Hey everyone! I'm new to the solar energy scene and I recently bought 8 Hanwha Q Cell 330W panels (Isc: 9.49A, Voc: 46.55V). I'm trying to set these up for an off-grid shed and I'm going with a 2S4P configuration. I initially picked a Victron 100/50 MPPT, thinking it would work since it handles inputs of up to 93.1V and 37.96A. However, I've just learned that this MPPT can only output around 1400 watts, while my panels can potentially generate 2640W optimally. I'm fine with over-paneling a bit, but not wanting to waste 1200W. What MPPT should I consider to utilize most or all of the 2640W? Also, I'm looking for budget-friendly 24V inverters, preferably either 2000W or 3000W. My setup doesn't need to be top-of-the-line, just functional enough for my shed! Thanks ahead of time for your help!
1 Answer
The 100/50 in your Victron MPPT actually refers to the output amperage. For a 24V system, it operates around 28V, which means it can output around 1400 watts (28V x 50A). If you’re charging series 12V batteries, you’ll need to get a second 100/50 and set it up for 2S2P to make the most of those panels without losing money on an MPPT.
That’s a great idea! Just keep in mind that you'll also need a additional combiner box and about 50 feet more of black and red cable to make the setup work.