The Challenge of Fleet Charging
A retail parking lot and a bus depot aren’t the same engineering job. Fleet charging means predictable overnight windows, vehicles that all need to be ready by a set hour, and — often — a duty cycle where you can size for average draw instead of peak draw if the system is built right. Get that sizing wrong and you’re paying for a utility service upgrade you didn’t need.
Segments We Serve
Municipal and Rental
Charging infrastructure sized for fleets that scale — add vehicles without rebuilding your electrical service.
Buses and Transit
Automated, high-power charging for school buses and public transit — including pantograph systems for overhead depot and en-route charging.
Delivery and Service
Class 3–8 trucks and service vehicles charged overnight on a schedule your dispatch can plan around.
Taxi and Passenger
Fast turnaround charging so vehicles spend more time on the road than plugged in.
Featured Equipment for Fleet Depots
Kempower:
Depot Architecture for Scale
One power cabinet feeds multiple charging satellites, allocating power dynamically to whichever vehicles are actually drawing. In a depot where twelve vehicles plug in overnight but never all charge at peak simultaneously, that means less installed power capacity — and a smaller utility upgrade — for the same result. Expansion is a satellite add, not a new electrical service.
ABB:
Heavy-duty and Pantograph Charging
Over 135 years of electrical engineering behind ABB’s HVC depot charging for buses and Class 6–8 trucks, plus automated pantograph systems (up and down) for transit fleets — the reference point for electric transit charging. A roof-mounted pantograph allows the charging of larger fleets of electric buses overnight.
Contract Vehicles and
Public-Sector Purchasing
Winn-Marion holds an awarded NASPO ValuePoint contract for EV Charging Station Equipment and Services. School districts, municipalities, counties, and transit authorities can skip a separate competitive solicitation.
If you’re a public agency, this can take months off your procurement timeline.
Benefits for EV Fleets with the Right Charging Infrastructure
Transitioning to an EV fleet and building effective, efficient charging solutions reduces CO2 emissions, improves public health, saves on fuel and operating costs, and keeps you compliant with changing environmental rules and regulations
Save Operating Costs
Meet Sustainability Goals
Improve Urban Air Quality
Energy/Fuel Efficiency
Reduce Noise Pollution
Regulatory Compliance
EV Charging Fleet Projects
Electrifying Denver’s Largest School Bus Fleet
Winn-Marion led the electrical infrastructure behind Denver Public Schools’ new charging hub: a 650 kW Kempower-distributed DC fast-charging system serving 28 electric buses.
Read the Blog →
ABB Bus Pantograph Charger in Aspen, CO
Winn-Marion installed an ABB pantograph bus charger for the Roaring Fork Transportation Authority, marking a first-of-its-kind on-route charging project in Colorado.
Watch the Video →