Contact an electrician to come look at it and give you an estimate of the costs involved. You also need to contact the power company to see if they will allow you to increase your service. In many populated areas they will have a limit as to how much power you can have per residential address. If you live in a more rural area there's a better chance that they will be able and willing to supply more power to your address.
Thanks for the info. What are the best reasons I can use to add the service? I am not sure setting up a bunch of computers for mining crypto is the best excuse:)
Getting an EV, swimming pool etc. Your electricitian will know what to tell them.