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must be measured and adjusted, usually on an annual basis. Option C usually requires a substantial amount <br />of time and effort to establish the baseline, provide adjustments and track the savings. <br />Option D — Calibrated computer simulation. Option D uses computer -modeling techniques to provide an <br />engineering model of component and/or system performance. The inputs to the computer simulation may be made <br />by engineering estimates, short or long term measurements, and utility or other metered data. Once the model is <br />properly calibrated it is used for the establishment of the baseline and savings by changing appropriate inputs. <br />➢ Baseline is established through a calibration process for the computer modeling. Appropriate measurements <br />and inputs are reflected against regression analysis for the metered data. <br />➢ Once the model is calibrated and the baseline established inputs are varied for the proposed FEM to <br />establish savings. <br />➢ Actual FEM savings are stipulated based on the computer model. There may be follow up calibration of the <br />model with the FEM in place to affirm the overall building simulation model. <br />➢ Cost of this method varies based on the complexity and accuracy of model desired, availability of data and <br />overall measurement required. <br />Attachment A <br />*CLIMATEC' <br />Page 5 of 13 <br />MERGING BUIL-DINGS & TECHNOLOGY <br />