This fine course is offered as a welcome addition to MIT's OpenCourseWare initiative. The materials from this version of "Introduction to Electric Power Systems" are from the iteration taught by Professor James Kirtley in Spring 2011. On the site, visitors can look over the syllabus, the course calendar, readings, assignments, and quizzes. The topics covered here include load flow, power electric motor drives, and polyphase networks. The site also includes a number of problem sets, along with their accompanying solutions. Visitors can look over the readings and provide feedback on the course to the site administrators.