In have 100W of solar panels and two 90 amp alternators on my 30 HP diesel and a 2,5 KW petrol gen set that I use when I crank up the welding gear or the lathe. For all on board use I have a 3600 W inverter and 400 A?H hose batteries and a seperate 130 AH for the engine and a 100AH that lives in the bow and powers the bow thruster. Communication wise I only have a bog standard VHF and my mobile phone. Here in the MArina I use the resident WIFI and laptop that runs via the inverte. I have not had any need to plug into shore power so far and run the lot of solar power. When I get close to shore or shipping lanes, I have to run the engine to charge the batterie bank for a couple of hours every 3 days or so as I then use the plotter and radar more often to keep an eye on thoings. I also run it when I need to get a bit of sleep and have a 3 mile safety zone set on the radar that bleeps at me when anything comes into that zone.
Other toys on board are a full compliment of Tacktick instruments that give me depth, water temp, gps position wind direction and wind speed, course over ground and boat speed etc. Foruno radar and plotter and a raymarine auto pilot. 300 liter water and the same amount in diesel tankage and a 250 liter waste water tank. All in all a 35 foot floating home and little workshop. Food enough for about 4 month on board and enough fishing gear to have some fresh fish whenever I want it.
ATB
Michael