Specifications include, but are not limited to: A. Introduction 1. King County Metro is transitioning its bus fleet to all electric operations. A significant element of cost in this program is the charging infrastructure; particular the DC depot chargers required. This request for information seeks to identify prospective suppliers interested in working with King County and other partnering agencies and to gather information on the charger products currently available that would support high reliability charging for KC Metro’s first fully battery electric bus (BEB) base. The chargers are anticipated to be used in association with J3105-1 pantograph charging and a charge management system to regulate overall base charging power and to monitor bus state of charge and other key parameters essential to the efficient operation of the battery electric bus fleet. B. King County Metro’s anticipated near term electrification plans: • 2020: South Base Test: 10+/- charging stations. • 2021 (mid): Interim Base: 24 Chargers serving 48 charging stations with charge management system (Ref 2.1.A.1 above). • 2022 (mid): Interim Base: Expanded with additional 28 chargers and another 52 charging stations with charge management system (Ref 2.1.A.1 above). • 2025: South Annex Base: Approximately 125 new or relocated charging stations. • Beyond 2025: Additional new and existing transit base electrification. 1. A conceptual level study was recently completed to develop planning level infrastructure and operational procedures for the 120 bus base (100 in service, 20 in spares) in South King County (aka Interim Base). The study indicated that a quantity of approximately 50, 150kW DC chargers and two to four, 300kW to 450kW DC chargers could be a possible depot charging solution for this fleet using J3105-1 pantograph down interconnection architecture. Open Charge Point Protocol (OCPP) 1.6 is expected to be the communication standard for charger to charge management/back office system; J3105-1 and J1772 CCS Type 1 vehicle to charger and ISO 15118 and/or SAE J2847 for high level communication charger to vehicle. The DC chargers could be a separately procured component in a BEB depot charging system consisting of power infrastructure (utility AC power feed, switchgear and metering, transformers, conduit, and cabling), chargers, interconnects, structural supports, a charge management system and battery electric buses. Additional to chargers, suppliers are encouraged to provide information on charge management systems that could be deployed with chargers.