Sustainable Facility - February 2009 - (Page 35) spotlight E-MON E-Mon Helps Property Owner Recover $192,000 in Annual Electrical Costs. in a junction box in the hallway outside each apartment. A Cat5e cable runs from each current sensor along the hallway and down the electrical riser closet to the basement of the building. There, 122 Class 1000 E-Mon DMon submeters—one for each space being metered—condition and communicate the digitized data via Ethernet to the building’s engineering office. Running on the building engineer’s desktop PC, E-Mon Energy software provides a user-friendly graphical user interface that allows the building operators to analyze, manipulate and import the meter data into histograms, pie charts, monthly billing statements and many other useful templates. ELECTRIFYING RESULTS From start to finish, the entire submetering project took only 35 working days to install. The system’s $113,000 installed cost paid for itself in only seven months—returning $16,000 per month in electrical costs that were recovered as a direct result of submetering the property. As an added bonus, holding the tenants accountable for their actual usage resulted in increased energy awareness and higher conservation levels. The building owner is very happy with the system, especially how the E-Mon Energy software collects the data and produces monthly billing statements. In this application, submetering forestalled the necessity of raising tenant rent across the board by providing a means to accurately assess individual electrical usage. Allocating costs to the using parties produced a win-win for this farsighted property owner, who not only improved the facility bottom line but boosted tenant trust and satisfaction through fair and equitable billing practices—thanks to the hardware/software system from E-Mon. To learn more about saving big energy bucks with submetering hardware and software solutions from E-Mon, visit www.emon.com/ sf29.asp or call today at 1-800-334-3666. Pressured by rising overhead, the owner of a nine-story mixed-use property was faced with a dilemma: either raise tenant rents or find a way to bill each occupant in order to recover electrical costs that were being absorbed by the owner instead of passed through to the tenants. Running additional power company metering to each of the building’s more than 120 commercial and residential lessees would have been prohibitively expensive, so it was decided to submeter each space to monitor its electrical usage (kWh). Submetering turned out to be the ideal solution for this application, in lieu of the typical cost-per-square-foot formula that favors high-consumption users by unfairly saddling low-use consumers with shared costs beyond their control. Alternatively, submeters eliminate tenant disputes by providing proof of actual energy usage. And, through E-Mon Energy software, the raw meter data is easily used to generate monthly billing statements with revenuegrade accuracy. SYSTEM DESCRIPTION Chosen by the electrical contractor because E-Mon “has the best equipment from our experience,” the E-Mon D-Mon submeters acquire the tenant’s electrical data by means of a 200A split-core current sensor installed W W W . S U S TA I N A B L E F A C I L I T Y. C O M 35 http://www.emon.com/sf29.asp http://www.emon.com/sf29.asp http://WWW.SUSTAINABLEFACILITY.COM
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