Hello! Sorry I haven't posted an update on this project for awhile! It has mainly been because we have been have a difficult time locating a host location in GFW and I didn't want to report back until I had some good news!
A small business owner in GFW is interested in hosting the charger. He owns a convenience store/restaurant/small hotel and reached out to me today. He is located in the downtown of the town which is next to several restaurants and other places of interest. He has single phase service so the full 240V is available at 80A!
Here is where I need advice: I am trying to find the best way to help him understand how the demand changes will effect his overall electricity costs. Perhaps I need some help here to understand as well but here is what commercial rates are in Newfoundland:
Demand Charges: $9.1/kW (Dec-Mar) and $6.40 the other months.
Energy Charges: $0.10/kWh for the first 3500 kWh in a month and then $0.08/kWh after that.
So the energy charges are pretty simple to estimate. Assume 25 charges per year, 75 kWh average charge and worst case of always $0.10/kWh is less than $200 a year.
However, on the demand charges side it could be quite pricey right? Worst case scenario is if charging coincided with their existing peak loads and added an additional 20 kW peak, wouldn't that increase their demand charges by $180-120 per month or $1,680/year? That is a quite significant cost and not sure if this small business would just be able to absorb these costs.
What are other peoples thoughts on demand charges?