Dance Dance Power Generation!

The floor of the danceclub floats on a large platform that rocks back and forth in all directions (or multiple platforms so you don't slip and fall off!). That kinetic energy gets translated into power and that power lights up the club. The more people dance, the more frenetic the lights get. Slower (but still active) dancing will mellow out the lights and trigger a sooting light show. Particular songs during the night might be set to do particular light shows. Hell Yes, Loch Ness!