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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 9 <br /> <br />Charging Infrastructure Optimization: One of the key features that <br />sets ICF’s PowerGuide Charge tool apart from other charging <br />infrastructure models in the market is its embedded optimization <br />algorithms. These algorithms enable the County to optimize the <br />number of chargers by increasing the vehicle-to-plug (V2P) ratio while <br />maintaining the resilience of both charging and fleet operations. <br />Following the development of the baseline charging infrastructure <br />needs scenario (assuming 1:1 V2P), PowerGuide Charge uses its <br />optimization algorithm to develop an optimized charging infrastructure <br />needs scenario. This involves determining the most appropriate V2P <br />ratio for each facility and groups of vehicles and assessing the <br />feasibility of smart/scheduled charging. This approach implies using <br />fewer charging stations to service a greater number of EVs, leading to <br />significant cost savings. It reduces the upfront investment in charging <br />infrastructure and minimizes ongoing operational and maintenance <br />expenses. Moreover, this efficient use of resources is particularly <br />beneficial in conserving space, a crucial aspect in urban or densely <br />populated areas. The ICF team will carefully review the <br />recommendations provided by its PowerGuide Charge tool to identify <br />the highest feasible V2P ratios that can be achieved while ensuring <br />reliability and successful daily operations of the fleet. ICF will also <br />investigate the effects of peak and off-peak pricing on the proposed <br />charging plan – when in some cases it may make sense to make <br />operational changes to allow for cheaper charging. In other cases, we may recommend scheduled charging <br />at night which fits with existing operations but starts after midnight when peak rates have reduced. <br />In determining the charging infrastructure needed for each location, the ICF team will also plan for future <br />growth and expansion by considering the scalability of the chosen charging station configurations. Our <br />team will anticipate the potential increase in the County’s EV fleet and ensure the selected charging <br />stations can accommodate the additional demand. This may involve allocating additional space and <br />electrical capacity for future installations. By proactively considering scalability, the ICF team will ensure the <br />charging infrastructure can easily adapt and scale up to meet the growing needs of the County’s EV fleet. <br />Charging Infrastructure Rollout Schedule & Cost: To advise County departments on expectations for <br />charging infrastructure development, the ICF team will develop a rollout timeline and cost estimates for the <br />proposed charging infrastructure for each of the County’s 28 sites. Depending on circumstances, the lead <br />time for charging infrastructure development can be significantly longer than the lead time for vehicle <br />procurement. Due to this, a well-laid-out electrification timeline that includes both vehicle procurement and <br />infrastructure development is critical to minimizing time for implementation. In developing these schedules, <br />the ICF team will ensure there will be sufficient electrical capacity available to support expected EV <br />deployment, and the County can spread the cost over time to facilitate funding the infrastructure build out. <br />In developing the schedule, the ICF team will consider the upfront utility upgrade and site preparation <br />investments needed during the initial phase, known as futureproofing, to ensure sufficient electrical <br />capacity will be available within each facility to expand charging equipment in future years without the need <br />for additional construction. For example, if a facility needs a total of 10 chargers by 2030, it is more cost - <br />effective to build such capacity during the initial phase, while the charging equipment can be installed over <br />multiple phases. <br />Docusign Envelope ID: 2559C90D-4549-45D0-8554-7958990EE7B9