solar: sensor.lux_solar_output_live
card_mod:
  style: |
    ha-card {
      padding-top: 205px;
      width: 1060px;
      height: 700px;
     transform: scale(1.8);
      }

You can play with the CSS values and tailor it for your own requirements @Plouf34