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In general, air conditioning with solar power is impractical. Ventilation, on the other hand, is nearly-mandatory.
The easiest way to run A/C is by shore power (plugged into the grid).
It's possible to run A/C off of a battery bank, but you're going to spend thousands and thousands of dollars to make it happen. https://faroutride.com/12v-air-con/
The next easiest way is to run a generator.
This topic has its own page.