Hi there,
I have a SmartSolar Victron MPPT 100/20 with 2 x 175W Victron Panels.
I run a 12v system on a boat. I am mostly based in the Med in warm weather conditions.
Should I upgrade the MPPT controller to 100/30 or will the extra current only be generated at peak wattage and therefore be of little benefit?
Many thanks!
You'd only really see the 350W in perfect conditions and +400W with cloud edge effects which last a few seconds. When it's hot in good sunshine you'd probably see 280 - 300W on average.
Unless you are missing essential Wh then you'd probably not benefit very much with a marginal 10A (120W max.) upgrade.
If you are planning to expand you PV array at any time, then an MPPT upgrade would be more worthwhile.
