Solar Panel Angle and Shade: Getting More Watts at Camp

A panel's rated watts are measured in lab conditions. At camp you'll usually see less. Angle and shade are the two things you can control.

1. Point north, tilt up

In Australia the sun is in the northern sky. A panel facing north and tilted toward the sun gathers more than one lying flat. In winter the sun is low, so tilt steeper.

2. Roof panels lie flat

Panels on a caravan or ute roof lie flat. They do well in summer around midday, but lose a lot in winter and early and late in the day. A portable panel you can aim makes up for that.

3. Shade hurts more than you'd think

Shading part of a panel can drop its output by much more than the shaded area, because the cells are wired in series. A shadow across one row can take a big bite out of the whole panel. Park the panel where it gets full sun for the middle of the day.

4. Heat lowers the voltage

Hot panels make a little less power. Keep air moving under portable panels: don't lay a blanket on hot ground if you can prop it up.

5. Check what you're getting

A solar controller display or battery monitor shows the real charge current. Compare morning, midday and afternoon readings, and move the panel to see what helps.

6. Quick summary

• North-facing and tilted beats flat.
• Avoid even small shadows.
• Watch the real charge current and adjust.

Work on 240V AC wiring, including inverter outputs and mains inlets, must be done by a licensed electrician. For high-current DC gear, follow the maker's installation manual and have an auto electrician check your work if you're unsure.

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