[P-hack]

Also since it can be "educational", you want to measure the results somehow. i.e. see if you can map utility usage to historical weather patterns (temperature, amount of sun/precip). The more you play the educational angle the better IMHO. And if you intend to measure the results where possible, the skeptics should be better satisfied. Make a science out of it. Offer to keep actual usage private of course, don't want to potentially embarass anyone, but showing percentage actually saved is good. Keep it realistic and simple too, i.e. biofuel is process heavy, and you have a bunch of glycerin to dispose of. Whereas automated shades can be made cheaply with student "labor" and puts no ongoing expectations on students or staff. Figure out how much heat the student body and staff make too. Get some help from appropriate teachers and buy-in from the principal. Do cost/ROI-benefit on every idea, like a boss.