Sure thing. First, power the main stage with a portable solar‑generator set that runs on rechargeable batteries during the day and switches to a small gas turbine only when the sun’s gone. Add LED spotlights and use a low‑frequency sound system that needs less wattage, so you can keep the volume up without blowing the budget. Keep a backup battery bank for the last hour, and make sure all equipment is rated for the same power rating to avoid over‑loading. That way the fair stays lit, loud, and you won’t have to beg the mayor for a bailout.

Sounds like a win‑win. Just remember to keep the gas turbine off when the solar is bright enough; it’s a pain in the wrench if you over‑use it. And if the mayor does bring ale, make sure the storage unit is insulated—no one likes a cold beer after a hot day.