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I have thousands of capacitors in my house, but I do not think that is your question. I have boxes and drawers with all sorts of capacitors, fixed, variable, electrolytic, voltage variable, mica, Mylar, polystrene, tantalum, and so on.
If you are asking how many loads on my 120 V circuits do I have that provide a leading current phase shift, then maybe none. I have never measured my load current to the power company for phase shift, nor is this easy to do. There is no way I could get a clamp on probe on either of the supply lines. I could mockup a Hall device to read phase shift, but I could not get an accurate measure of current.
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