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04-13-15-R
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04-13-15-R
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4/13/2015 1:58:39 PM
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TCAAP Energy Integration Resiliency Framework <br />Energy Efficiency Strategies <br /> <br /> <br /> 68 <br />Estimated Savings from Sub-Metering <br />Action Observed Savings <br />Sub-meter bills allocated to all tenants 2.5% - 5% (improved occupant awareness) <br />Building tune-up & load management 5% - 15% (improved awareness, identification of <br />simple O&M improvements, and load management) <br />Ongoing commissioning 15% - 45% (improved awareness and ongoing <br />monitoring & commissioning) <br />Table 25: Estimated savings from sub-metering (DOE 2006)18 <br />4.3.4.1. Case Study <br />Legrand North America | Better Building, Better Plants Challenge19 <br />Legrand, an international provider of information networks, installed sub-meters in its 14 largest <br />manufacturing and assembly facilities in North America. <br /> The Company had to achieve energy savings of 1.5% of total energy consumption for the <br />dashboard to pay for itself in just 1.5 years. Project ROI was 83%. <br /> Actions enabled by sub-metering dropped the minimum (baseload) usage by a factor of two. <br /> The systems empowered Lagrand to engage in conservation competition across facilities, <br />something that TCAAP businesses could do across the site. <br />Building sub-metering should be considered by architects and engineers at the building design stage. <br />While SB 2030 guidelines require minimum sub-metering, additional sub-metering would offer <br />business opportunities like those capitalized on at Legrand properties. Once sub-meters are in place, <br />ongoing energy feedback program opportunities could also be pursued in coordination with the <br />electric utility. <br /> <br /> <br />18 FEMP, Guidance for Electric Metering in Federal Buildings. 2006. www1.eere.energy.gov/femp/pdfs/adv_metering.pdf. <br />19 http://www4.eere.energy.gov/challenge/sites/default/files/uploaded-files/submeter-guide.pdf
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