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harrib0 avatar image
harrib0 asked

Solar panel confusion


Hello, I am looking for advice regarding updating my current solar panel setup on my leisure vehicle.

Currently I have a single 80w panel and a Victron 75/10 controller. With weight on the roof being the constraint, I think I have three options:

  1. Add another 80w panel and wire them in series to take into account the factory wiring, using the current controller
  2. Add another 80w panel and wire them in parallel but update the factory wiring, using the current controller
  3. Remove the 80w and install a 100/20 controller, update the wiring and a 200w panel (being the max size/weight I could install)


What do you think would give me best yield, all year round in the UK?

Many thanks for looking.

Solar Panelsolarsmart solar set-up help
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wkirby avatar image
wkirby answered ·

Two panels in parallel would offer the best yield if one of the panels in shaded.
One larger panel would yield more if unsheded of course, but this isn't easy to avoid on a vehicle.

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