Well, you really do need to figure out a solution for everyone on campus. During the day almost every classroom and lecture hall is occupied by some sort of class or meeting, so the needs of these relatively small groups would inevitably come into conflict. Our intro CS courses also easily number over a thousand students, and while most don't come in person to lectures and are instead encouraged to watch the recorded version online, recording equipment would also be unavailable without power.

Not to mention that a majority of classrooms on campus would be rendered unusable by the lack of lighting (the largest lecture halls have no windows or natural light to speak of) and ventilation.