@falconquest I read one time. All AC 'cleaners' deal with the AC side. All my stuff runs off DC. How much of the AC "dirt" is making it into DC (with all the filtering in the conversion process). Or rephrased: how much different does 100% battery DC look compared to DC made from 'cleaned up' or 'dirty' DC.
And one step further (recently saw the battery pack at my friends PV system): for those spending $100k or $1000k on their system: Why not make a DC system, fed from a simple bank of batteries (like those used for photovoltaik system all over the country). And charge the batteries (with dirty AC or the sun) during OFF times?