An excellent course! Probably the only disadvantage I could mention is that the course was created around 2013 (which you have to figure out from the lectures, when they talk about 2017 as future), and, being dedicated to such a rapidly changing field, it grows old relatively quick. But that is by no means its creators' fault, of course. They did an outstanding job, and I'd like to thank them all for it. The course is organised very wisely, divided into topics and followed by tests. Challenging peer-graded assignments are also included. As for the subject, when I started the course, I had no idea that there is such a lot to know about energy, so many energy sources and so many ways to handle them. The 9 weeks of the course cover most of them to a decent extent - although, to my taste, the algae-part was a bit too in favor (that is, it was quite detailed, including some biology above average non-biologist level), which, I fear, resulted in my getting it all messed up in my head. But really interesting, too. During some lectures I felt that they were actually focused on America rather than on all of us (which is not a surprise, given that it's an American course), and, of course, degrees of F, gallons, pounds, miles and other cruel things annoyed the hell out of me! :) But all in all, it was a very informative and highly useful course, and I'm glad I decided to take it.