I had a chance to borrow an utility meter- Alpha Plus to see how the TOU demand readings from TED would compare.
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Good stuff. Thanks for the feedback. With demand charge, it does appear that there are a lot of variations from utility to utility, some of these enhancements are doable (i.e. choosing maximum price vs maximum consumption) for example we can fit in there by adding a flag check. Same may go for a negative number fixed charge, but that is something we would have to discuss internally as its not really how its supposed to be used.
With TOU's, we do not reset the 15 minute average every time the TOU chages...so the final 14 minutes of off-peak would be averaged in when you get to your first minute of peak. We wrestled with that implementation, but the utilities we spoke to said that's how they handled it. Again, that may be something we can add w/ a simple flag and code to reset it.
For the 5kW issue w/ tiers...could you not just setup the first tier for demand charges to be 0-5kw and use a $0.00 as the demand charge value, or are you saying w/the TOU plan the first 5kW is free?
For the tier issue, most of the utilities we have spoken to base it on total kWh usage. If your utility doesn't, all you would need to do is adjust the tier levels under system settings to reflect the difference in the tier levels (i.e. 0-800, 801-1600 would become 0-800, 801-2400, etc).