Man I want your supplier for batteries and panels tbh.

A single DGX B300 that could run Kimi for a few concurrent users, uses 14 kW. Costs about 500k. Assuming you live far enough from the equator to have seasons, you'll have about 8 hours of daytime at the worst points of the year (less at my latitude for an example, we get ~6 hour days in the dead of winter, with sun angles below 10 degrees and sunshine available... not every week)

Even in a slightly less extreme location, You'd be looking at roughly a 100 kW array to fill the battery and power that one server reliably like when there's clouds, about 300 kWh battery capacity to get through long nights. Easily 6 figures total cost, maybe 20-40% of the server itself. This assumes no electricity used for cooling, so it's very much back of the envelope math, reality could be much worse or a tiny bit better depending on your latitude.