These solar panel controllers could give you a 20-45% power gain in Winter and a 10-15% power gain in Summer. This means that you can use smaller and lower power panels and get the same power as larger more expensive panels. In addition to the cost of panels, a major limitation of solar power on boats is available space.
With a true MPPT controller you save on panel cost, installation cost and can maximize use of your available panel mounting space! To understand how MPPT controllers give such a benefit, please read our MPPT Solar Panel Controller Tutorial
