My understanding is that when there’s a suspicious grow house, the electric co is usually the first to pick it up due to suspicious power consumption curves. Sophisticated growers use their own power supplies to heat the place and light it. They use gas or diesel generators to keep the lights on. Thermal imaging might be used after the power co informs the cops.
My power consumption is 24-7 at the moment...
I have a lab in my office with lots of test equipment. I'm running parallel long term performance tests on equipment that I design and is sold by my business... My business offices are located about 170 miles from my home so few here know what I do. Sounds like a recipe for grief from the city police...