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<br />Electric Vehicle Transition Plan & Charging Infrastructure Evaluation for County Fleet <br />Price Proposal <br />RFQ 367-OC5463 <br />December 23, 2025 <br /> <br />Use or disclosure of data contained on this sheet is subject to the restrictions on the title page of this proposal 8 <br /> <br />Task 2. EV Charging Infrastructure Planning & Electricity Grid Impacts <br />Charging Infrastructure Assessment: Using our fleet <br />modeling results and recommendations developed with <br />PowerGuide Analytics, we will identify sites that will <br />require new or upgraded charging infrastructure, <br />including the number, types, and power level of EVSE. This assessment will be conducted using our <br />PowerGuide CHARGE tool, which is specifically designed to evaluate the charging energy and power <br />requirements at each site where EV replacements are recommended and where EV operation is <br />concentrated. The algorithms embedded in the tool analy ze expected vehicle operations at each site and <br />compare them with critical information on the EVs to accurately estimate daily charging needs. Key factors <br />considered include the vehicles’ energy efficiency, daily mileage or operation hours, battery capacit y, <br />maximum power acceptance rates, and available charging time. <br />Based on the anticipated operating conditions and constraints at each site, the PowerGuide CHARGE tool <br />will provide tailored recommendations for specific charger types and power levels, ensuring that these are <br />optimized on a vehicle-by-vehicle basis. Several outputs from our fleet assessment are key inputs for <br />developing charging infrastructure, including the following: <br />• Which existing vehicles are recommended for replacement with EVs and what types they are <br />• How much energy and power each EV will need to charge, as a function of: <br />✓ Average daily energy consumption (in kWh) – based of daily VMT <br />✓ Vehicle battery energy capacity (in kWh) <br />✓ The duration of time each vehicle has to charge between shifts and operations <br />✓ The maximum power acceptance rate for each vehicle (in kW) <br />• Where EV replacements will dwell <br />• Seasonal variation in daily VMT – we want to plan for the worst case while balancing the cost of over <br />installing based on a rare occurrence <br />• Whether or not smart/networked charging is desired <br />• Whether or not the fleet will use a charging management system <br />To determine the location of chargers, the PowerGuide CHARGE tool uses information on vehicle dwell <br />time, driving routes, parking locations, and the operational characteristics. Fleet vehicles do not necessarily <br />need to be charged at the locations where they are being parked. Similarly, depending on co -locations, <br />charging infrastructure may be considered at sites that multiple department fleets could share. Using this <br />information, the ICF team will develop a baseline charging infrastructure implementation s cenario with <br />rollout schedule that projects the following information: <br />• The projected number of chargers needed at each site to support the EV replacements over the next <br />15 years <br />• The recommended locations of EV charging infrastructure <br />• The recommended type (e.g., Level 1, Level 2, DCFC) and power level (in kW) of chargers for each <br />vehicle type <br />• The overall power need associated with charging infrastructure at each site <br />Docusign Envelope ID: 2559C90D-4549-45D0-8554-7958990EE7B9