Filtering / ignoring sensor values - getting crosstalk / induced voltage on CT's on solar energy monitor

Hi.
Should be simple, but i’ve spent days trying to figure something out…

Due to a crowded fuse box, I’m measuring 7-8 watts solar production - AT NIGHT!
how can I create a sensor to reduce that to zero, or, only show if > than 10 W

From what I can make out…
Maybe a template sensor to filter the actual sensor value
then use that template sensor for the energy dashboard?