Re: [emix] Groups - Transactional Energy Elements DRAFT - 2.pdf uploaded

Hi
Ed,




I read through draft-2 and your other submission to FERC, and reviewed
the
meeting notes.  Here are some comments/questions I still have that
hopefully will produce clarifications that will be helpful to others as
well:


- Footnote 2 (page 1):

   Is the Interval in that first example 1 hour (will deliver 1
kW/hour)?  Or is the Interval 24 hours?



- General: You say this model
reduces the need for ancillary services.  
Does that include services related to quality/reliability?


- Line 88: you mention that collateral is 'beyond scope', but then say
that
collateral is 'a critical element of the TEM'.   That seems a bit
contradictory.  If it's critical, where/how would collateral
information
be captured/communicated if not in scope for EI/EMIX?


- Table 1:


-- Extended Price:

   There is 'Interval' and 'Rate of Delivery', but when I try to
construct an equation I find I'm missing a variable for the right-hand
side
that has $ as a unit.  Wouldn't it be the sum of all the Price * Rate *
Interval, ie. ($/unit * unit/time * time)?  If so, then should the
description
include a reference to 'Price'?

-- Extended Price, 'average':

   The description of 'average' price uses the term 'duration of the
Interval' as opposed to simply 'Interval'.  If an 'Interval' is an
hour, how is  'duration of the Interval' different?


- Table 2:

-- If in practice the 'Offer' comes before the 'Transaction', perhaps
put Table
2 first, Table 1 second?

-- 'Rate of Delivery':  here again, 'duration of the Interval' might be
redundant and could just say 'Interval'?  As I understood it,  
Interval is already a duration of time.  And a contract would be a
series
of Intervals (for a specified duration ;))?  This may be a general
terminology issue since we haven't really settled on or clearly defined
that
terminology in EMIX yet.


- Tables 1 and 2: Is 'Interval' an offset from a start time, or is it
specified
as real time (as in UTC)?


- Tables 3 and 4: Why do these models specify a 'Maximum'
Rate of
Delivery, but the other two info models (Tables 1 and 2) simply the
'Rate of
Delivery'?


Thanks for any time you might be able to give to these questions.


Best Regards,

Anne





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