New Horizon Energy Audit Tools


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  • Google analytics tells you anything you want to know about who visits your website – where they click, how long they stay on a page, where they go nextWe’re seeing very targeted ads pop up on our computers because of sophisticated data mining that’s going on in the backgroundOur smart phones seem to be able to anticipate our every need, in part because of data analyticsIn the world of energy, the smart grid promised lots of data and it has started to deliverMany companies are busy figuring out how to best use this data to make a product that we all can’t believe we’ve been living withoutAt a very high level, ACEEE estimates that taking advantage of currently available information and communications technologies (a category that includes energy analytics) in the both residential and commercial sectors could reduce energy use in the U.S. by 12 – 22%
  • Take 15-minute-interval utility data and the building’s address disaggregate the building’s loads, and identify energy-saving opportunities such as lights that are left on during unoccupied hours or an inefficient ventilation systemPart of analytics may be a pattern recognition engine
  • Quote is from Autodesk and I’ve references the article at the end (Who has the fastest… GTM).Virtual audits are cheaper than on-site audits (travel expenses, man/woman-hours, expertise needed, etc.)Virtual audits take less time than on-site audits
  • Helps to prioritize buildings that may need an on-site amongst a large portfolio of buildingsMay be able to avoid an on-site for some buildings that have low savings potentialHighlights areas (i.e. chiller, etc.) to pay special attention to when on-site.
  • - According to E Source research, there are well over 200 different products
  • EnerNOC is running a pilot (unspecified product) – GTM articleCleaResult is using RetroficiencyJones Lang LaSalle using RetroficiencyA Department of Defense demonstration project will use FirstFuelDOD is also using Autodesk’s solution:
  • Hogsett also pointed out that the software doesn’t always produce reports of the same quality as that of hands-on audits. When VEA has an incomplete building profile, it uses an “inference engine” that makes assumptions about equipment use. For instance, if the type of cooling system hasn’t been specified, VEA might assume that the building uses a rooftop air conditioner based on energy-use patterns. If the inference engine makes incorrect assumptions, it can lead to inflated energy-use estimates and promises of energy savings that can’t be met. So although VEA is touted as a digital audit, the analysis outputs should be reviewed by a human to identify errors.
  • New Horizon Energy Audit Tools

    1. 1. New Horizon Energy Audit Tools Virtual Energy Audit Tools Andrea Salazar Senior Research Associate, E Source Rocky Mountain Association of Energy Engineers 14th Annual Energy Forum Thursday, October 17, 2013
    2. 2. Presentation Outline What is a virtual energy audit? Why do a virtual energy audit? What products are being offered? Who is using these tools? What are the results? 2 || © 2013 E Source
    3. 3. The Dawning of the Age of Analytics 3 || © 2013 E Source
    4. 4. What Do You Mean, A “Virtual” Audit? © E Source 4 || © 2013 E Source
    5. 5. This Quote Sums It Up Nicely… “Instead of putting boots on the ground at each and every one of your facilities, virtual audits use software to collect meter data, weather information, GIS mapping, information about similar buildings, & other publicly available information. Then, all of that data is pushed through fancy algorithms written by smart people that likely went to MIT or CalTech or other schools where super-geniuses go to do interesting things. Once that is complete, you get a bunch of insights about your portfolio‟s performance & recommendations for where to focus on implementing energy-efficiency measures that will deliver the greatest impact.” ~ Sarah McAuley, EnerNOC From Greentech Media‟s article, Virtual Energy Audits: Industry Fad or the Next Big Thing? 5 || © 2013 E Source
    6. 6. Virtual Audits Versus On-Site Audits It would take 1,000 energy auditors working 24 hours/day, 365 days/year for 13 years to assess the U.S. commercial building stock. 6 || © 2013 E Source
    7. 7. A Scalable Way to Screen Large Portfolios 7 || © 2013 E Source
    8. 8. Who are the players? 8 || © 2013 E Source
    9. 9. Some Examples 9 || © 2013 E Source
    10. 10. Some Examples 10 || © 2013 E Source
    11. 11. Some Examples 11 || © 2013 E Source
    12. 12. Who’s Using These Tools? 12 || © 2013 E Source
    13. 13. Who’s Using These Tools? “By using Retroficiency, engineers at CBRE spend just one day at the building site, and within 24 hours, they issue a „good looking‟ report to the customer. Before Retroficiency, engineers spent several days on site.” ~ Gary Hosgett, Global Energy & Sustainability Program Manager, CBRE 13 || © 2013 E Source
    14. 14. Results • Cadmus Group field trials: – Compared FirstFuel to ASHRAE Level II audit – Recommendations were consistent with onsite results – End-use disaggregation values were within 10% of on-site calculations – Results achieved at a fraction of time and cost of on-site engineering analysis and metering 14 || © 2013 E Source
    15. 15. Results • Fraunhofer Center for Sustainable Energy Systems field test: – FirstFuel‟s end-use values averaged within 8% of building submeter values 15 || © 2013 E Source
    16. 16. Results • Pacific Gas & Electric (PG&E) Field Trial: – 8% average difference in energy cost savings opportunities found from on-site audits vs. FirstFuel – End-use breakdowns differed by average of 7% – FirstFuel audits more than 3 times faster than on-site audits 16 || © 2013 E Source
    17. 17. Further Reading • • • • • • • • • • • • • • • 17 Using Data Analytics in Zero-Touch Building Energy Assessments, GreenTech Advocates, 2013 What Makes an Effective Virtual Energy Audit, Greentech Media, 2013 The First Fuel Is Efficiency, MIT Technology Review, 2012 When Do Energy Auditors Get to Eat and Sleep?,, 2013 The Science Behind Virtual Energy Audits Versus Traditional Audits, Greentech Media, 2013 EnerNOC Gives a Vote of Confidence to Virtual Auditing, Greentech Media, 2013 Half of Energy Savings Reside in Low- or No-Cost Operational Changes, Energy Manager Today, 2013 Why Virtual Audits Don‟t Go Far Enough, Greentech Media, 2013 10 Ways Big Data Is Remaking Energy, Gigaom, 2012 What If Energy Efficiency Is Even Easier Than We Thought?, Streetwise Media, 2013 Operational Improvements Can Double Energy Efficiency Savings in Commercial Buildings, Business Wire, 2013 Which Is Better for Efficiency: Retrofits or Behavior Change?, Greentech Media, 2013 WegoWise Identifies $137M in Savings for Low-Income Housing, Greentech Media, 2012 13 Energy Data Startups to Watch in 2013, Gigaom, 2013 Retroficiency, CLEAResult, Clear the Path to Building Energy Efficiency, Greentech Media, 2012 || © 2013 E Source
    18. 18. For More Information Andrea Salazar Senior Research Associate, E Source 303-345-9189 18 || © 2013 E Source