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Subject: FW: TeMIX & OPNADR common terminology.
Attached is an email exchange
with Bill from last week with a start on common terminology. Bill has put
a discussion of a common terminology on the agenda for the Energy Interop meeting on 7/28/10. Edward G. Cazalet, Ph.D. 101 First Street, Suite 552 Los Altos, CA 94022 650-949-5274 cell: 408-621-2772 From: William Cox
[mailto:wtcox@CoxSoftwareArchitects.com] Ed -- William
Cox
Just thinking out loud for tomorrow. In TeMIX the actors are all Parties. A Party is
essentially any of the NAESB actors. A Party can take on the role of a Buyer or Seller. Offers
can lead to Transactions. Transactions are either power transactions (energy
obligation contracts at fixed delivery rates) or option transactions. In an option transaction, one of the Parties is the Option
Exercise Party and the other is the counterparty to the Exercise Party Financial Markers use the terms Option Holder and Option
Writer for the two parties In OPNADR there was a suggestion yesterday in the call, that
Party rather than Entity be the generic actor which aligns with TeMIX In OPNADR there are no buyers and sellers, except perhaps
demand bidding customers in some kind of a program. Using Horst's terminology,
Parties take on the roles of REC or VEN. Demand bidding. Pre-executed "emergency signals" In Horst's paper the REC (resource energy controller) plays
the role of the Option Holder with the right to exercise the option.
Parties enter into a program by registering ( accepting the terms offered by
the Utility, ISO or Aggregator Party. This is the terminology that I meant. The Virtual End Node (VEN) (I would use the term Demand
Resource ) because it is symmetric to the role of a resource controller. OPNADR Events seem to describe the actual exercise of an
option. However this term seem somewhat limiting as some OPNADR or TeMIX
options could be exercised for any reason such as a financial reason and not a
curtailment event for reliability. With respect to the OPNADR interaction diagrams Bill
has developed for EI, they typically show an chain of events from ISO (REC) to
Aggregator(VEN) and then Aggregator (REC) to Demand Resource (VEN) for example,
this is only one interaction pattern. It could be that an Aggregator
exercises an option and then sells the power reduced to another customer or to
the ISO without any event being called. Likewise the sequence of transactions in TeMIX can take many
different sequences. A retail energy provider (REP) may make an
offer to a retail customer and once accepted the REP may offer to buy from a
power marketer or generator. if the retail customer uses less than
contracted, the Retailer may sell the power in the ISO real-time market. Alternatively a power marker could offer forward priced
transactions to the REP, the REP then makes forward offer (with a markup on the
power marketer price) to the retail customer. If the customer accepts the
REP then accepts the offer from the Power Marketer. To summarize I think we can get a common terminology and
interaction patterns for OPNADR and TeMIX. Edward G. Cazalet, Ph.D. 101 First Street, Suite 552 Los Altos, CA 94022 650-949-5274 cell: 408-621-2772 |
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