Re: [recipe] Energy reduction / static management / dynamic management
Chris Lonvick <clonvick@cisco.com> Thu, 26 March 2009 13:43 UTC
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Date: Thu, 26 Mar 2009 06:44:45 -0700
From: Chris Lonvick <clonvick@cisco.com>
To: Stuart Cheshire <cheshire@apple.com>
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Cc: recipe@ietf.org
Subject: Re: [recipe] Energy reduction / static management / dynamic management
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Hi, I'm sorry that I couldn't make it. Many thanks for the notes. Theme (3) is being worked on by the OpenADR (Open Automated Demand Response) Communication Standard group. http://drrc.lbl.gov/openadr/ They have had several successful field trials. Regards, Chris On Thu, 26 Mar 2009, Stuart Cheshire wrote: > Some quick thoughts after tonight's dinner: > > Here are three (certainly not the only three) broad themes we might want to > think about. > > 1. Simple reduction of absolute energy usage. There are two aspects to this, > measurement and control. > > 1a. Measurement -- allowing people to determine where energy is going in > their homes. This alone is an important part of enabling people to save > energy, by knowing where they're using energy. The first step to replacing > your refrigerator with a more efficient one is discovering that your current > refrigerator is using too much energy. I'd like to see a world where every > power outlet or light switch includes a power meter, which can be > interrogated over the network to find out how much power is being drawn from > it at any moment. > > 1b. Control. For example, using less energy by automatically turning off > lights in unoccupied rooms. Here the theme is not more efficient devices, but > less use of the devices you have. > > 2. Time-sensitive use of energy. When the electricity company charges more > for peak-time usage, signaling refrigerator compressors, air conditioning, > hot tub heating, electric car charging, and similar high-load devices to try > to limit their consumption during peak time can reduce the peak load on the > electricity grid, and reduce the customer's electricity bill, even though the > total energy consumption may be the same. The difference here is that you're > not trying to reduce your hot tub heater's total energy consumption, you're > trying to control *when* it consumes that energy. > > 3. Dynamic adaptation to current spot pricing. This is an extension of (2). > Whereas in (2) the peak and off-peak hours for each day of the week are > published well in advance, with spot pricing the instantaneous price of one > kWh is not published in advance, but instead is announced in an hour-by-hour > or even minute-by-minute basis, according to current demand. The difference > between this and case (2) is that case (2) can be handled entirely within the > home, by simply entering the peak/off-peak hours manually into some > controller, but case (3) would require active communication with the > electricity company to determine the current price, which is a larger > challenge. > > Stuart Cheshire <cheshire@apple.com> > * Wizard Without Portfolio, Apple Inc. > * Internet Architecture Board > * www.stuartcheshire.org > > _______________________________________________ > recipe mailing list > recipe@ietf.org > https://www.ietf.org/mailman/listinfo/recipe >
- [recipe] Energy reduction / static management / d… Stuart Cheshire
- Re: [recipe] Energy reduction / static management… Chris Lonvick