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Old 11-26-2012
btrayfors btrayfors is offline
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Re: MPPT vs. Shunting Solar Controller

Another wonderful effort by MaineSail! Thanks, RC.

I certainly agree that MPPT controllers can be very useful, and I believe they're well worth the cost.

Not mentioned in your video is the effect that MPPT controllers can have when multiple solar panels are connected in series, boosting the OC voltage to 36, 60 or even higher. In this scenario, the MPPT controllers are even more effective in using the available energy from the panels to charge the house batteries.

Another advantage of using panels in series: in low light levels (e.g., early morning or late afternoon or cloudy conditions), the panels still put out enough usable voltage for battery charging.

Bill
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