2K or 4K panels? What does that mean?

When I updated my homeowners insurance, they asked me for the number of panels and total price, etc. However, they also asked me whether I had 2K or 4K panels.

I know the wattage of my panels. And the total system wattage and the estimated annual production. None of these numbers are 2K or 4K. When I asked for clarification, she said it was the number of kilowatt hours the panel produces. In a day? In a year? Again none of these numbers are 2K or 4K really.

Then the rep told me when she got her solar panels, she was told they were 2K (I feel like that was just a line and she doesn’t have solar 😆).

They seem to have moved on without it, so it doesn’t really matter, but I’m curious if this actually means something I should/could know about.