Every time I see the story covered the figure is 4000 watt, which the creator himself does mention, but every single picture that's shared is of the 2000 watt v

Every time I see the story covered the figure is 4000 watt, which the creator himself does mention, but every single picture that's shared is of the 2000 watt version. I've never seen this discrepancy cleared up. The 2000 watt version takes up every last inch of roof space, how on earth is there a 4000 watt version and what does that actually look like?