You can use this example to display multiple energy metering devices' readings in Home Assistant. For this to work, the devices need to run tasmota and have been auto-discovered by Home Assistant (use command setoption19 1 in tasmota console or submit via mqtt).
You will need decluttering-card. Use energy_template.yaml as a decluttering card template, and use energy_card.yaml as one or multiple cards in lovelace. Don't forget to change <name> to each corresponding device name. (tip: you can search and replace <name> with the device name to save typing).
Example picture (in German language, but if you copy the code below yours will be in English)
Paste the following in your configuration.yaml
homeassistant:
customize_glob:
sensor.*_energy_power:
friendly_name: Power
icon: mdi:power-plug
sensor.*_energy_voltage:
friendly_name: Voltage
icon: mdi:flash
sensor.*_energy_current
friendly_name: Current
icon: mdi:flash-auto
sensor.*_energy_today
friendly_name: Consumption Today
icon: mdi:calendar-today
sensor.*_energy_yesterday:
friendly_name: Consumption Yesterday
icon: mdi:calendar-week-begin
sensor.*_energy_total:
friendly_name: Consumption Total
icon: mdi:calendar-week