Quote from: Bjorn_Blockchain on January 02, 2018, 04:44:29 PM

Quote from: Entropy-uc on January 01, 2018, 11:53:09 PM

Quote from: bsobel on January 01, 2018, 11:19:19 PM

75*3.4 plus (75 * 0.4644 * 24 * 30)

Your demand charge is easy as you have constant demand. Demmand charges are really for traditional businesses which need more whatts during certain hours. Your 24/7 and can just multiply and get them.

This is largely correct. In practice your demand needs to be scaled up to account for losses after the meter in conductors and transformers. This will add 5-10%. Plus your actual usage will increase with temperature so expect an additional 5-10% for your peak loading versus the average.

You also will need to budget for your cooling load. 75 kW of miners cannot be passively cooled, so you will have to account for the fans and A/C required to keep the space in temperature control.

Free advice. Take 1/2 of what you think you will invest and just put it in bitcoins. Use the other half for your buildout. When you have things under control at half capacity and understand the profitability and risks you can make a decision about building out to full capacity.

Quote from: bsobel on January 01, 2018, 11:19:19 PM

75*3.4 plus (75 * 0.4644 * 24 * 30)

Your demand charge is easy as you have constant demand. Demmand charges are really for traditional businesses which need more whatts during certain hours. Your 24/7 and can just multiply and get them.

Thank you both for the advice, very appreciated. Our team is at 36 KW now so we understand the cooling aspect, however I wanted to ensure the demand charge was a one time per month peak only charge and this info wasn't readily available in plain English on the utility website.

It should correspond to the peak yes.
There are probably costs associated with the infrastructure required to supply the power as well.