Hey everyone! I recently learned about using a Victron system for my grid-tied solar project. I'm going with a 48V setup using Fogstar batteries, and my house has a roof that faces all four directions, plus several outbuildings. I'm really eager to maximize the number of solar panels I can install, so I'm wondering if anyone here is running a system with multiple MPPT charge controllers?
2 Answers
In the UK, most installers typically go for optimizers on each string for different roof angles or might suggest microinverters. But using multiple MPPTs is totally doable! Just make sure to find a good installer who can handle the structural requirements, especially if you're on the roof, and is MCS accredited for your setup.
I assume you meant 'Victron'? No worries about using multiple charge controllers—they work just fine together. Just a heads up though, if you're in the USA, grid export isn't usually supported. But if you're in the UK like you said, then it should be all good!
Yep, it's Victron! I'm actually in the UK, so I'm relieved to hear that grid export is supported here. Thanks for clarifying!
I can take care of the structural parts since I'm a builder, and I know some sparks for the Part P stuff! But I still don't get when I should have a string with its own MPPT versus doing parallel strings into one. My guess is that strings with different angles or shading should definitely have their own MPPTs, right?