Peak Power at 5 a.m.?

Reason #356 that building energy management will be a big market.

Most companies experience peak power hours between 2 p.m. and 6 p.m. on summer days when air conditioners are blasting at full tilt.

But it can occur at odd hours. Mukesh Khattar, the energy director in Oracle's Energy and Environment Group, mentioned to me this week how the software vendor had a grocery store client that was experiencing a sudden surge of power at around 5 a.m. While it dissipated, the surge drove up energy costs. It turned out that bakers at the store fired up the store's ovens at the same time. By staggering the launch, the store was able to smooth out the artificial peak and lower their pricing cost.

Mike Dauber at Battery Ventures, meanwhile, noted that another grocery chain had problems with a surge between 1 a.m. and 3 a.m at a few outlets. An automated check indicated that the applilances were all working, so the chain had a security guard patrol for anomalies. The culprit? The people who unloaded frozen foods. Instead of bringing pallets to the freezer, opening the door, dropping off the food, and closing the door as they left, the workers were opening all of the freezer doors at once and leaving them open until the loading was complete. The process was subsequently changed.

Just a few anecdotes to remind you that building management and monitoring will likely be one of the major topics of discussion this year in green. It's cheap, the results are tangible, and sometimes the problems are easy to fix. EnerNoc recently bought a company to move deeper in the field and landed a contract to analyze Morgan Stanley's New York offices for efficiency. Other companies with a focus on aspects of building management to follow: Cimetrics, Tririga, BuildingIQ, Advanced Telemetry, Agilewaves, Johnson Controls, Cisco, Honeywell, Microsoft, Intel (building management will be where home automation begins, executives at Intel tell me), Adura Technologies, Lumenergi, and EcoFactor.

As Jim Lee, CEO of Cimetrics, told us about a year ago: "The way we heat and cool buildings in the U.S. is absolutely ridiculous."

4 Comments

  • Jus7tme 01/15/10 11:03 PM

    How about the one where the dot.com CEOs ordered that all the lights should be on all night, so that potential shareholders could be suitably impressed with how hard the company was “working”.

    Reply
  • russ 01/16/10 1:17 AM

    Relearning old and well known tricks? This is really a ‘demand peak’ that triggers cost tier adjustments for possibly hours to come.

    İ remember 40 years back turning on banks of flood lights in a controlled manner to avoid peak power charges. İs this somehow different?

    Reply
  • Jus7tme 01/16/10 12:36 PM

    Yup, it is mostly simple common sense that has long since been lost because people just did not care about energy waste.

    And now we need fancy instrumentation to discover what should otherwise be obvious.

    I’m not speaking out against smart instrumentation, though. There may very well be some more subtle effects that are not so obvious.

    Reply
  • Carl Hage 01/17/10 5:46 PM

    Does a business (or home) really need an outsourced software service to analyze load problems? The electric bill should show the usage profile for the billing period, and could be charted with a spreadsheet. Some simple analysis of the profile should give clues as to finding causes of peak load or opportunities for time shifting. There seems to be many startups to sell software or service analyzing power use—a fancy version of a spreadsheet.

    What makes sense to me is a 10-channel Kill-A-Watt type device that could be placed in a junction box and measure power out of each circuit breaker. Log the data on a memory card and/or use WiFi to download and display usage patterns.

    Another interesting device (and service) I heard of was monitoring of peak load, then temporarily shutting off certain loads to remove the maximum peak. In a home, perhaps a refrigerator could be shut off while the stove is on high, for example.

    Reply
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