AKgrampy
Well-Known Member
- First Name
- Mike
- Joined
- Jan 29, 2022
- Threads
- 7
- Messages
- 3,528
- Reaction score
- 3,601
- Location
- Fairbanks, Alaska
- Vehicles
- Ford Expedition, Ford F-150, Mach E GT
- Occupation
- Retired
Exactly my point. Do you expect the non-customer to pay the cost that the demand charge covers? The issue is the utility has to built generation, transmission and distribution facilities to meet the maximum demand requirements. The demand charge recovers those payments. If the site had a 70% usage rate it would have a cost equal to residential rates. Greater than 70% it would be less than residential rates (generally in rate cases.) Batteries are a good option in peak shaving and do allow the utility to install and provide less “capacity” to the site. The decision obviously is cost recovery for the battery system and the reduced power delivery when the batteries are depleted. I think battery peak-shaving is a good option. My main point is people always complain about demand charges without really understanding the rate making process and that demand charges only have a cost effect when there is a poor load factor. Those costs should not be passed on to other customers.You keep mentioning that demand charges aren't a big deal, but I've talked to several operators and power company reps, and they seem to disagree. Also: https://electrek.co/2020/09/17/tesla-batteries-60-electrify-america-charging-stations/
Seems counterproductive for EA to be building that many sites with "low utilization", since they already have issues lighting up sites that would be popular (see: Green Bay and Milwaukee locations in Wisconsin).
Your point about back to back usage is for sites that are power limited, like sites using Freewire's Boost product. Battery backup for peak shaving is a totally different use case.
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