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Solar panels

Discussion in 'General Yachting Discussion' started by Robert Short, May 8, 2026.

  1. Robert Short

    Robert Short New Member

    Joined:
    Dec 2, 2024
    Messages:
    3
    Location:
    Vancouver,Canada
    I have 4 solar panels on a 55Fleming,how much energy should I get from them on a sunny day in Denmark???
  2. Capt J

    Capt J Senior Member

    Joined:
    Jul 11, 2005
    Messages:
    14,852
    Location:
    Fort Lauderdale
    How long is a piece of string? What size are they? What are they rated for????????
  3. Norseman

    Norseman Senior Member

    Joined:
    Feb 24, 2005
    Messages:
    3,541
    Location:
    Palm Coast, Florida
    Summer or winter in Denmark? Big difference in the sun-angle.
    Panels are rated in Watts, on my boats I got 4.4 amp/hrs from each 75 watt
    panel but 20% more in the Exuma Islands with the sun directly overhead.
    A lot less in a Danish winter..o_O
  4. Robert Short

    Robert Short New Member

    Joined:
    Dec 2, 2024
    Messages:
    3
    Location:
    Vancouver,Canada
    Thanks for the info,actually I have 6 panels fully embedded into the hardtop!Thanks again
  5. Capt Harry

    Capt Harry New Member

    Joined:
    Thursday
    Messages:
    5
    Location:
    USA
    You will need to specify the wattage my friend, I know for a fact that the 55 fleming owners are obsessed with upgrading their solar panels:D so your solar panel power could be ranging from 75w considering original old ones to the popular 150w ones (my father's friend has those on his) or even 200w each.
    If you cant tell which ones you have, your best best is to check the reading on the MPPT controller, as the result varies alot per spec.
    We can also identify it from the inverter screen or the panels dimensions, its harder though.

    Anyway assuming it would be cloudy in Denmark, expect around:
    - 0.5–1.5 kWh a day if 600w system
    - 1–2.5 kWh a day if 900w system
    - 1.5–3 kWh a day if 1200w system.

    hope these rought estimations help you in your findings! These are based on real world usage by the way which accounts for losses.
    Yacht News likes this.