Converting Amps to Kw

Hey all -
I’ve been trying to convert my Tesla wall connector from amps to Watts / Kw
I can’t really seem to get it working… Any ideas?
Sensors I have are below. I’ve spent days working on this already haha

Just single phase - So Phase A current & Voltage

Ohm’s law

Watts = voltage x amps

{{ states('sensor.sma_array_udc') | float }}   255.28  ### voltage
{{ states('sensor.sma_array_idc') | float }}  5.446    ### amps
{{ states('sensor.sma_array_udc') | float * states('sensor.sma_array_idc') | float }} 1390.25488 ### watts

There is probably a neater way to do it. You can put that in the dev tools Jinja Template.
phase A voltage and current.

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