I have servers that I don't want to run 24/7 but I still need to access them from time to time. My current solution was to schedule shutdown of all the servers

I have servers that I don't want to run 24/7 but I still need to access them from time to time. My current solution was to schedule shutdown of all the servers between 12am - 6am (usingcron) and start them up at 6am (using BIOS scheduled power-on), to save on electricity cost since no one uses them during those hours. However, this is much elegant solution.