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<br />Facility Audit Report 20 <br />San Leandro WWTF <br />APPENDIX B: UTILITY RATES ANALYSIS <br /> <br />Electricity: <br />The following rates were downloaded from the PG&E website for schedule E-19P as current for <br />June 2011. <br /> <br /> <br /> <br />These rates were applied to the monthly billings of the baseline usage period of calendar year <br />2010, using the following procedure: <br /> <br />1. The energy and demand rates are multiplied for each month by the actual account <br />usage, and each month summed, so separate energy and demand costs are determined <br />for the year. <br /> <br />2. When a seasonal TOU change occurs in a billing period (typically May 1 and November <br />1), proportion the energy usage according to the number of billing days in each TOU <br />period. <br /> <br />3. The energy totals (kWh) and maximum demand averages (KW) are determined for the <br />year. <br /> <br />4. A blended energy charge $/kWh is determined (which excludes demand charges). <br /> <br />5. A blended annual demand charge is determined ($/KW) based on the total of all demand <br />charges for the year divided by the average maximum demand. <br /> <br />From these calculations, the following blended demand and energy charges were calculated for <br />use in estimated electrical power cost savings: <br /> <br /> <br />Energy Charges E-19P <br />Peak$0.14581 <br />Part Peak$0.10333 <br />Off Peak$0.08611 <br />Part Peak$0.09345 <br />Off Peak$0.08732Winter <br />Summer <br />2011 Demand Charges per KW <br />Max. <br />Peak $12.11 <br />Part Peak$2.81 <br />Maximum$9.27 <br />Part Peak$0.92 <br />Maximum$8.07 Winter <br />Summer <br />Blended Energy Cost0.0996$ /KWHr <br />Blended Demand Cost209$ /Yr/KW Avg. Max Demand