How to Expand Your City's Commercial EV Fleet with Vocational Trucks

By ⚡ min read

Introduction

Transitioning a municipal or commercial fleet to electric vehicles (EVs) is a significant step toward sustainability and operational efficiency. When it comes to heavy-duty vocational trucks—like those used for waste collection, utility work, or construction—the process requires careful planning, specialized vehicles, and strategic partnerships. A recent example comes from Frankfurt, Germany, which expanded its commercial EV fleet by adding 10 new, specially upfitted Mercedes-Benz eEconic heavy-duty EVs, bringing its total count of battery-electric low-floor trucks to 34. This guide walks you through the essential steps to replicate such a successful expansion, from initial assessment to full deployment and ongoing optimization.

How to Expand Your City's Commercial EV Fleet with Vocational Trucks — Source: electrek.co

What You Need

Fleet inventory data – List of current vehicles, their usage patterns, and replacement cycles.
Route and duty cycle analysis – Detailed logs of daily distances, payloads, stop-start frequency, and idle time for each vocational application.
Charging infrastructure plans – Site assessments for depot charging, potential grid upgrades, and energy capacity.
Vehicle specifications – Information on available heavy-duty EV models suitable for vocational use (e.g., low-floor trucks, tipper trucks, refuse collectors).
Upfitting requirements – Needs for specialized bodies (e.g., bin lifters, cranes, compressors) and integration with EV chassis.
Budget and funding sources – Internal capital, government grants, incentives, and total cost of ownership (TCO) projections.
Stakeholder buy-in – Support from fleet managers, drivers, maintenance teams, and local government.
Maintenance and training resources – Service tools, qualified technicians, driver training programs.

Step-by-Step Guide

Step 1: Assess Your Fleet Needs and Feasibility

Start by analyzing your current vocational truck fleet. Identify which routes and applications are best suited for electrification. For Frankfurt’s expansion, the city focused on low-floor trucks used for waste collection and street cleaning—applications with predictable daily routes and return-to-depot opportunities. Evaluate key factors such as daily mileage (ideally under 200 km for most heavy-duty EVs), payload requirements, and operating hours. Create a shortlist of vehicle types where battery electric replacements are available. Also consider grid capacity at your depot: can it support multiple chargers simultaneously? Consult with utility providers to estimate upgrade costs and timelines.

Step 2: Research and Select Suitable EV Models

Once you know your requirements, explore the market for heavy-duty EVs that match your vocational needs. In Frankfurt’s case, the city chose the Mercedes-Benz eEconic, a purpose-built battery-electric low-floor truck. This model offers a range of about 200 km, a GVW of up to 32 tons, and is specifically designed for municipal services. Other options include the Volvo FL Electric, Renault Trucks E-Tech D, or the RIZON e18M. Evaluate each model’s battery capacity, charging speed (both AC and DC), cabin ergonomics, and upfit compatibility. Request technical data sheets and, if possible, arrange test drives or demos.

Step 3: Plan and Execute Vehicle Upfitting

Vocational trucks often require specialized bodies or equipment—like bin lifters, hydraulic systems, or compressors. These must be integrated with the EV’s electrical architecture without compromising safety or warranty. Work with an upfitter experienced in electric chassis. For the eEconic, Frankfurt’s upfitting included modifications to accommodate waste collection mechanisms while maintaining the low-floor entry. Ensure all upfitted equipment is compatible with the vehicle’s power take-off (PTO) options and high-voltage system. Document all installation procedures and obtain certifications from both the chassis manufacturer and upfitter.

Step 4: Install Charging Infrastructure

Reliable charging is the backbone of any EV fleet. For a vocational fleet returning to depot daily, depot-based overnight charging is typical. Determine the number of chargers needed—Frankfurt likely installed multiple 150 kW DC fast chargers to handle its growing fleet. Consider a mix of AC chargers for overnight topping and DC for quick turnaround between shifts. Work with a certified installer to handle grid upgrades, transformer installations, and load management software. Also plan for redundancy and future scalability; Frankfurt’s expansion from 24 to 34 trucks shows the importance of scalable infrastructure.

Step 5: Secure Funding and Budget Approval

Electric vocational trucks have higher upfront costs but lower operational expenses. Develop a total cost of ownership (TCO) model that includes vehicle purchase, upfitting, charging infrastructure, electricity, maintenance savings, and potential revenue from grid services. Present this to decision-makers alongside available government incentives. In Germany, programs like the “Klimafreundliche Nutzfahrzeuge” (KFN) and EU Green Deal funds can offset up to 80% of the cost difference. Frankfurt likely leveraged such grants. Also consider internal savings from reduced fuel and maintenance costs over the vehicle’s lifespan.

Step 6: Train Drivers and Maintenance Teams

Transitioning to EVs requires new driving techniques (e.g., regenerative braking, range management) and maintenance procedures (high-voltage safety, software updates). Develop a comprehensive training program. For drivers: cover EV operation, eco-driving tips, emergency procedures, and charging etiquette. For technicians: provide hands-on training with the specific EV model and upfitted equipment, including diagnostic tools and battery health monitoring. Frankfurt’s fleet managers likely coordinated with Mercedes-Benz for certified training. Record all training and update it as vehicles receive over-the-air software upgrades.

Step 7: Deploy and Monitor Performance

Start with a pilot of 1-2 trucks to iron out issues before scaling to 10 or more. Monitor key metrics: range utilization, charging times, energy consumption per route, downtime, and driver feedback. Use telematics to compare the eEconic’s performance against previous diesel trucks. Frankfurt’s data from its initial 24 trucks would have informed the decision to add 10 more. Set benchmarks for reliability and sustainability, and adjust charging schedules or routes as needed. Regularly report progress to stakeholders to maintain support.

Step 8: Scale and Optimize

With a successful pilot, expand the fleet in phases. Each new batch of EVs should benefit from lessons learned. Revisit your feasibility assumptions as battery technology improves and new models become available. For example, if longer-range eEconics are released, you might convert longer routes. Also consider integrating bidirectional charging (V2G) to manage grid demand and generate revenue. Frankfurt’s journey to 34 trucks shows that scaling is not just about adding vehicles but also about optimizing infrastructure, maintenance workflows, and route planning to maximize the EV fleet’s benefits.

Tips & Best Practices

Start with a small pilot – It reduces risk and builds institutional knowledge before making large capital commitments.
Partner with experienced suppliers – Choose OEMs and upfitters who have proven EV vocational solutions, like Mercedes-Benz for low-floor trucks.
Consider total cost of ownership, not just purchase price – EVs often offer lower fuel, maintenance, and compliance costs over 8-10 years.
Plan for grid capacity early – Utility upgrade timelines can be long; request load studies and transformer upgrades in advance.
Engage drivers as champions – Involve them in the process; their feedback on vehicle ergonomics and charging can improve adoption.
Document everything – From upfit specifications to charging logs, good data supports future decisions and grant reporting.
Look for future-proof charging infrastructure – Install chargers that support bidirectional power flow and higher power levels to accommodate larger batteries.
Leverage public motivation – Announce milestones like Frankfurt’s to build public support for your city’s sustainability goals.

By following these steps, any municipality or commercial fleet can replicate Frankfurt’s success and accelerate the transition to a cleaner, more efficient vocational fleet.