This question has been asked a couple times with variations and I haven't quite got an answer so I'm posting this here.

I found a small shop to use for mining, aiming for about 150kw total 24/7 power draw. I'm discussing with TDU and electrician about setup but neither of them are very helpful in giving advice for what I need. Their attitude is mostly just like "just tell us what you need and we'll do it". The shop has a small 1 phase 200 amp panel, but they are willing to make the upgrades.

From my research, it seems the question of 3-phase vs 1-phase delivery just comes down to cost. All mining hardware uses 1 phase but still many people seem to recommend to go with 3 phase because of reduced delivery costs. I'm not 100% sure the reason for this, so that is part of my question. Secondly, I might be able to take the panel and any other electrical equipment from the shop with me to later expand, so if 3 phase isn't strictly neccesary, maybe it is a good investment anyways?

Anyway my main question here is, should I give the TDU a load sheet requesting 3-phase power or just 1-phase? Any advice on this is appreciated because I am really unsure.

Thanks.