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Subject: FW: [emix] Non-interval information and tariffs and SEP
This stuff dances on the edge between Energy Interop and EMIX. Much of it feels like Energy Interop, but if EMIX *MUST* (whatever that means) support SEP Tariff Models, then it belongs there and might be used here… Just sharing. tc "It is the theory that decides what can be observed." - Albert Einstein
From: Toby Considine [mailto:tobyconsidine@gmail.com] On Behalf Of Toby Considine A significant issue that was highlighted in the SEP conversations was communications about parts of the price that are, essentially, out of band for EMIX as we have discussed it. Examples of this are: Tiers and Accumulation: Let’s posit two tiers at night, 3 tiers during the day. Over the course of a [month], a customer’s usage floats up, reaching up to Tier 2 during the day, and then Tier 3 during the day, and finally, tier 2 at night. - Straightforward to communicate tier structure for the next 24 hours with existing structures (Interval with 2 tiers 12:00 – 8:00, Interval with 3 tiers 8:00 to 6:00, Interval with 2 tiers 6:00 to 12:00) - Could add more intervals to describe the next week. - Etc. Harder to do: Tell customer where he is in the float. This requires knowledge of three facts: When period began, when it ends, what the current level is. Current float determines what today’s *actual* prices are (although one could argue that is the responsibility of the house) (although with 3 power hits this morning before 9:00 as Progress prepares for another 90 degree day, my home may forget and need to ask). Begin date matters. “I did that in 3 days?”. End date matters “I have to hold out for how long?) Accumulation is easy enough to communicate (Interval, begin, end, current level and datestamp). But where does it belong? Not in the product, not in each Interval. Is it in effect a Term, that can optionally be dropped in the list of terms? Is it a Hint to be dropped in the optional array of Hints? Is it wholly in Energy Interop, and therefore of no interest to Emix? Note: Accumulations could be 10 minutes, daily, weekly, monthly, annual, does not matter. Demand Charges. If we come up with a place (Terms, Hints, … ) to hold Accumulation in EMIX, should demand charges move there? Recommended Peak Use. SEP construct to indicate ‘might not be a good time to fast charge…”. An uneconomic concept if ever there was one. Does not appear to have any penalties. This one is clearly tied to a particular interval. “The single biggest problem in communication is the illusion that it has taken place.”
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