Subject: Re: [smartgrid-interest] Draft Charter - Energy Market InformationExchange
Good point for discussion.
My view is that the key interactions are the home/business/internet side, and that for bandwidth-limited devices/networks the important thing is to have a consistent information model of what is exchanged, whether it's the messages (which may or may not have additional content) or more information.
So if the information model as expressed in the XML is consistent with smaller/slower connections, the information can be communicated and acted on in a consistent way across homes, buildings (in general, suggesting non-homes), industrial facilities, and so forth.
There are a number of alternate serializations of XML that take less bandwidth, and a communications aggregator/gateway could do a variety of things with the information streams. Small embedded devices can implement an entire web services stack, and may be usable in the future in home control/gateway environments -- the lesson from the DMTF (Distributed Management Task Force) is that a fairly complex management stack is now implemented in every NIC/ethernet card at a cost differential of roughly $1.
The full information model may be (initially) of less use in the Home to Grid space, but some of my talks and papers discuss use of forward price information and bids for homes, so additional information from the EMIX model will be useful in the future.
(see, for instance, my presentation (and paper with Toby Considine) from Grid-Interop 2008 on the page at http://www.grid-interop.com/2008/default.asp#session_712 . The presentation PDF seems messed up, at least on a Macintosh - font issues - but can be found from http://www.coxsoftwarearchitects.com/Pages/C_Energy.html and directly at http://www.coxsoftwarearchitects.com/Resources/Grid-Interop2008/Cox%2BConsidine%20Grid-Interop%202008%20Slides.pdf
Michel Kohanim wrote: