Beginner Sailboat

Sailboat Solar Refit

The easiest way to add solar power to your sailboat. Charges your house battery at anchor without running the engine.

Sailboat Solar Refit — 12V DC wiring diagram showing 100W Deck Solar Panel, MPPT Charge Controller, 100Ah House Battery, 30A Main Fuse, Instrument Panel, Anchor Light

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Adding solar to your sailboat is one of the best upgrades you can make. This simple setup puts a 100W solar panel on deck, feeding through an MPPT charge controller to your house battery. The controller optimizes charging regardless of weather conditions, and the system powers your instrument panel and anchor light without running the engine.

This is an ideal starting point for a marine solar refit. The 100W panel provides enough power for basic electronics at anchor — GPS, VHF radio, and navigation lights. A main fuse protects the battery from overcurrent. Many sailors start with this setup and expand to larger panels or add a wind generator later.

Components

Component Qty Key Spec
100W Deck Solar Panel 1 100W
MPPT Charge Controller 1 20A
100Ah House Battery 1 100Ah
30A Main Fuse 1 30A
Instrument Panel 1 3A
Anchor Light 1 2A

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