In the past, the electrical system of a sailboat was a KISS solution. Know the options are multiple and the solutions are not simple and very expensive.
1980's: The KISS electrical system consisted of:
1. Single 8D battery (200 amp-hours),
2. Charger: one standard engine-mounted alternator (nominal 55-amp output) with a typical automotive voltage regulator.
3. Load: fluorescent lights, a couple of fans, navigation lights, and a VHF and Loran.
2000's: The Offshore DC System
1. Good -sized battery bank
2. High-output alternator with a multi-step regulator and a DC monitor
3. Wind generator
4. Solar panels
6. Load: Microwave, Electric Windlass, DC Refrigerator, electronics
7. Multi-stranded, tinned cable, marine-quality terminals, adhesive-lined heat-shrink tubing, and a multitude of other products had become widely available for wiring boats.
8. Various standards that apply to electrical systems on boats.
Every sailboat owner must decide how much he'll invest and if he can manage the technology to operate and maintain it correctly.