building analytics: energy information systems
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www.esource.com || © 2013 E Sourcewww.esource.com Thursday, October 17, 2013
Building Analytics
Energy Information Systems
Andrea Salazar
Senior Research Associate, E Source
Rocky Mountain Association of Energy Engineers
14th Annual Energy Forum
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Presentation Outline
What are Energy Information Systems?
What products are being offered?
What research is being done on these products?
What level of energy savings are these tools enabling?
Dive into a few tools!
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Energy Information Systems
Also known as energy analytics platforms, building dashboards, fault detection & diagnostics, ongoing commissioning, or smart building systems
Capabilities vary widely Not always a part of a building automation system (BAS)
Can sit on top of BAS/BMS or can be fed data directly from utility bills, sensors, meters, etc.
Source: CKSinfo.com
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How They Work
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There Are a Lot to Choose From!
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Research Can Help Lawrence Berkeley National Laboratory (LBNL) work:
Framework (PDF) defining EISs and a matrix (XLS) categorizing some tools
Case studies (PDF) University of California at Merced LBNL office building Walmart Sysco
Current work assessing costs and benefits PECI created an updated inventory of 14 tools with a
focus on measurement & verification protocols/capabilities
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But Do They Save Energy? Vendors claim up to 30 percent energy reduction LBNL case studies:
Source: CKSinfo.com
Site EIS used Action/observation Energy impact
UC Merced Automated Logic Corp.’s WebCTRL
Excessive overnight gas use due to nonzero pressure at steam boilers
30% reduction in average daily gas use; avoided cost of $4,500/month
Sysco NorthWrite’s Energy WorkSite
Retrocommissioning and refrigeration tune-ups
36% reduction in site energy use
UC Berkeley
No central EIS Lighting retrofit and ventilation schedule change
30% reduction in whole-building energy use
Depends on: Skill/motivation/ability/authority of users Building type Building performance before energy analytics
© E Source
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Diving Into Some Specific Tools
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Offering from Cascade Energy Engineering company
offering audits and tune-ups since 1993
Distinguishing features Ability to normalize using
large number of variables
Ability to track other resources, including diesel, water, and sewer
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Sensei
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Sensei
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Sensei
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Sensei
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Sensei
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Sensei
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Sensei
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Sensei
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More of a controls company that has an analytics module
Distinguishing features: Intraday energy and
demand forecasting Multiple offerings,
including controls, smart thermostats, dimmable light-emitting diode systems, and power meters
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Grid Navigator
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Andrea Salazar
Senior Research Associate, E Source
303-345-9189 [email protected]
For More Information