The website might be packed with information, but still I find it disappointing that the author starts by describing a controller while leaving the reader totally in the dark about what its function is. Also, but this may be forgivable given the target audience, I'd prefer to read a little introduction about what a microhydro plant really is, and its principle of operation.
That's me, too. I've read the essay many times, and I'm always scratching my head either at how the pieces fit into the big picture, or what various components or jargon means. Like, what's a penstock? What is "head"? I can Google these things and eventually come to a pieced-together understanding, but it would be a lot more meaningful and educational if explained by one person.
