Solar space will be important. The magic number seems to be 1.5kw. On the HH 55 there is room for 2.0 kw and you can leave the davits as davits for a clean look. Notice the helm biminis. They can be fully enclosed. Without running air conditioning this boat reports the ability not to need to run the generator.

Below is the 5X. There is limited space for panels on the hard bimini or the coach roof hence the 600 to 800 watts on the davits. Dual fridges and freezers would require other power sources.