Stealing power is what gets people caught. The power company regularly monitor the amount of draw from a grid. When the power draw is higher than what has been paid for they start checking which grid is pulling more power, from there they narrow it down to the house (usually by individually cutting power to each grid briefly until they find the extra pull.) After grid and block are determined they find the idiot who spliced into the power cable from his yard. Pay your bill and they don't know or care if you're running a server farm to host porn sites, running an electric kiln, or growing tomato plants. Don't pay your bill / and or steal from them and they'll find you.
My electric bill went down almost 5% because of the more accurate readings from the digital meters. Only a savings of about $7, but at least they're not sending me corrections because of misrepresnted readings. Before the digital they sent me a bill for almost $300 at the end of the year because the guy misread the meter twice in the year (in my favor) and they caught it.
I have a friend who has the equivalence of a 5000W grow, but the only thing he's farming is data. What he's doing (spam email) while, sketchy IMO, is sorta legal and no one bothers him about his 24hr a day 5kwhr pull in addition to his regular 'living' electrical costs. Unless you have a massive grow pushing 5- 10K the power company doesn't care and won't have anything credible to turn over to cops anyway. Under 1K, don't talk, pay your bills, don't sell and don't steal and you'll be golden.