Before you start
Gather the appropriate supplies and review the specific equipment manual.
- Daily power budget
- Solar charge-controller specifications
- Shading sketch
Step-by-step instructions
Start with energy demand
Calculate approximate daily watt-hours consumed from the battery bank.
Estimate usable sunlight
Use realistic peak-sun-hour estimates for your cruising area and season; expect less output with clouds and heat.
Account for losses
Include panel temperature, shading, wiring and charging inefficiencies.
Check physical placement
Sketch boom, mast, radar and rigging shadows across proposed panel locations.
Validate controller limits
Check solar array open-circuit voltage in cold weather, charge current and the correct controller configuration for the batteries.
Safety note
Solar wiring and battery charging can create fire hazards. A qualified installer should verify conductor sizes, overcurrent protection and marine installation details.
Key takeaway
A panel rating is a laboratory maximum, not the energy it will produce every day.
Keep this job on your maintenance schedule
Save the topic as a maintenance task, choose a due date or engine-hour target, and record future service. Free and stored on your device.
Add to my maintenance plannerThis guide is for general education. Follow your equipment manufacturer’s instructions, current navigation guidance and applicable marine safety standards. When uncertain, use a qualified marine professional.