Ummmm we found one with a Tee in between the roof and the eaves of a business. It Had taps and for insulation the guy ran the wire thru a waterhose. That ran all of the airconditiong and heavy loads, and basically all that was metered was lights. They figured this had been going on for over 20 yrs.
Had another guy that installed a tiny electronic photo cell on the Potential latch of his meter. Everything used after dark was free. Found one other where the guy had painstakingly dissassembled the gears in the meter and reassembled them slowing the reading significantly.
Most utilities start monitoring usage as soon as an account is made active, and any significant drops result in further investigation.They caught an electrician with taps ahead of the meter ,On investigation they discovered he had done the same thing at his fathers house and his brothers. In Texas if they catch you cheating a meter they can esitmate how long you've been doing it, then estimate how much you beat em out of, and backbill you accordingly.