He managed to build his own monitor using an Arduino. The trick of this build has to do with how the system works. The panel includes an LED light that blinks 1000 times for each kWh of electricity.

In this video I demonstrate a simple autonomous solar tracking system that can be used with solar panels or parabolic mirrors to improve their performance in producing renewable energy. For this ...

I built a single axis solar tracking 2400 watt gridtie system in Madagascar 4 years ago. Surprisingly, it has withstood 2 cyclones in the last year without damage.