If you are having the power company bring in new service for your miners, you should let them know that you expect to be using 30KW continuously. At least in the US, standard residential service that gets installed these days is 240V 200A. But if you actually tried to use close to the full 200A continuously you'd probably end up killing power to your whole block... they only size the transformers for average use, and the transformer that you are likely sharing with multiple neighbors probably can't handle even a single house using all of its 200A continuously. 30KW might use up nearly all the continuous capacity of the transformer you and your neighbors are sharing. Big difference between peak and continuous.

Also, if you are lucky enough to have 3 phase power available at your pole, you may be able to get a cheaper commercial rate. Where I live it costs less than half of the residential rate to get 3 phase commercial.