These three "first-generation" buses, numbered FC1 through FC3, used a series hybrid powertrain, equipped with two electric traction motors with of total power, drawing from a fuel cell that could supply 120 kW and a three-cell (wired in parallel) traction battery system with of storage, using sodium/nickel chloride chemistry. Each bus had an on-board capacity for of hydrogen in eight roof-mounted tanks pressurized to . The chassis was purpose-designed to accommodate fuel cell and electric traction motor components.
