Super cool project. FYI it does require converting your ebooks to a special format.

I suspected as much since it’s using an Arduino Mega - very battery efficient I’m sure, but very underpowered.

In fairness, my understanding is that there are a lot of complications with adding distributed power to existing grids. That doesn’t mean it shouldn’t happen, just that there are engineering and safety challenges when power is coming from “everywhere” vs centrally.

And of course, there’s a lot of energy companies lobbying against clean power sources as well.