On Fri, 10 Jul 2015 10:26:34 -0700 (PDT), "Ron D."
wrote:

http://www.eetimes.com/document.asp?doc_id=1276705
I believe in our area the systems that reduced demand by allowing the utility
to shut off the AC and/or electric hot water have been upgraded/converted
to the same electric meter two-way system.

Yep. That's another use for the zigbee radio in the smartmeter.
I'm not sure how the local utility (PG&E) does load shedding or
"demand response".
http://www.pge.com/en/mybusiness/save/energymanagement/index.page
For example, for air conditioning, they off these:
http://www.pge.com/en/myhome/saveenergymoney/plans/smartac/doihavesmartac/index.page
but I don't have a clue how they communicate.

Previously those demand based systems were radio based.

We also have the ability to
track demand, but I've not signed up.

I signed up. The web pile produces a tolerable graph of charges and
usage over time. What irritates me is that every time I impliment
some manner of energy savings, the savings are offset by a
corresponding increase in rates. Here's a spreadsheet I threw
together of my monthly costs and usage from 6/2008 to 8/2014:
http://802.11junk.com/jeffl/crud/PGE-daily-2012-06-22.jpg
Note the decreasing trend line in usage, and the almost flat trendline
in the cost graph. I dropped my usage by 25%, but the charges remaind
the same. Grrrr...




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Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558