Can anyone shed some light on why stacked: true isn’t doing what is expected?
I’ve stripped my code down to basics to try and pinpoint this behaviour.
It should be possible with area, as shown here: https://apexcharts.com/javascript-chart-demos/area-charts/stacked/
My code:
type: custom:apexcharts-card
graph_span: 24h
stacked: true
all_series_config:
stroke_width: 1
type: area
fill_raw: last
curve: stepline
span:
end: minute
series:
- entity: sensor.twc_charger_load_always_w
name: EV Charger
- entity: sensor.hot_water_system_supply_switch_0_power
name: Hot Water
- entity: sensor.arlec_sw_washer_power
name: Washer
- entity: sensor.arlec_sw_dryer_power
name: Dryer
- entity: sensor.eko_sw_dishwasher_power
name: Dishwasher
- entity: sensor.sw2_tvmedia_power
name: Media
Screenshots, first with stacked: false, second identical but with stacked: true.
As you can see, the entities aren’t stacked and the values are also all wrong.

