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File Number: 17-612 <br />efficiency and renewable energy deployment’, covering a proposed solar project at the WPCP. <br />The City was one of only four entities awarded this grant by the CEC, with San Leandro being <br />funded the largest grant amount. <br />Analysis <br />The WPCP represents one of the largest municipal energy-users, with current annual electrical <br />charges budgeted at $550,000. The proposed project will deploy energy efficiency upgrades and <br />a 1 MW photovoltaic (PV) solar power generation system at the City’s WPCP. Once completed, <br />the project will reduce the WPCP’s electrical energy consumption by approximately 53%, and <br />approximately 2.8m lbs. of greenhouse gas (GHG) emissions annually, helping to meet the <br />Climate Action Plan (CAP) goal of reducing emissions by 25% below 2005 levels by 2020. <br />The proposed Contract Amendment 1 for the Climatec Installation Agreement includes the <br />following components, all to be constructed onsite at the WPCP: <br />·1 MW ground-mounted solar PV system <br />·Install new HVAC controls at WPCP <br />·Integrate new HVAC controls into existing citywide system <br />·Exterior LED lighting retrofit <br />·Interior LED lighting retrofit <br />The energy efficiency upgrades proposed for the WPCP include LED lighting to replace existing <br />interior/exterior lighting fixtures, which will provide improved light quality, longer equipment life, <br />and immediate reductions in energy usage. In addition, the project will include building <br />automation upgrades to control the HVAC equipment, to provide substantial temperature control <br />improvements, scheduling, and monitoring capabilities to significantly reduce energy use and <br />GHG emissions. The 1 MW PV solar system will be powered by SunPower® modules, which <br />have a 25-year repair and replacement guarantee in addition to a full 25-year warranty covering <br />the panel’s rated power and workmanship. The energy efficiency measures and 1 MW PV solar <br />power generation system will reduce the WPCP’s reliance on grid-produced power by 53%, or <br />approximately $250,000 annually, based on current electrical rates. <br />Exhibit A shows a graphic representation of the proposed location for the solar PV system, which <br />would be placed in a section of the current drying beds. Four of the 13 beds are proposed for the <br />solar PV installation. The beds would need to be decommissioned in preparation for the solar PV <br />installation. Decommissioning would include removal of wet sludge lines, disposal of material in <br />trenches, stormwater inlet/plant drain installation, and backfill/pavement of center trenches. <br />Estimates are that the one-time cost for this work would be approximately $80,000 to $100,000 <br />per bed, or approximately $400,000. <br />With the proposed use of these four drying beds for solar PV, the WPCP would need to modify <br />the current sludge drying operations. Currently, all beds are used to dry the sludge materials, with <br />off-hauling (by contract) occurring 1-2 times/year at a cost of approximately $180,000 annually. <br />With a portion of the beds in use for the solar PV, staff anticipates that the process for handling <br />the sludge materials would be modified to haul directly from the belt press (wet materials). Staff <br />anticipates that the on-going annual cost associated with hauling wet sludge would be <br />Page 2 City of San Leandro Printed on 11/13/2017 <br />15